Religion
level2
topic"Philosophy and religion"
section"Philosophy and religion"
Ramesses II
level3
topic"People"
section"Leaders and politicians"
Roald Amundsen
level3
topic"People"
section"Explorers"
Rembrandt
level3
topic"People"
section"Artists"
René Descartes
level3
topic"People"
section"Philosophers and social scientists"
Rumi
level3
topic"People"
section"Writers"
Rabindranath Tagore
level3
topic"People"
section"Writers"
Renaissance
level3
topic"History"
section"Modern history"
Reformation
level3
topic"History"
section"Modern history"
Rocky Mountains
level3
topic"Geography"
section"Terrestrial features"
River
level3
topic"Physical sciences"
section"Hydrological features"
Russia
level3
topic"Geography"
section"Countries"
Rome
level3
topic"Geography"
section"Cities"
Realism (arts)
level3
topic"Arts"
section"Artistic movements"
Romanticism
level3
topic"Arts"
section"Artistic movements"
Rock music
level3
topic"Arts"
section"Music"
Reason
level3
topic"Philosophy and religion"
section"Philosophical branches and concepts"
Ritual
level3
topic"Philosophy and religion"
section"Religion"
Rice
level3
topic"Biology and health sciences"
section"Food and drink"
Retail
level3
topic"Society and social sciences"
section"Business and economics"
Racism
level3
topic"Society and social sciences"
section"Social issues"
Russian language
level3
topic"Society and social sciences"
section"Language"
Radioactive decay
level3
topic"Physical sciences"
section"Physics"
Rodent
level3
topic"Biology and health sciences"
section"Biology"
Reptile
level3
topic"Biology and health sciences"
section"Biology"
Reproduction
level3
topic"Biology and health sciences"
section"Biology"
RNA
level3
topic"Biology and health sciences"
section"Chemistry"
Redox
level3
topic"Physical sciences"
section"Chemistry"
Rain
level3
topic"Physical sciences"
section"Earth science"
Rock (geology)
level3
topic"Physical sciences"
section"Earth science"
Renewable energy
level3
topic"Technology"
section"Energy"
Refrigeration
level3
topic"Technology"
section"Food and health"
Robotics
level3
topic"Technology"
section"Tools and machinery"
Radio
level3
topic"Technology"
section"Media and communication"
Rocket
level3
topic"Technology"
section"Space"
Road
level3
topic"Technology"
section"Transportation"
Radar
level3
topic"Technology"
section"Navigation and timekeeping"
Real number
level3
topic"Mathematics"
section"Counting and numbers"
Renaissance architecture
level4
topic"Arts"
section"Styles"
Romanesque architecture
level4
topic"Arts"
section"Styles"
Rijksmuseum
level4
topic"Arts"
section"Europe"
Romance novel
level4
topic"Arts"
section"Basics"
Rhyme
level4
topic"Arts"
section"Basics"
Russian literature
level4
topic"Arts"
section"Literatures by language and area"
Romance of the Three Kingdoms
level4
topic"Arts"
section"Fiction of antiquity"
Robinson Crusoe
level4
topic"Arts"
section"Fiction of early printed book era"
Romeo and Juliet
level4
topic"Arts"
section"Fiction of early printed book era"
Republic (Plato)
level4
topic"Arts"
section"Nonfiction of antiquity"
Rubaiyat of Omar Khayyam
level4
topic"Arts"
section"Poetic works of early printed book era"
Rhythm
level4
topic"Arts"
section"Basics_2"
Recorder (musical instrument)
level4
topic"Arts"
section"Musical instruments"
Renaissance music
level4
topic"Arts"
section"Western classical music"
Romantic music
level4
topic"Arts"
section"Western classical music"
Rapping
level4
topic"Arts"
section"Popular music"
Ragtime
level4
topic"Arts"
section"Popular music"
Reggae
level4
topic"Arts"
section"Popular music"
Rhythm and blues
level4
topic"Arts"
section"Popular music"
Rock and roll
level4
topic"Arts"
section"Popular music"
Rhapsody in Blue
level4
topic"Arts"
section"Modern"
Rock art
level4
topic"Arts"
section"Pre-modern art"
Renaissance art
level4
topic"Arts"
section"Pre-modern art"
Rococo
level4
topic"Arts"
section"Pre-modern art"
Roman art
level4
topic"Arts"
section"Pre-modern art"
Romanesque art
level4
topic"Arts"
section"Pre-modern art"
Religious art
level4
topic"Arts"
section"Concepts and forms"
Robin Hood
level4
topic"Arts"
section"Western folklore"
Red blood cell
level4
topic"Biology and health sciences"
section"Circulatory system"
Reproductive system
level4
topic"Biology and health sciences"
section"Reproductive system"
Respiratory system
level4
topic"Biology and health sciences"
section"Respiratory system"
Root
level4
topic"Biology and health sciences"
section"Plant: General"
Respiration (physiology)
level4
topic"Biology and health sciences"
section"Basics_3"
Ribosome
level4
topic"Biology and health sciences"
section"Organelles"
Remora
level4
topic"Biology and health sciences"
section"Perciformes"
Rattlesnake
level4
topic"Biology and health sciences"
section"Reptiles"
Red-eared slider
level4
topic"Biology and health sciences"
section"Reptiles"
Rock dove
level4
topic"Biology and health sciences"
section"Columbiformes"
River kingfisher
level4
topic"Biology and health sciences"
section"Coraciiformes"
Rail (bird)
level4
topic"Biology and health sciences"
section"Gruiformes"
Rhea (bird)
level4
topic"Biology and health sciences"
section"Ratites"
Resplendent quetzal
level4
topic"Biology and health sciences"
section"Trogoniformes"
Ruminant
level4
topic"Biology and health sciences"
section"Artiodactyla"
Red deer
level4
topic"Biology and health sciences"
section"Artiodactyla"
Reindeer
level4
topic"Biology and health sciences"
section"Artiodactyla"
Rabbit
level4
topic"Biology and health sciences"
section"Lagomorphs"
Rhinoceros
level4
topic"Biology and health sciences"
section"Perissodactyla"
Rhesus macaque
level4
topic"Biology and health sciences"
section"Primates"
Rat
level4
topic"Biology and health sciences"
section"Rodents"
Rhododendron
level4
topic"Biology and health sciences"
section"Ericales"
Rubiaceae
level4
topic"Biology and health sciences"
section"Gentianales"
Rosaceae
level4
topic"Biology and health sciences"
section"Rosales"
Rose
level4
topic"Biology and health sciences"
section"Rosales"
Raspberry
level4
topic"Biology and health sciences"
section"Culinary fruits"
Rye
level4
topic"Biology and health sciences"
section"Grains"
Rapeseed
level4
topic"Biology and health sciences"
section"Leafy vegetables"
Radish
level4
topic"Biology and health sciences"
section"Root vegetables"
Rutabaga
level4
topic"Biology and health sciences"
section"Root vegetables"
Rhizaria
level4
topic"Biology and health sciences"
section"Other organisms"
Red algae
level4
topic"Biology and health sciences"
section"Other organisms"
Root canal
level4
topic"Biology and health sciences"
section"Dentistry"
Radiology
level4
topic"Biology and health sciences"
section"Fields of medicine"
Reflex
level4
topic"Biology and health sciences"
section"Medical procedures"
Radiation therapy
level4
topic"Biology and health sciences"
section"Medical procedures"
Respiratory failure
level4
topic"Biology and health sciences"
section"Injury"
Rabies
level4
topic"Biology and health sciences"
section"Infectious disease"
Restaurant
level4
topic"Everyday life"
section"Preparation and serving"
Rum
level4
topic"Everyday life"
section"Alcoholic drinks"
Romance (love)
level4
topic"Everyday life"
section"Marriage and parenting"
Riddle
level4
topic"Everyday life"
section"Entertainment and leisure"
Rubik's Cube
level4
topic"Everyday life"
section"Entertainment and leisure"
Recreation
level4
topic"Everyday life"
section"Recreation and tourism"
Roulette
level4
topic"Everyday life"
section"Games"
Rugby football
level4
topic"Everyday life"
section"Team sports"
Rugby league
level4
topic"Everyday life"
section"Team sports"
Rugby sevens
level4
topic"Everyday life"
section"Team sports"
Rugby union
level4
topic"Everyday life"
section"Team sports"
Rugby World Cup
level4
topic"Everyday life"
section"Team sports"
Running
level4
topic"Everyday life"
section"Athletics"
Roller skating
level4
topic"Everyday life"
section"Skating"
Rowing (sport)
level4
topic"Everyday life"
section"Water sports"
Rock climbing
level4
topic"Everyday life"
section"Other individual sports"
Rodeo
level4
topic"Everyday life"
section"Other individual sports"
Remote sensing
level4
topic"Geography"
section"Cartography"
Red Sea
level4
topic"Geography"
section"Oceans and seas"
Ross Sea
level4
topic"Geography"
section"Oceans and seas"
Rio Grande
level4
topic"Geography"
section"North America_2"
Rio Negro (Amazon)
level4
topic"Geography"
section"South America_2"
Río de la Plata
level4
topic"Geography"
section"South America_2"
Rhine
level4
topic"Geography"
section"Europe_2"
River Thames
level4
topic"Geography"
section"Europe_2"
Réunion
level4
topic"Geography"
section"Africa_3"
Ryukyu Islands
level4
topic"Geography"
section"Asia_3"
Ring of Fire
level4
topic"Geography"
section"Land relief: General"
Royal National Park
level4
topic"Geography"
section"Oceania_6"
Republic of the Congo
level4
topic"Geography"
section"Central Africa"
Rwanda
level4
topic"Geography"
section"East Africa"
Republic of Ireland
level4
topic"Geography"
section"Northern Europe"
Romania
level4
topic"Geography"
section"Eastern Europe"
Rajasthan
level4
topic"Geography"
section"India"
Rural area
level4
topic"Geography"
section"Urban studies and planning"
Rabat
level4
topic"Geography"
section"Morocco"
Ranchi
level4
topic"Geography"
section"East India"
Raipur
level4
topic"Geography"
section"Central India"
Rawalpindi
level4
topic"Geography"
section"Pakistan_2"
Riyadh
level4
topic"Geography"
section"Saudi Arabia"
Riga
level4
topic"Geography"
section"Latvia"
Rostov-on-Don
level4
topic"Geography"
section"Russia_2"
Rotterdam
level4
topic"Geography"
section"Netherlands"
Recife
level4
topic"Geography"
section"Brazil"
Rio de Janeiro
level4
topic"Geography"
section"Brazil"
Rosario
level4
topic"Geography"
section"Argentina"
Roman–Persian Wars
level4
topic"History"
section"Central Asia, Iran, Caucasus"
Roman Kingdom
level4
topic"History"
section"Europe_2"
Roman Republic
level4
topic"History"
section"Europe_2"
Roman Empire
level4
topic"History"
section"Europe_2"
Rurikids
level4
topic"History"
section"Eastern Europe and Central"
Reconquista
level4
topic"History"
section"Spain"
Republic of Genoa
level4
topic"History"
section"Italy"
Republic of Venice
level4
topic"History"
section"Italy"
Russo-Japanese War
level4
topic"History"
section"East Asia_4"
Revolutions of 1848
level4
topic"History"
section"Basics_4"
Russian Revolution of 1905
level4
topic"History"
section"Eastern Europe"
Revolutions of 1989
level4
topic"History"
section"Eastern Europe"
Russian Civil War
level4
topic"History"
section"Eastern Europe"
Russian Empire
level4
topic"History"
section"Eastern Europe"
Russian Revolution
level4
topic"History"
section"Eastern Europe"
Russo-Turkish War (1877–1878)
level4
topic"History"
section"Eastern Europe"
Rwandan genocide
level4
topic"History"
section"Africa_5"
Radiocarbon dating
level4
topic"History"
section"Auxiliary historical sciences"
Rational number
level4
topic"Mathematics"
section"Basics"
Roman numerals
level4
topic"Mathematics"
section"Basics"
Right angle
level4
topic"Mathematics"
section"Geometry"
Riemannian geometry
level4
topic"Mathematics"
section"Geometry"
Representation theory
level4
topic"Mathematics"
section"Algebra"
Ring theory
level4
topic"Mathematics"
section"Algebra"
Ring (mathematics)
level4
topic"Mathematics"
section"Algebra"
Regression analysis
level4
topic"Mathematics"
section"Statistics and probability"
Randomized controlled trial
level4
topic"Mathematics"
section"Statistics and probability"
Random variable
level4
topic"Mathematics"
section"Statistics and probability"
Russell's paradox
level4
topic"Mathematics"
section"Discrete mathematics"
Riemann surface
level4
topic"Mathematics"
section"Calculus and analysis"
Real analysis
level4
topic"Mathematics"
section"Calculus and analysis"
Riemann hypothesis
level4
topic"Mathematics"
section"Other"
Robert De Niro
level4
topic"People"
section"Actors"
Rita Hayworth
level4
topic"People"
section"Actors"
Rajinikanth
level4
topic"People"
section"Actors"
Rudolph Valentino
level4
topic"People"
section"Actors"
Rudolf Nureyev
level4
topic"People"
section"Ballet"
Richard Pryor
level4
topic"People"
section"Comedians"
Raphael
level4
topic"People"
section"Renaissance to early modern"
René Magritte
level4
topic"People"
section"Modern (painters)"
Raymond Loewy
level4
topic"People"
section"Designers"
Robert Moses
level4
topic"People"
section"Urban planners"
Rudaki
level4
topic"People"
section"Asia_2"
Robert Burns
level4
topic"People"
section"Europe_3"
Ray Bradbury
level4
topic"People"
section"US and Canada"
Raymond Chandler
level4
topic"People"
section"US and Canada"
Ralph Waldo Emerson
level4
topic"People"
section"US and Canada"
Robert Frost
level4
topic"People"
section"US and Canada"
Robert A. Heinlein
level4
topic"People"
section"US and Canada"
Rainer Maria Rilke
level4
topic"People"
section"Western Europe"
Roald Dahl
level4
topic"People"
section"UK and Ireland"
Rudyard Kipling
level4
topic"People"
section"UK and Ireland"
Robert Louis Stevenson
level4
topic"People"
section"UK and Ireland"
Ryūnosuke Akutagawa
level4
topic"People"
section"Asia_4"
Rupert Murdoch
level4
topic"People"
section"Journalists"
Robert Schumann
level4
topic"People"
section"Romantic"
Richard Strauss
level4
topic"People"
section"Romantic"
Richard Wagner
level4
topic"People"
section"Romantic"
Ralph Vaughan Williams
level4
topic"People"
section"20th century modern"
Ravi Shankar
level4
topic"People"
section"Hindustani classical"
Ray Charles
level4
topic"People"
section"Blues, R&B, and soul"
Robert Johnson
level4
topic"People"
section"Blues, R&B, and soul"
Run-DMC
level4
topic"People"
section"Hip-hop and rap"
Rodgers and Hammerstein
level4
topic"People"
section"Musical comedy and lyricists"
Robert Bresson
level4
topic"People"
section"Directors"
Raj Kapoor
level4
topic"People"
section"Directors"
Roman Polanski
level4
topic"People"
section"Directors"
Rothschild family
level4
topic"People"
section"Businesspeople"
Robert Falcon Scott
level4
topic"People"
section"Modern_2"
Raymond Cattell
level4
topic"People"
section"Psychologists"
Ramanuja
level4
topic"People"
section"Post-classical_7"
Ramakrishna
level4
topic"People"
section"Modern_6"
Ramana Maharshi
level4
topic"People"
section"Modern_6"
Rabbi Akiva
level4
topic"People"
section"Judaism"
Rashi
level4
topic"People"
section"Judaism"
Ramesses III
level4
topic"People"
section"Egypt"
Ramkhamhaeng
level4
topic"People"
section"Southeastern Asia"
Rajaraja I
level4
topic"People"
section"Southern Asia_2"
Richard I of England
level4
topic"People"
section"England and Scotland"
Robert the Bruce
level4
topic"People"
section"England and Scotland"
Robert Guiscard
level4
topic"People"
section"Italy"
Roger II of Sicily
level4
topic"People"
section"Italy"
Robert Clive
level4
topic"People"
section"Southern Asia_3"
Rama I
level4
topic"People"
section"Southeastern Asia_2"
Roxelana
level4
topic"People"
section"Western Asia_3"
Robert Walpole
level4
topic"People"
section"England and Scotland_2"
Rainilaiarivony
level4
topic"People"
section"Eastern Africa"
Robert Mugabe
level4
topic"People"
section"Southern and Central Africa"
Rafael Trujillo
level4
topic"People"
section"Central America and the Caribbean"
Richard Nixon
level4
topic"People"
section"United States_2"
Ronald Reagan
level4
topic"People"
section"United States_2"
Ruhollah Khomeini
level4
topic"People"
section"Central Asia, Iran, Caucasus_3"
Robert Peel
level4
topic"People"
section"United Kingdom"
Robert Baden-Powell, 1st Baron Baden-Powell
level4
topic"People"
section"Modern_8"
Robert E. Lee
level4
topic"People"
section"Modern_8"
Rosa Parks
level4
topic"People"
section"United States_3"
Rani of Jhansi
level4
topic"People"
section"Asia_9"
Rosa Luxemburg
level4
topic"People"
section"Europe_9"
Robert Hooke
level4
topic"People"
section"Early modern_9"
Richard Feynman
level4
topic"People"
section"Modern_10"
Robert Andrews Millikan
level4
topic"People"
section"Modern_10"
Robert Boyle
level4
topic"People"
section"Chemistry"
Robert Burns Woodward
level4
topic"People"
section"Chemistry"
Rachel Carson
level4
topic"People"
section"Biology"
Rosalind Franklin
level4
topic"People"
section"Biology"
Robert Koch
level4
topic"People"
section"Medicine"
Rudolf Diesel
level4
topic"People"
section"Inventors and engineers"
Robert Fulton
level4
topic"People"
section"Inventors and engineers"
Robert H. Goddard
level4
topic"People"
section"Inventors and engineers"
Ronald Fisher
level4
topic"People"
section"Modern_11"
Roger Federer
level4
topic"People"
section"Tennis"
Rod Laver
level4
topic"People"
section"Tennis"
Rafael Nadal
level4
topic"People"
section"Tennis"
Ronaldo (Brazilian footballer)
level4
topic"People"
section"Association football"
Renaissance philosophy
level4
topic"Philosophy and religion"
section"Philosophy by region and period"
Relativism
level4
topic"Philosophy and religion"
section"Approaches"
Rationalism
level4
topic"Philosophy and religion"
section"Approaches_2"
Reality
level4
topic"Philosophy and religion"
section"Concepts_3"
Reductionism
level4
topic"Philosophy and religion"
section"Philosophy of science"
Relic
level4
topic"Philosophy and religion"
section"Practices"
Religious conversion
level4
topic"Philosophy and religion"
section"Practices"
Religious experience
level4
topic"Philosophy and religion"
section"Beliefs"
Reincarnation
level4
topic"Philosophy and religion"
section"Afterlife"
Resurrection
level4
topic"Philosophy and religion"
section"Afterlife"
Rastafari
level4
topic"Philosophy and religion"
section"Main branches"
Rabbi
level4
topic"Philosophy and religion"
section"Judaism"
Reform Judaism
level4
topic"Philosophy and religion"
section"Judaism"
Russian Orthodox Church
level4
topic"Philosophy and religion"
section"Branches"
Reformed Christianity
level4
topic"Philosophy and religion"
section"Branches"
Ramayana
level4
topic"Philosophy and religion"
section"Hinduism"
Religion in ancient Rome
level4
topic"Philosophy and religion"
section"Ancient religions"
Religion in pre-Islamic Arabia
level4
topic"Philosophy and religion"
section"Ancient religions"
Roman mythology
level4
topic"Philosophy and religion"
section"By culture"
Ra
level4
topic"Philosophy and religion"
section"Egyptian mythology"
Rama
level4
topic"Philosophy and religion"
section"Hindu mythology"
Research
level4
topic"Physical sciences"
section"Basics"
Radian
level4
topic"Physical sciences"
section"Angle"
Rigel
level4
topic"Physical sciences"
section"Notable stars"
Ring Nebula
level4
topic"Physical sciences"
section"Notable nebulae"
Radio galaxy
level4
topic"Physical sciences"
section"Active galactic nucleus"
Redshift
level4
topic"Physical sciences"
section"Physical cosmology"
Ring system
level4
topic"Physical sciences"
section"Planetary science"
Red giant
level4
topic"Physical sciences"
section"Stellar astronomy"
Radical (chemistry)
level4
topic"Physical sciences"
section"Chemical reactions"
Reaction mechanism
level4
topic"Physical sciences"
section"Chemical reactions"
Rubidium
level4
topic"Physical sciences"
section"Chemical elements_2"
Ruthenium
level4
topic"Physical sciences"
section"Chemical elements_2"
Rhodium
level4
topic"Physical sciences"
section"Chemical elements_2"
Rhenium
level4
topic"Physical sciences"
section"Chemical elements_2"
Radon
level4
topic"Physical sciences"
section"Chemical elements_2"
Radium
level4
topic"Physical sciences"
section"Chemical elements_2"
Ruby
level4
topic"Physical sciences"
section"Mineral gemstones"
Rapids
level4
topic"Physical sciences"
section"Fluvial landforms"
Rainforest
level4
topic"Physical sciences"
section"Forests"
Rainbow
level4
topic"Physical sciences"
section"Atmospheric optics"
River delta
level4
topic"Physical sciences"
section"Hydrology"
Radiation
level4
topic"Physical sciences"
section"Basics_6"
Rutherford scattering experiments
level4
topic"Physical sciences"
section"Atomic physics"
Reflection (physics)
level4
topic"Physical sciences"
section"Optics"
Refraction
level4
topic"Physical sciences"
section"Optics"
Refractive index
level4
topic"Physical sciences"
section"Optics"
RGB color model
level4
topic"Physical sciences"
section"Basics_7"
Red
level4
topic"Physical sciences"
section"Color terms"
Radio wave
level4
topic"Physical sciences"
section"Electrodynamics"
Relativistic mechanics
level4
topic"Physical sciences"
section"Basics_10"
Rotation
level4
topic"Physical sciences"
section"Classical mechanics"
Reynolds number
level4
topic"Physical sciences"
section"Fluid mechanics"
Resonance
level4
topic"Physical sciences"
section"Waves"
Real estate
level4
topic"Society and social sciences"
section"Business and economics: General"
Renminbi
level4
topic"Society and social sciences"
section"Specific currencies"
Retirement
level4
topic"Society and social sciences"
section"Employment"
Rosh Hashanah
level4
topic"Society and social sciences"
section"Festivals, holidays, and observances"
Ramadan
level4
topic"Society and social sciences"
section"Festivals, holidays, and observances"
Romani people
level4
topic"Society and social sciences"
section"Ethnic groups"
Reading
level4
topic"Society and social sciences"
section"Basics_2"
Rhetoric
level4
topic"Society and social sciences"
section"Basics_2"
Romance languages
level4
topic"Society and social sciences"
section"Language families"
Rosetta Stone
level4
topic"Society and social sciences"
section"Alphabets and writing systems"
Rune
level4
topic"Society and social sciences"
section"Alphabets and writing systems"
Romanian language
level4
topic"Society and social sciences"
section"Romance languages"
Rights
level4
topic"Society and social sciences"
section"Basics_3"
Robbery
level4
topic"Society and social sciences"
section"Crime"
Rape
level4
topic"Society and social sciences"
section"Crime"
Rule of law
level4
topic"Society and social sciences"
section"Institutions and professions"
Religious law
level4
topic"Society and social sciences"
section"Subjects"
Reality television
level4
topic"Society and social sciences"
section"Television"
Referendum
level4
topic"Society and social sciences"
section"Politics"
Revolution
level4
topic"Society and social sciences"
section"Politics"
Riot
level4
topic"Society and social sciences"
section"Politics"
Republic
level4
topic"Society and social sciences"
section"Forms of government"
Respect
level4
topic"Society and social sciences"
section"Interpersonal relations"
Remorse
level4
topic"Society and social sciences"
section"Emotions and traits"
Race (human categorization)
level4
topic"Society and social sciences"
section"Social status"
Refugee
level4
topic"Society and social sciences"
section"Basics_6"
Religious war
level4
topic"Society and social sciences"
section"Wars by type"
Random-access memory
level4
topic"Technology"
section"Data storage"
Read-only memory
level4
topic"Technology"
section"Data storage"
Router (computing)
level4
topic"Technology"
section"Networks"
Remote control
level4
topic"Technology"
section"Basics_4"
Resistor
level4
topic"Technology"
section"Components"
Relay
level4
topic"Technology"
section"Components"
Recycling
level4
topic"Technology"
section"Basics_6"
Rolling (metalworking)
level4
topic"Technology"
section"Metallurgy"
Roof
level4
topic"Technology"
section"Architectural elements"
Room
level4
topic"Technology"
section"Architectural elements"
Reservoir
level4
topic"Technology"
section"Hydraulic infrastructure"
Robot
level4
topic"Technology"
section"Basics_8"
Rope
level4
topic"Technology"
section"Components_2"
Rivet
level4
topic"Technology"
section"Components_2"
Ruler
level4
topic"Technology"
section"Measuring instruments"
Rake (tool)
level4
topic"Technology"
section"Agricultural tools"
Refrigerator
level4
topic"Technology"
section"Household appliances"
Radio broadcasting
level4
topic"Technology"
section"Media and communication"
Radiography
level4
topic"Technology"
section"Imaging"
Rapier
level4
topic"Technology"
section"Melee weapons"
Rifle
level4
topic"Technology"
section"Projectile weapons"
Radio telescope
level4
topic"Technology"
section"Optical instruments"
Rocket engine
level4
topic"Technology"
section"Basics_10"
Roscosmos
level4
topic"Technology"
section"Programs and launch sites"
Road transport
level4
topic"Technology"
section"Road transport"
Rickshaw
level4
topic"Technology"
section"Road transport"
Rail transport
level4
topic"Technology"
section"Trains"
Railway track
level4
topic"Technology"
section"Trains"
Rapid transit
level4
topic"Technology"
section"Trains"
Riverboat
level4
topic"Technology"
section"Maritime transport"
Rock-cut architecture
level5
topic"Arts"
section"Prehistory and ancient history"
Renaissance Revival architecture
level5
topic"Arts"
section"Modern era"
Revivalism (architecture)
level5
topic"Arts"
section"Modern era"
Rock-Hewn Churches, Lalibela
level5
topic"Arts"
section"Africa"
Rockefeller Center
level5
topic"Arts"
section"Americas"
Red Fort
level5
topic"Arts"
section"Asia"
Registan
level5
topic"Arts"
section"Asia"
Roman Forum
level5
topic"Arts"
section"Europe"
Red Square
level5
topic"Arts"
section"Europe"
Royal Observatory, Greenwich
level5
topic"Arts"
section"Europe"
Reichstag building
level5
topic"Arts"
section"Europe"
Rock and Roll Hall of Fame
level5
topic"Arts"
section"United States"
Royal Alberta Museum
level5
topic"Arts"
section"Canada"
Royal Ontario Museum
level5
topic"Arts"
section"Canada"
Royal Tyrrell Museum of Palaeontology
level5
topic"Arts"
section"Canada"
Russian Museum
level5
topic"Arts"
section"Russia"
Roman à clef
level5
topic"Arts"
section"Fiction"
Reference work
level5
topic"Arts"
section"Reference works"
Romanian literature
level5
topic"Arts"
section"Literatures by religion, language and area"
Renaissance literature
level5
topic"Arts"
section"History of world literature"
Rhetoric (Aristotle)
level5
topic"Arts"
section"Nonfiction of antiquity"
Revelations of Divine Love
level5
topic"Arts"
section"Nonfiction of the medieval era"
Robert's Rules of Order
level5
topic"Arts"
section"General nonfiction"
Revised Version
level5
topic"Arts"
section"Bible translations"
Richard II (play)
level5
topic"Arts"
section"Shakespeare"
Richard III (play)
level5
topic"Arts"
section"Shakespeare"
Rabbit, Run
level5
topic"Arts"
section"Literary fiction"
Red Sorghum (novel)
level5
topic"Arts"
section"Literary fiction"
Rickshaw Boy
level5
topic"Arts"
section"Literary fiction"
Roots: The Saga of an American Family
level5
topic"Arts"
section"Historical fiction"
Rebecca (novel)
level5
topic"Arts"
section"Horror and gothic fiction"
Ranma ½
level5
topic"Arts"
section"Manga"
Rurouni Kenshin
level5
topic"Arts"
section"Manga"
Roman de la Rose
level5
topic"Arts"
section"Poetic works of the medieval era"
Record label
level5
topic"Arts"
section"Basics_3"
Record producer
level5
topic"Arts"
section"Basics_3"
Record chart
level5
topic"Arts"
section"Basics_3"
Register (music)
level5
topic"Arts"
section"Music theory"
Religious music
level5
topic"Arts"
section"Religious music"
Requiem
level5
topic"Arts"
section"Basic forms"
Rhapsody (music)
level5
topic"Arts"
section"Basic forms"
Raï
level5
topic"Arts"
section"Popular music: General"
Reggaeton
level5
topic"Arts"
section"Popular music: General"
Raga
level5
topic"Arts"
section"Music of Asia"
Requiem (Mozart)
level5
topic"Arts"
section"Classical"
Radetzky March
level5
topic"Arts"
section"Romantic"
Requiem (Fauré)
level5
topic"Arts"
section"Romantic"
Requiem (Verdi)
level5
topic"Arts"
section"Romantic"
Romeo and Juliet (Tchaikovsky)
level5
topic"Arts"
section"Romantic"
Rhapsody on a Theme of Paganini
level5
topic"Arts"
section"20th century"
Rigoletto
level5
topic"Arts"
section"Opera"
Ride of the Valkyries
level5
topic"Arts"
section"Opera"
Romeo and Juliet (Prokofiev)
level5
topic"Arts"
section"Ballet"
Rent (musical)
level5
topic"Arts"
section"Musicals"
Rule, Britannia!
level5
topic"Arts"
section"Anthems and patriotic songs"
Respect (song)
level5
topic"Arts"
section"Blues, R&B and Soul"
Rapper's Delight
level5
topic"Arts"
section"Hip-hop and rap"
Ready to Die
level5
topic"Arts"
section"Hip-hop and rap"
Red (Taylor Swift album)
level5
topic"Arts"
section"Pop music"
Revolver (Beatles album)
level5
topic"Arts"
section"Rock_2"
Rock Around the Clock
level5
topic"Arts"
section"Rock_2"
Rumours (album)
level5
topic"Arts"
section"Rock_2"
Rehearsal
level5
topic"Arts"
section"Concepts"
Ringmaster (circus)
level5
topic"Arts"
section"Circus"
Russian ballet
level5
topic"Arts"
section"Ballet_2"
Rhumba
level5
topic"Arts"
section"Ballroom dance"
Rock musical
level5
topic"Arts"
section"Musical theatre"
Retro style
level5
topic"Arts"
section"Concepts and forms"
Relief
level5
topic"Arts"
section"Sculpture"
Rideau, Cruchon et Compotier
level5
topic"Arts"
section"Modern"
Rabbit (Koons)
level5
topic"Arts"
section"Sculpture_2"
Robert E. Lee Monument (Charlottesville, Virginia)
level5
topic"Arts"
section"Sculpture_2"
Raising the Flag on Iwo Jima
level5
topic"Arts"
section"Photographs"
Raising a Flag over the Reichstag
level5
topic"Arts"
section"Photographs"
Rhein II
level5
topic"Arts"
section"Photographs"
Ruby slippers
level5
topic"Arts"
section"Individual fashion designs"
Relativity (M. C. Escher)
level5
topic"Arts"
section"Other media"
Raster graphics
level5
topic"Arts"
section"Digital art"
Romantic comedy
level5
topic"Arts"
section"Film genres"
Raiders of the Lost Ark
level5
topic"Arts"
section"Action"
Roundhay Garden Scene
level5
topic"Arts"
section"Documentary"
Rashomon
level5
topic"Arts"
section"Epic and historical films"
Rear Window
level5
topic"Arts"
section"Horror and thriller"
Rosemary's Baby (film)
level5
topic"Arts"
section"Horror and thriller"
Return of the Jedi
level5
topic"Arts"
section"Science fiction and fantasy_2"
Raging Bull
level5
topic"Arts"
section"Sports"
Rocky
level5
topic"Arts"
section"Sports"
Ragnar Lodbrok
level5
topic"Arts"
section"Western folklore"
Ragdoll
level5
topic"Biology and health sciences"
sublist"Animals"
section"Cats"
Ragamuffin cat
level5
topic"Biology and health sciences"
sublist"Animals"
section"Cats"
Russian Blue
level5
topic"Biology and health sciences"
sublist"Animals"
section"Cats"
Rhode Island Red
level5
topic"Biology and health sciences"
sublist"Animals"
section"Chickens"
Retriever
level5
topic"Biology and health sciences"
sublist"Animals"
section"Dogs"
Rex rabbit
level5
topic"Biology and health sciences"
sublist"Animals"
section"Rabbits"
Rambouillet sheep
level5
topic"Biology and health sciences"
sublist"Animals"
section"Sheep"
Rin Tin Tin
level5
topic"Biology and health sciences"
sublist"Animals"
section"Individual animals"
Repenomamus
level5
topic"Biology and health sciences"
sublist"Animals"
section"Stem-mammals"
Red fox
level5
topic"Biology and health sciences"
sublist"Animals"
section"Canines"
Red wolf
level5
topic"Biology and health sciences"
sublist"Animals"
section"Canines"
Rusty-spotted cat
level5
topic"Biology and health sciences"
sublist"Animals"
section"Felines"
Raccoon
level5
topic"Biology and health sciences"
sublist"Animals"
section"Procyonidae"
Ringtail
level5
topic"Biology and health sciences"
sublist"Animals"
section"Procyonidae"
Red panda
level5
topic"Biology and health sciences"
sublist"Animals"
section"Other carnivora"
Remingtonocetidae
level5
topic"Biology and health sciences"
sublist"Animals"
section"Cetaceans"
Right whale
level5
topic"Biology and health sciences"
sublist"Animals"
section"Baleen whales"
Right whale dolphin
level5
topic"Biology and health sciences"
sublist"Animals"
section"Toothed whale"
Risso's dolphin
level5
topic"Biology and health sciences"
sublist"Animals"
section"Toothed whale"
River dolphin
level5
topic"Biology and health sciences"
sublist"Animals"
section"Toothed whale"
Roe deer
level5
topic"Biology and health sciences"
sublist"Animals"
section"Deer"
Reticulated giraffe
level5
topic"Biology and health sciences"
sublist"Animals"
section"Giraffidae"
Red river hog
level5
topic"Biology and health sciences"
sublist"Animals"
section"Pigs_2"
Red kangaroo
level5
topic"Biology and health sciences"
sublist"Animals"
section"Diprotodontia"
Rock-wallaby
level5
topic"Biology and health sciences"
sublist"Animals"
section"Diprotodontia"
Rhinocerotoidea
level5
topic"Biology and health sciences"
sublist"Animals"
section"Perissodactyla"
Ring-tailed lemur
level5
topic"Biology and health sciences"
sublist"Animals"
section"Strepsirrhini"
Ruffed lemur
level5
topic"Biology and health sciences"
sublist"Animals"
section"Strepsirrhini"
Red squirrel
level5
topic"Biology and health sciences"
sublist"Animals"
section"Rodents"
Rufous hummingbird
level5
topic"Biology and health sciences"
sublist"Animals"
section"Apodiformes"
Rynchops
level5
topic"Biology and health sciences"
sublist"Animals"
section"Charadriiformes"
Ruff (bird)
level5
topic"Biology and health sciences"
sublist"Animals"
section"Charadriiformes"
Roadrunner
level5
topic"Biology and health sciences"
sublist"Animals"
section"Cuculiformes and relatives"
Red junglefowl
level5
topic"Biology and health sciences"
sublist"Animals"
section"Galliformes"
Rook (bird)
level5
topic"Biology and health sciences"
sublist"Animals"
section"Corvoidea"
Red-billed quelea
level5
topic"Biology and health sciences"
sublist"Animals"
section"Passerida"
Rainbow lorikeet
level5
topic"Biology and health sciences"
sublist"Animals"
section"Psittaciformes"
Rosella
level5
topic"Biology and health sciences"
sublist"Animals"
section"Psittaciformes"
Rhynchocephalia
level5
topic"Biology and health sciences"
sublist"Animals"
section"Rhynchocephalia"
Red-bellied black snake
level5
topic"Biology and health sciences"
sublist"Animals"
section"Snakes"
Reticulated python
level5
topic"Biology and health sciences"
sublist"Animals"
section"Snakes"
Rhamphorhynchus
level5
topic"Biology and health sciences"
sublist"Animals"
section"Pterosaurs"
Rhynchosaur
level5
topic"Biology and health sciences"
sublist"Animals"
section"Other prehistoric reptiles"
Reptiliomorpha
level5
topic"Biology and health sciences"
sublist"Animals"
section"Reptiliomorphs"
Rana (genus)
level5
topic"Biology and health sciences"
sublist"Animals"
section"Frogs and toads"
Rough-skinned newt
level5
topic"Biology and health sciences"
sublist"Animals"
section"Salamanders and newts"
Rabbit fish
level5
topic"Biology and health sciences"
sublist"Animals"
section"Chimaeriformes"
Requiem shark
level5
topic"Biology and health sciences"
sublist"Animals"
section"Sharks"
River shark
level5
topic"Biology and health sciences"
sublist"Animals"
section"Sharks"
Ribbon eel
level5
topic"Biology and health sciences"
sublist"Animals"
section"Anguilliformes"
Ricefish
level5
topic"Biology and health sciences"
sublist"Animals"
section"Beloniformes"
Ribbonfish
level5
topic"Biology and health sciences"
sublist"Animals"
section"Lampriformes"
Rabbitfish
level5
topic"Biology and health sciences"
sublist"Animals"
section"Perciformes"
Red mullet
level5
topic"Biology and health sciences"
sublist"Animals"
section"Perciformes"
Reedfish
level5
topic"Biology and health sciences"
sublist"Animals"
section"Polypteriformes"
Red king crab
level5
topic"Biology and health sciences"
sublist"Animals"
section"Crabs and hermit crabs"
Ranina ranina
level5
topic"Biology and health sciences"
sublist"Animals"
section"Crabs and hermit crabs"
Reef lobster
level5
topic"Biology and health sciences"
sublist"Animals"
section"Crayfishes and lobsters"
Rhynchocinetidae
level5
topic"Biology and health sciences"
sublist"Animals"
section"Shrimps and prawns"
Ricinulei
level5
topic"Biology and health sciences"
sublist"Animals"
section"Arachnids"
Redback spider
level5
topic"Biology and health sciences"
sublist"Animals"
section"Spiders"
Rove beetle
level5
topic"Biology and health sciences"
sublist"Animals"
section"Beetles (Coleoptera)"
Ranatra
level5
topic"Biology and health sciences"
sublist"Animals"
section"Hemiptera (true bugs)"
Reduviidae
level5
topic"Biology and health sciences"
sublist"Animals"
section"Hemiptera (true bugs)"
Rhaphidophoridae
level5
topic"Biology and health sciences"
sublist"Animals"
section"Orthoptera"
Rudists
level5
topic"Biology and health sciences"
sublist"Animals"
section"Bivalvia"
Riftia
level5
topic"Biology and health sciences"
sublist"Animals"
section"Lophotrochozoa"
Rotifer
level5
topic"Biology and health sciences"
sublist"Animals"
section"Platyzoa"
Rectum
level5
topic"Biology and health sciences"
sublist"Biology"
section"Gastrointestinal tract"
Rod cell
level5
topic"Biology and health sciences"
sublist"Biology"
section"Nervous system"
Retina
level5
topic"Biology and health sciences"
sublist"Biology"
section"Nervous system"
Radius (bone)
level5
topic"Biology and health sciences"
sublist"Biology"
section"Skeletal system"
Rib cage
level5
topic"Biology and health sciences"
sublist"Biology"
section"Skeletal system"
Rib
level5
topic"Biology and health sciences"
sublist"Biology"
section"Skeletal system"
Rhizome
level5
topic"Biology and health sciences"
sublist"Biology"
section"Plant anatomy and morphology: General"
Radicle
level5
topic"Biology and health sciences"
sublist"Biology"
section"Plant anatomy and morphology: General"
Rhodopsin
level5
topic"Biology and health sciences"
sublist"Biology"
section"Biological pigments"
Ribose
level5
topic"Biology and health sciences"
sublist"Biology"
section"Carbohydrates"
Ribosomal RNA
level5
topic"Biology and health sciences"
sublist"Biology"
section"Nucleic acids"
RNA polymerase
level5
topic"Biology and health sciences"
sublist"Biology"
section"Molecular biology"
RNA splicing
level5
topic"Biology and health sciences"
sublist"Biology"
section"Molecular biology"
RNA interference
level5
topic"Biology and health sciences"
sublist"Biology"
section"Molecular biology"
Regulation of gene expression
level5
topic"Biology and health sciences"
sublist"Biology"
section"Molecular biology"
Reverse transcriptase
level5
topic"Biology and health sciences"
sublist"Biology"
section"Molecular biology"
Restriction enzyme
level5
topic"Biology and health sciences"
sublist"Biology"
section"Molecular biology"
Rapid eye movement sleep
level5
topic"Biology and health sciences"
sublist"Biology"
section"Ethology"
Receptor (biochemistry)
level5
topic"Biology and health sciences"
sublist"Biology"
section"Cell processes"
R/K selection theory
level5
topic"Biology and health sciences"
sublist"Biology"
section"Ecology"
Reverse genetics
level5
topic"Biology and health sciences"
sublist"Biology"
section"Genetics"
Reproductive isolation
level5
topic"Biology and health sciences"
sublist"Biology"
section"Basics_4"
Red Deer Cave people
level5
topic"Biology and health sciences"
sublist"Biology"
section"Homo"
Residential treatment center
level5
topic"Biology and health sciences"
sublist"Health"
section"Health facilities"
Respiratory sounds
level5
topic"Biology and health sciences"
sublist"Health"
section"Diagnostics"
Respiratory rate
level5
topic"Biology and health sciences"
sublist"Health"
section"Diagnostics"
Root canal treatment
level5
topic"Biology and health sciences"
sublist"Health"
section"Dental treatments"
Reduction (orthopedic surgery)
level5
topic"Biology and health sciences"
sublist"Health"
section"Surgery"
Reperfusion therapy
level5
topic"Biology and health sciences"
sublist"Health"
section"Therapy"
Rh blood group system
level5
topic"Biology and health sciences"
sublist"Health"
section"Human anatomy"
Rectus abdominis muscle
level5
topic"Biology and health sciences"
sublist"Health"
section"Human anatomy"
Ring finger
level5
topic"Biology and health sciences"
sublist"Health"
section"Human anatomy"
Reproductive medicine
level5
topic"Biology and health sciences"
sublist"Health"
section"Fields of medicine"
Rheumatology
level5
topic"Biology and health sciences"
sublist"Health"
section"Fields of medicine"
Route of administration
level5
topic"Biology and health sciences"
sublist"Health"
section"General concepts_2"
Ranitidine
level5
topic"Biology and health sciences"
sublist"Health"
section"Antihistamines"
Rabies vaccine
level5
topic"Biology and health sciences"
sublist"Health"
section"Vaccines"
Recreational drug use
level5
topic"Biology and health sciences"
sublist"Health"
section"Recreational drugs"
Rheumatoid arthritis
level5
topic"Biology and health sciences"
sublist"Health"
section"Disease"
Repetitive strain injury
level5
topic"Biology and health sciences"
sublist"Health"
section"Types"
Refractive error
level5
topic"Biology and health sciences"
sublist"Health"
section"Disabilities"
Respiratory tract infection
level5
topic"Biology and health sciences"
sublist"Health"
section"Concepts"
Reverse zoonosis
level5
topic"Biology and health sciences"
sublist"Health"
section"Concepts"
Rheumatic fever
level5
topic"Biology and health sciences"
sublist"Health"
section"Bacterial infections"
Rift Valley fever
level5
topic"Biology and health sciences"
sublist"Health"
section"Viral diseases"
Rinderpest
level5
topic"Biology and health sciences"
sublist"Health"
section"Viral diseases"
Rubella
level5
topic"Biology and health sciences"
sublist"Health"
section"Viral diseases"
Rash
level5
topic"Biology and health sciences"
sublist"Health"
section"Symptoms and signs"
Rhinorrhea
level5
topic"Biology and health sciences"
sublist"Health"
section"Symptoms and signs"
Rickets
level5
topic"Biology and health sciences"
sublist"Health"
section"Health and fitness: General"
Riboflavin
level5
topic"Biology and health sciences"
sublist"Health"
section"Vitamins"
Rhyniophyte
level5
topic"Biology and health sciences"
sublist"Plants"
section"Pteridophytes"
Rattan
level5
topic"Biology and health sciences"
sublist"Plants"
section"Arecales (inc. Palms)"
Roystonea
level5
topic"Biology and health sciences"
sublist"Plants"
section"Arecales (inc. Palms)"
Roystonea oleracea
level5
topic"Biology and health sciences"
sublist"Plants"
section"Arecales (inc. Palms)"
Roystonea regia
level5
topic"Biology and health sciences"
sublist"Plants"
section"Arecales (inc. Palms)"
Ravenala
level5
topic"Biology and health sciences"
sublist"Plants"
section"Zingiberales"
Rubia tinctorum
level5
topic"Biology and health sciences"
sublist"Plants"
section"Gentianales"
Rafflesia arnoldii
level5
topic"Biology and health sciences"
sublist"Plants"
section"Malpighiales"
Ranunculus
level5
topic"Biology and health sciences"
sublist"Plants"
section"Ranunculales"
Rosales
level5
topic"Biology and health sciences"
sublist"Plants"
section"Rosales"
Rowan
level5
topic"Biology and health sciences"
sublist"Plants"
section"Rosales"
Rutaceae
level5
topic"Biology and health sciences"
sublist"Plants"
section"Sapindales"
Ribes
level5
topic"Biology and health sciences"
sublist"Plants"
section"Saxifragales"
Red Delicious
level5
topic"Biology and health sciences"
sublist"Plants"
section"Pomes"
Rambutan
level5
topic"Biology and health sciences"
sublist"Plants"
section"Stone fruits"
Redcurrant
level5
topic"Biology and health sciences"
sublist"Plants"
section"Berries"
Rubus
level5
topic"Biology and health sciences"
sublist"Plants"
section"Berries"
Red banana
level5
topic"Biology and health sciences"
sublist"Plants"
section"Tropical and tropical-like fruit"
Rhubarb
level5
topic"Biology and health sciences"
sublist"Plants"
section"Plants with edible fruit-like structures"
Rapini
level5
topic"Biology and health sciences"
sublist"Plants"
section"Leafy vegetables"
Russet Burbank
level5
topic"Biology and health sciences"
sublist"Plants"
section"Root vegetables"
Rosemary
level5
topic"Biology and health sciences"
sublist"Plants"
section"Herbs and spices"
Rhizopus
level5
topic"Biology and health sciences"
sublist"Plants"
section"Basics"
Rhizobia
level5
topic"Biology and health sciences"
sublist"Plants"
section"Gram-negative bacteria"
Radiolaria
level5
topic"Biology and health sciences"
sublist"Plants"
section"Bikonts"
Renting
level5
topic"Everyday life"
section"Housing"
Raincoat
level5
topic"Everyday life"
section"Outerwear"
Ring (jewellery)
level5
topic"Everyday life"
section"Jewelry"
Rouge (cosmetics)
level5
topic"Everyday life"
section"Cosmetics"
Russian cuisine
level5
topic"Everyday life"
section"Cuisine"
Roasting
level5
topic"Everyday life"
section"Food preparation"
Rotisserie
level5
topic"Everyday life"
section"Food preparation"
Rapeseed oil
level5
topic"Everyday life"
section"Cooking oils"
Roti
level5
topic"Everyday life"
section"Grains-based products"
Rye bread
level5
topic"Everyday life"
section"Grains-based products"
Rice flour
level5
topic"Everyday life"
section"Grains-based products"
Rib eye steak
level5
topic"Everyday life"
section"Meat"
Roast chicken
level5
topic"Everyday life"
section"Meat"
Red meat
level5
topic"Everyday life"
section"Meat"
Roe
level5
topic"Everyday life"
section"Seafood"
Raw milk
level5
topic"Everyday life"
section"Dairy products"
Rice milk
level5
topic"Everyday life"
section"Dairy analogues"
Ranch dressing
level5
topic"Everyday life"
section"Specific"
Rendang
level5
topic"Everyday life"
section"Food types"
Raisin
level5
topic"Everyday life"
section"Food types"
Rice noodles
level5
topic"Everyday life"
section"Food types"
Rice vermicelli
level5
topic"Everyday life"
section"Food types"
Ramen
level5
topic"Everyday life"
section"Food types"
Ravioli
level5
topic"Everyday life"
section"Food types"
Rice ball
level5
topic"Everyday life"
section"Food types"
Rice cake
level5
topic"Everyday life"
section"Food types"
Risotto
level5
topic"Everyday life"
section"Food types"
Reuben sandwich
level5
topic"Everyday life"
section"Food types"
Raspberry juice
level5
topic"Everyday life"
section"Cold drinks"
Red Bull
level5
topic"Everyday life"
section"Cold drinks"
Ribena
level5
topic"Everyday life"
section"Cold drinks"
Root beer
level5
topic"Everyday life"
section"Cold drinks"
Rooibos
level5
topic"Everyday life"
section"Hot drinks"
Red wine
level5
topic"Everyday life"
section"Alcoholic drinks"
Rum and Coke
level5
topic"Everyday life"
section"Alcoholic drinks"
Recliner
level5
topic"Everyday life"
section"Furniture and interior design"
Rocking chair
level5
topic"Everyday life"
section"Furniture and interior design"
Red-light district
level5
topic"Everyday life"
section"Sexuality and gender"
Robot competition
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Entertainment and leisure"
Robot combat
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Entertainment and leisure"
Rafting
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Recreation and tourism"
Roundabout (play)
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Recreation and tourism"
Roller coaster
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Amusement parks"
Resort
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Tourism"
Road trip
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Tourism"
Rubber duck
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Toys"
Rail transport modelling
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Toys"
Rocking horse
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Toys"
Race game
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Types of games"
Role-playing game
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Types of games"
Rummikub
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Tabletop games"
Reversi
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Board games"
Risk (game)
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Board games"
Royal Game of Ur
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Board games"
Rummy
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Card games"
Role-playing video game
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"General video game topics"
Roguelike
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"General video game topics"
Racing game
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"General video game topics"
Real-time strategy
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"General video game topics"
Resident Evil
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Japanese products"
Roblox
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"US products"
Rogue (video game)
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"US products"
Russian roulette
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Gambling"
Red Rover
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Other games and plays"
Rock paper scissors
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Other games and plays"
Racing
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Basics"
Referee
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Basics"
Racket (sports equipment)
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Sports equipment"
Roller skates
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Sports equipment"
Ringball
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Team sports"
Ringette
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Team sports"
Rounders
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Team sports"
Rugby League World Cup
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Team sports"
Recreational fishing
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Animal sport"
Relay race
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Athletics"
Racewalking
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Athletics"
Radio-controlled car
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Motor racing"
Rallying
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Motor racing"
Rallycross
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Motor racing"
Roller derby
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Skating"
Roller hockey
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Skating"
Road bicycle racing
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Other individual sports"
Rings (gymnastics)
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Other individual sports"
Rhythmic gymnastics
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Other individual sports"
Racquetball
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Other individual sports"
Russian Premier League
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Association football"
Real Madrid CF
level5
topic"Everyday life"
sublist"Sports, games and recreation"
section"Association football_2"
Residential area
level5
topic"Geography"
sublist"Cities"
section"Urban studies and planning"
Rustenburg
level5
topic"Geography"
sublist"Cities"
section"South Africa"
Regina, Saskatchewan
level5
topic"Geography"
sublist"Cities"
section"Canada"
Rochester, New York
level5
topic"Geography"
sublist"Cities"
section"Northeast"
Richmond, Virginia
level5
topic"Geography"
sublist"Cities"
section"South"
Raleigh, North Carolina
level5
topic"Geography"
sublist"Cities"
section"South"
Reno, Nevada
level5
topic"Geography"
sublist"Cities"
section"West"
Reynosa
level5
topic"Geography"
sublist"Cities"
section"Mexico"
Roseau
level5
topic"Geography"
sublist"Cities"
section"Other_2"
Rawson, Chubut
level5
topic"Geography"
sublist"Cities"
section"Argentina"
Río Gallegos, Santa Cruz
level5
topic"Geography"
sublist"Cities"
section"Argentina"
Río Grande, Tierra del Fuego
level5
topic"Geography"
sublist"Cities"
section"Argentina"
Ribeirão Preto
level5
topic"Geography"
sublist"Cities"
section"Brazil"
Rio Branco, Acre
level5
topic"Geography"
sublist"Cities"
section"Brazil"
Rancagua
level5
topic"Geography"
sublist"Cities"
section"Chile"
Rizhao
level5
topic"Geography"
sublist"Cities"
section"East China"
Rason
level5
topic"Geography"
sublist"Cities"
section"North Korea"
Rajshahi
level5
topic"Geography"
sublist"Cities"
section"Bangladesh"
Rangpur, Bangladesh
level5
topic"Geography"
sublist"Cities"
section"Bangladesh"
Rohtak
level5
topic"Geography"
sublist"Cities"
section"North India"
Rampur, Uttar Pradesh
level5
topic"Geography"
sublist"Cities"
section"North India"
Rishikesh
level5
topic"Geography"
sublist"Cities"
section"North India"
Rajkot
level5
topic"Geography"
sublist"Cities"
section"West India"
Rajahmundry
level5
topic"Geography"
sublist"Cities"
section"South India"
Rourkela
level5
topic"Geography"
sublist"Cities"
section"East India"
Rajarhat
level5
topic"Geography"
sublist"Cities"
section"East India"
Rajpur Sonarpur
level5
topic"Geography"
sublist"Cities"
section"East India"
Rahim Yar Khan
level5
topic"Geography"
sublist"Cities"
section"Pakistan"
Rạch Giá
level5
topic"Geography"
sublist"Cities"
section"Vietnam"
Ramadi
level5
topic"Geography"
sublist"Cities"
section"Iraq"
Rasht
level5
topic"Geography"
sublist"Cities"
section"Iran"
Rishon LeZion
level5
topic"Geography"
sublist"Cities"
section"Israel"
Russeifa
level5
topic"Geography"
sublist"Cities"
section"Jordan"
Ramallah
level5
topic"Geography"
sublist"Cities"
section"Palestine"
Raqqa
level5
topic"Geography"
sublist"Cities"
section"Syria"
Ruse, Bulgaria
level5
topic"Geography"
sublist"Cities"
section"Bulgaria"
Rzeszów
level5
topic"Geography"
sublist"Cities"
section"Poland"
Ryazan
level5
topic"Geography"
sublist"Cities"
section"Central"
Rivne
level5
topic"Geography"
sublist"Cities"
section"Ukraine"
Reykjavík
level5
topic"Geography"
sublist"Cities"
section"Iceland"
Reims
level5
topic"Geography"
sublist"Cities"
section"France"
Rennes
level5
topic"Geography"
sublist"Cities"
section"France"
Rouen
level5
topic"Geography"
sublist"Cities"
section"France"
Rostock
level5
topic"Geography"
sublist"Cities"
section"Germany"
Reading, Berkshire
level5
topic"Geography"
sublist"Cities"
section"England"
Rhodes (city)
level5
topic"Geography"
sublist"Cities"
section"Greece"
Ravenna
level5
topic"Geography"
sublist"Cities"
section"Italy"
Reggio Calabria
level5
topic"Geography"
sublist"Cities"
section"Italy"
Reggio Emilia
level5
topic"Geography"
sublist"Cities"
section"Italy"
Rimini
level5
topic"Geography"
sublist"Cities"
section"Italy"
Region
level5
topic"Geography"
sublist"Countries"
section"General"
Regional geography
level5
topic"Geography"
sublist"Countries"
section"General"
Republic of Artsakh
level5
topic"Geography"
sublist"Countries"
section"Unrecognized or largely unrecognized states, and disputed regions"
Regions of Cameroon
level5
topic"Geography"
sublist"Countries"
section"Africa: General"
Red Sea Governorate
level5
topic"Geography"
sublist"Countries"
section"Egypt"
Regions of Ethiopia
level5
topic"Geography"
sublist"Countries"
section"Ethiopia"
Rivers State
level5
topic"Geography"
sublist"Countries"
section"Nigeria"
Ross Dependency
level5
topic"Geography"
sublist"Countries"
section"Antarctica"
Rajshahi Division
level5
topic"Geography"
sublist"Countries"
section"Bangladesh"
Rangpur Division
level5
topic"Geography"
sublist"Countries"
section"Bangladesh"
Riau
level5
topic"Geography"
sublist"Countries"
section"Indonesia"
Riau Islands
level5
topic"Geography"
sublist"Countries"
section"Indonesia"
Regions of Iran
level5
topic"Geography"
sublist"Countries"
section"Iran"
Razavi Khorasan province
level5
topic"Geography"
sublist"Countries"
section"Iran"
Rakhine State
level5
topic"Geography"
sublist"Countries"
section"Myanmar"
Ryanggang Province
level5
topic"Geography"
sublist"Countries"
section"North Korea"
Regions of the Philippines
level5
topic"Geography"
sublist"Countries"
section"Philippines"
Riyadh Province
level5
topic"Geography"
sublist"Countries"
section"Saudi Arabia"
Republika Srpska
level5
topic"Geography"
sublist"Countries"
section"Bosnia and Herzegovina"
Regions of the Czech Republic
level5
topic"Geography"
sublist"Countries"
section"Czech Republic"
Regions of France
level5
topic"Geography"
sublist"Countries"
section"France"
Rhône-Alpes
level5
topic"Geography"
sublist"Countries"
section"France"
Rhine-Ruhr metropolitan region
level5
topic"Geography"
sublist"Countries"
section"Germany"
Rhineland-Palatinate
level5
topic"Geography"
sublist"Countries"
section"Germany"
Regions of Italy
level5
topic"Geography"
sublist"Countries"
section"Italy"
Regions of Denmark
level5
topic"Geography"
sublist"Countries"
section"Nordic countries"
Regions of Finland
level5
topic"Geography"
sublist"Countries"
section"Nordic countries"
Regions of Iceland
level5
topic"Geography"
sublist"Countries"
section"Nordic countries"
Regions of Norway
level5
topic"Geography"
sublist"Countries"
section"Nordic countries"
Republic of Karelia
level5
topic"Geography"
sublist"Countries"
section"Russia"
Russian Far East
level5
topic"Geography"
sublist"Countries"
section"Russia"
Region of Murcia
level5
topic"Geography"
sublist"Countries"
section"Spain"
Rivne Oblast
level5
topic"Geography"
sublist"Countries"
section"Ukraine"
Rutland
level5
topic"Geography"
sublist"Countries"
section"United Kingdom"
Rust Belt
level5
topic"Geography"
sublist"Countries"
section"United States"
Rhode Island
level5
topic"Geography"
sublist"Countries"
section"United States"
Riverina
level5
topic"Geography"
sublist"Countries"
section"Australia"
Regions of Guyana
level5
topic"Geography"
sublist"Countries"
section"South America: General"
Regions of Peru
level5
topic"Geography"
sublist"Countries"
section"South America: General"
Río Negro Province
level5
topic"Geography"
sublist"Countries"
section"Argentina"
Rondônia
level5
topic"Geography"
sublist"Countries"
section"Brazil"
Roraima
level5
topic"Geography"
sublist"Countries"
section"Brazil"
Rio Grande do Norte
level5
topic"Geography"
sublist"Countries"
section"Brazil"
Rio de Janeiro (state)
level5
topic"Geography"
sublist"Countries"
section"Brazil"
Rio Grande do Sul
level5
topic"Geography"
sublist"Countries"
section"Brazil"
Regions of Chile
level5
topic"Geography"
sublist"Countries"
section"Chile"
Red River (Asia)
level5
topic"Geography"
sublist"Physical"
section"Southeast Asia"
Ravi River
level5
topic"Geography"
sublist"Physical"
section"South Asia"
Rhône
level5
topic"Geography"
sublist"Physical"
section"Europe_2"
River Forth
level5
topic"Geography"
sublist"Physical"
section"Great Britain"
River Severn
level5
topic"Geography"
sublist"Physical"
section"Great Britain"
River Tyne
level5
topic"Geography"
sublist"Physical"
section"Great Britain"
Red River of the South
level5
topic"Geography"
sublist"Physical"
section"United States"
Red River of the North
level5
topic"Geography"
sublist"Physical"
section"United States"
Red Flag Canal
level5
topic"Geography"
sublist"Physical"
section"Canals"
Rhine–Main–Danube Canal
level5
topic"Geography"
sublist"Physical"
section"Canals"
Rideau Canal
level5
topic"Geography"
sublist"Physical"
section"Canals"
Rabbitkettle Hot Springs
level5
topic"Geography"
sublist"Physical"
section"Geysers and hot springs"
Ross Ice Shelf
level5
topic"Geography"
sublist"Physical"
section"Glaciers and sea ice"
Red River Delta
level5
topic"Geography"
sublist"Physical"
section"River deltas"
Rodrigues
level5
topic"Geography"
sublist"Physical"
section"Africa_3"
Riau Archipelago
level5
topic"Geography"
sublist"Physical"
section"Malay Archipelago"
Rügen
level5
topic"Geography"
sublist"Physical"
section"Europe_3"
Rhodes
level5
topic"Geography"
sublist"Physical"
section"Greece"
Revillagigedo Islands
level5
topic"Geography"
sublist"Physical"
section"North and Central America: General"
Roanoke Island
level5
topic"Geography"
sublist"Physical"
section"United States_2"
Raoul Island
level5
topic"Geography"
sublist"Physical"
section"Oceania_3"
Rarotonga
level5
topic"Geography"
sublist"Physical"
section"Oceania_3"
Rotuma
level5
topic"Geography"
sublist"Physical"
section"Oceania_3"
Rocher de Sel
level5
topic"Geography"
sublist"Physical"
section"Africa_5"
Rwenzori Mountains
level5
topic"Geography"
sublist"Physical"
section"Africa_5"
Ras Dashen
level5
topic"Geography"
sublist"Physical"
section"Africa_6"
Rainbow Bridge National Monument
level5
topic"Geography"
sublist"Physical"
section"Cliffs, headlands, stacks and natural arches"
Ras ben Sakka
level5
topic"Geography"
sublist"Physical"
section"Cliffs, headlands, stacks and natural arches"
Rig-e Jenn
level5
topic"Geography"
sublist"Physical"
section"Deserts and dunes"
Råbjerg Mile
level5
topic"Geography"
sublist"Physical"
section"Deserts and dunes"
Rub' al Khali
level5
topic"Geography"
sublist"Physical"
section"Deserts and dunes"
Russian Arctic National Park
level5
topic"Geography"
sublist"Physical"
section"Europe_7"
Redwood National and State Parks
level5
topic"Geography"
sublist"Physical"
section"North America_4"
Rocky Mountain National Park
level5
topic"Geography"
sublist"Physical"
section"North America_4"
Records management
level5
topic"History"
section"Basics: General"
Recovered Territories
level5
topic"History"
section"Europe_2"
Roanoke Colony
level5
topic"History"
section"Colonial history"
Racial segregation in the United States
level5
topic"History"
section"History by demographic group"
Rural history
level5
topic"History"
section"History by topic"
Romanticism in science
level5
topic"History"
section"History of science"
Renaissance technology
level5
topic"History"
section"History of technology"
Recent African origin of modern humans
level5
topic"History"
section"Prehistory"
Roman magistrate
level5
topic"History"
section"Europe_4"
Roman legion
level5
topic"History"
section"Europe_4"
Roman conquest of Britain
level5
topic"History"
section"Europe_4"
Roman conquest of the Iberian Peninsula
level5
topic"History"
section"Europe_4"
Roman expansion in Italy
level5
topic"History"
section"Europe_4"
Roman Britain
level5
topic"History"
section"Europe_4"
Roman Egypt
level5
topic"History"
section"Europe_4"
Rus' people
level5
topic"History"
section"Europe_4"
Rebellion of the Seven States
level5
topic"History"
section"Eastern Asia"
Royal intermarriage
level5
topic"History"
section"Post-classical: General"
Route from the Varangians to the Greeks
level5
topic"History"
section"Europe: General"
Renaissance of the 12th century
level5
topic"History"
section"Western Europe"
Republic of Ancona
level5
topic"History"
section"Italy"
Republic of Pisa
level5
topic"History"
section"Italy"
Republic of Florence
level5
topic"History"
section"Italy"
Republic of Siena
level5
topic"History"
section"Italy"
Republic of Ragusa
level5
topic"History"
section"Eastern and Central Europe"
Ruthenia
level5
topic"History"
section"Eastern and Central Europe"
Rashidun Caliphate
level5
topic"History"
section"Western Asia_2"
Rashtrakutas
level5
topic"History"
section"Southern Asia_2"
Reign of Terror
level5
topic"History"
section"Western Europe_2"
Régence
level5
topic"History"
section"Western Europe_2"
Russo-Turkish wars
level5
topic"History"
section"Eastern Europe and Central"
Russo-Kazan Wars
level5
topic"History"
section"Eastern Europe and Central"
Russo-Polish War (1654–1667)
level5
topic"History"
section"Eastern Europe and Central"
Russian colonization of North America
level5
topic"History"
section"Americas_4"
Royal Proclamation of 1763
level5
topic"History"
section"Americas_4"
Regency of Algiers
level5
topic"History"
section"Africa_6"
Russian conquest of Siberia
level5
topic"History"
section"Central and Western Asia"
Rattanakosin Kingdom (1782–1932)
level5
topic"History"
section"Eastern and Southeastern Asia"
Ryukyu Kingdom
level5
topic"History"
section"Eastern and Southeastern Asia"
Roaring Twenties
level5
topic"History"
section"Modern: General"
Revolutions of 1917–1923
level5
topic"History"
section"World War I"
Romania in World War I
level5
topic"History"
section"World War I"
Russian entry into World War I
level5
topic"History"
section"World War I"
Rescue of Jews during the Holocaust
level5
topic"History"
section"World War II"
Romani Holocaust
level5
topic"History"
section"World War II"
Resistance during World War II
level5
topic"History"
section"World War II"
Russification of Finland
level5
topic"History"
section"Europe_7"
Reichstag fire
level5
topic"History"
section"Europe_7"
Rise of nationalism in Europe
level5
topic"History"
section"Europe_7"
Russian famine of 1921–1922
level5
topic"History"
section"Europe_7"
Republican faction (Spanish Civil War)
level5
topic"History"
section"Europe_7"
Red Terror (Spain)
level5
topic"History"
section"Europe_7"
Rebellions of 1837–1838
level5
topic"History"
section"Americas_5"
Reconstruction era
level5
topic"History"
section"United States_2"
Reconstruction Amendments
level5
topic"History"
section"United States_2"
Republic of Texas
level5
topic"History"
section"United States_2"
Rif War
level5
topic"History"
section"Africa_7"
Russian conquest of Central Asia
level5
topic"History"
section"Central Asia"
Republic of China (1912–1949)
level5
topic"History"
section"East Asia"
Rhodesia
level5
topic"History"
section"Africa_8"
Rhodesian Bush War
level5
topic"History"
section"Africa_8"
Rwandan Civil War
level5
topic"History"
section"Africa_8"
Rwandan Revolution
level5
topic"History"
section"Africa_8"
Redlining
level5
topic"History"
section"United States_3"
Reaganomics
level5
topic"History"
section"United States_3"
Revocation of the special status of Jammu and Kashmir
level5
topic"History"
section"South Asia_2"
Rohingya genocide
level5
topic"History"
section"Southeast Asia"
Romanian revolution
level5
topic"History"
section"Eastern Europe"
Russo-Georgian War
level5
topic"History"
section"Russian Federation"
Russo-Ukrainian War
level5
topic"History"
section"Russian Federation"
Russian invasion of Ukraine
level5
topic"History"
section"Russian Federation"
Red Army Faction
level5
topic"History"
section"Western Europe_3"
Recreational mathematics
level5
topic"Mathematics"
section"Basics"
Rate (mathematics)
level5
topic"Mathematics"
section"Basics"
Ratio
level5
topic"Mathematics"
section"Basics"
Repeating decimal
level5
topic"Mathematics"
section"Basics"
Range of a function
level5
topic"Mathematics"
section"Functions: General"
Real-valued function
level5
topic"Mathematics"
section"Functions: General"
Rational function
level5
topic"Mathematics"
section"Specific functions"
Riemann zeta function
level5
topic"Mathematics"
section"Specific functions"
Rectangular function
level5
topic"Mathematics"
section"Specific functions"
Reflection (mathematics)
level5
topic"Mathematics"
section"Geometry: General"
Rotation (mathematics)
level5
topic"Mathematics"
section"Geometry: General"
Reuleaux triangle
level5
topic"Mathematics"
section"Two-dimensional space"
Right triangle
level5
topic"Mathematics"
section"Two-dimensional space"
Rectangle
level5
topic"Mathematics"
section"Two-dimensional space"
Rhombus
level5
topic"Mathematics"
section"Two-dimensional space"
Regular polygon
level5
topic"Mathematics"
section"Two-dimensional space"
Radius
level5
topic"Mathematics"
section"Two-dimensional space"
Regular polyhedron
level5
topic"Mathematics"
section"Three-dimensional space"
Regular dodecahedron
level5
topic"Mathematics"
section"Three-dimensional space"
Regular icosahedron
level5
topic"Mathematics"
section"Three-dimensional space"
Rotations in 4-dimensional Euclidean space
level5
topic"Mathematics"
section"Four-dimensional space"
Rank (linear algebra)
level5
topic"Mathematics"
section"Linear algebra"
Rank–nullity theorem
level5
topic"Mathematics"
section"Linear algebra"
Resultant
level5
topic"Mathematics"
section"Other algebra topics"
Random walk
level5
topic"Mathematics"
section"Probability"
Randomness
level5
topic"Mathematics"
section"Probability"
Rule of inference
level5
topic"Mathematics"
section"Mathematical logic"
Reflexive relation
level5
topic"Mathematics"
section"Set theory"
Rice's theorem
level5
topic"Mathematics"
section"Computability theory"
Ramsey theory
level5
topic"Mathematics"
section"Combinatorics"
Ramsey's theorem
level5
topic"Mathematics"
section"Combinatorics"
Rule of product
level5
topic"Mathematics"
section"Combinatorics"
Regular graph
level5
topic"Mathematics"
section"Graph theory"
Rainbow matching
level5
topic"Mathematics"
section"Graph theory"
Related rates
level5
topic"Mathematics"
section"Differential calculus"
Riemann integral
level5
topic"Mathematics"
section"Integral calculus"
Riemann sum
level5
topic"Mathematics"
section"Integral calculus"
Ricci calculus
level5
topic"Mathematics"
section"Multivariable and vector calculus"
Runge–Kutta methods
level5
topic"Mathematics"
section"Differential equations"
Radius of convergence
level5
topic"Mathematics"
section"Sequences and series"
Root-finding algorithm
level5
topic"Mathematics"
section"Real analysis"
Regula falsi
level5
topic"Mathematics"
section"Real analysis"
Riemann sphere
level5
topic"Mathematics"
section"Complex analysis"
Residue (complex analysis)
level5
topic"Mathematics"
section"Complex analysis"
Residue theorem
level5
topic"Mathematics"
section"Complex analysis"
Root of unity
level5
topic"Mathematics"
section"Complex analysis"
Recurrence relation
level5
topic"Mathematics"
section"Sequences"
Repeated game
level5
topic"Mathematics"
section"Game theory"
Reed–Solomon error correction
level5
topic"Mathematics"
section"Information theory"
Red–black tree
level5
topic"Mathematics"
section"Data structures and types"
Robert Campin
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Renaissance to early modern era"
Rogier van der Weyden
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Renaissance to early modern era"
Rosa Bonheur
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Modern era"
Robert Delaunay
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Modern era"
Roy Lichtenstein
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Modern era"
Robert Crumb
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Comics and manga artists, print cartoonists and illustrators"
Rob Liefeld
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Comics and manga artists, print cartoonists and illustrators"
Richard F. Outcault
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Comics and manga artists, print cartoonists and illustrators"
Robert Ripley
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Comics and manga artists, print cartoonists and illustrators"
Richard Scarry
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Comics and manga artists, print cartoonists and illustrators"
Rumiko Takahashi
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Comics and manga artists, print cartoonists and illustrators"
Rodolphe Töpffer
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Comics and manga artists, print cartoonists and illustrators"
Robert Adam
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Architects"
Rem Koolhaas
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Architects"
Richard Meier
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Architects"
Richard Neutra
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Architects"
Renzo Piano
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Architects"
Richard Rogers
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Architects"
Robert Venturi
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Architects"
Rose Bertin
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Fashion"
Ralph Lauren
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Fashion"
Richard Garfield
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Tabletop games"
Ralph H. Baer
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Video games"
Roberta Williams
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Video games"
Richard Avedon
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Photographers"
Robert Capa
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Photographers"
Robert Doisneau
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Photographers"
Robert Frank
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Photographers"
Ron Galella
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Photographers"
Robert Mapplethorpe
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Photographers"
Richard Prince
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Photographers"
Ray Johnson
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Contemporary art: General"
Ramkinkar Baij
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Indian"
Raja Ravi Varma
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Indian"
R. C. Gorman
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Native American"
Reza Abbasi
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Persian"
Rutebeuf
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Medieval and Renaissance"
Ruggero Leoncavallo
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Romantic"
Radu Lupu
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Pianists"
Rudolf Serkin
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Pianists"
Régine Crespin
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Singers"
Renée Fleming
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Singers"
Rosa Ponselle
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Singers"
Renata Tebaldi
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Singers"
Romanos the Melodist
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Byzantine"
Raihan
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Nasheed"
Rubén Blades
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Jazz and related genres"
Rick Astley
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Popular music: General"
Rihanna
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Popular music: General"
Robbie Williams
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Popular music: General"
Roy Acuff
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Country"
Rachid Taha
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Arabic"
Rammstein
level5
topic"People"
sublist"Artists, musicians, and composers"
section"German"
Rhoma Irama
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Indonesian"
Ros Serey Sothea
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Khmer"
Rain (entertainer)
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Korean_2"
Red Velvet (group)
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Korean_2"
Roberto Carlos (singer)
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Portuguese"
Ricardo Arjona
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Spanish"
Rocío Jurado
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Spanish"
Ricky Martin
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Spanish"
Raphael (singer)
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Spanish"
Rodrigo (musician)
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Spanish"
Regine Velasquez
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Tagalog and other Filipino languages"
Rick James
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Blues, R&B, Funk, Zydeco and Soul"
R. Kelly
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Blues, R&B, Funk, Zydeco and Soul"
Ringo Starr
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Rock: General"
Roy Orbison
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Rock: General"
Roger Waters
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Rock: General"
Rod Stewart
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Rock: General"
Rush (band)
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Rock: General"
Ricky Nelson
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Rock and roll"
Ritchie Valens
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Rock and roll"
R.E.M.
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Alternative rock"
Radiohead
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Alternative rock"
Red Hot Chili Peppers
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Alternative rock"
Ronnie James Dio
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Heavy metal and hard rock"
Robert Plant
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Heavy metal and hard rock"
Ramones
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Punk and related genres"
Rick Rubin
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Music producers, songwriters and businesspeople"
Russell Simmons
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Music producers, songwriters and businesspeople"
Raichand Boral
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Musical theatre and film"
Robert Lopez
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Musical theatre and film"
Richard Rodgers
level5
topic"People"
sublist"Artists, musicians, and composers"
section"Musical theatre and film"
Richard Burbage
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage"
Richard Burton
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage"
Richard Griffiths
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage"
Rex Harrison
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage"
Raul Julia
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage"
Ralph Richardson
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage"
Ramsey Nouah
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Africa"
Ricardo Montalbán
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Americas: General"
Ryan Gosling
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Canada"
Ryan Reynolds
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Canada"
Richard Barthelmess
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Red Buttons
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Robert Downey Jr.
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Richard Dreyfuss
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Robert Duvall
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Robert Englund
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Richard Farnsworth
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Rock Hudson
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Ray Milland
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Robert Mitchum
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Ramon Novarro
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Ryan O'Neal
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Robert Redford
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Roy Scheider
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Randolph Scott
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Rod Steiger
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States"
Ranbir Kapoor
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia"
Rano Karno
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia"
Rajesh Khanna
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia"
Rentarō Mikuni
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia"
Robin Padilla
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia"
Ranveer Singh
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia"
Ronald Colman
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe"
Robert Donat
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe"
Richard Harris
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe"
Rutger Hauer
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe"
Roddy McDowall
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe"
Roger Moore
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe"
Robert Pattinson
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe"
Robert Shaw (actor)
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe"
Russell Crowe
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Oceania"
Raymond Burr
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Television"
Richard Chamberlain
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Television"
Robert Guillaume
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Television"
Ray Meagher
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Television"
Roy Rogers
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Television"
Robert Wagner
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Television"
Robert Young (actor)
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Television"
Rachel Félix
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage_2"
Rita Moreno
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Americas: General_2"
Ruby Dee
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_2"
Ruth Gordon
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_2"
Regina King
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_2"
Rosalind Russell
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_2"
Raquel Welch
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_2"
Reese Witherspoon
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_2"
Renée Zellweger
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_2"
Rakhee Gulzar
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_2"
Rani Mukerji
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_2"
Radhika Pandit
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_2"
Rekha
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_2"
Revathi
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_2"
Ruan Lingyu
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_2"
Roohangiz Saminejad
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_2"
Romy Schneider
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_2"
Rachel Weisz
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_2"
Rose McGowan
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Television_2"
Robert Joffrey
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Ballet"
Roland Petit
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Ballet"
Ram Gopal (dancer)
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Other dance"
Rudolf von Laban
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Other dance"
Ruth St. Denis
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Other dance"
Redd Foxx
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Traditional, stage and stand-up"
Russell Peters
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Traditional, stage and stand-up"
Roy Rene
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Traditional, stage and stand-up"
Richard Tarlton
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Traditional, stage and stand-up"
Roscoe Arbuckle
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Film_3"
Rodney Dangerfield
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Film_3"
Robin Williams
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Film_3"
Rowan Atkinson
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Ronnie Barker
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Roseanne Barr
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Ronnie Corbett
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Ricky Gervais
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Ronald Golias
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Rich Little
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Red Skelton
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Ramón Valdés
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Radio and television"
Rosie O'Donnell
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_3"
Regis Philbin
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_3"
RuPaul
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_3"
Ryan Seacrest
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_3"
Raffaella Carrà
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Other Europe"
Rabi Lamichhane
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_3"
Ron Jeremy
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Adult"
Rocco Siffredi
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Adult"
Ringling brothers
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Circus"
Ricky Jay
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Magicians"
Ric Flair
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Professional wrestling"
Roddy Piper
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Professional wrestling"
Rikidōzan
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Professional wrestling"
Randy Savage
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Professional wrestling"
Rossa Matilda Richter
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stunt performers and pranksters"
Rob Paulsen
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Voice actors, radio announcers and narrators"
Ryan Higa
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Web entertainers and internet personalities"
Ray William Johnson
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Web entertainers and internet personalities"
Rodolphe Salis
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Other"
Ralph Bakshi
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Animators and puppeteers"
Rudolf Bing
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage_3"
Roger L. Stevens
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Stage_3"
Robert Aldrich
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Robert Altman
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Robert Benton
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Roger Corman
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Robert J. Flaherty
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Ron Howard
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Richard Linklater
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Russ Meyer
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Rob Reiner
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Russo brothers
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Raoul Walsh
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Robert Wise
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Robert Zemeckis
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"United States_4"
Rakhshān Banietemad
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
Ritwik Ghatak
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
Rajkumar Hirani
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
Ringo Lam
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
R. Nataraja Mudaliar
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
Rithy Panh
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
Rattana Pestonji
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
Rakesh Roshan
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
Rajkumar Santoshi
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Asia_4"
Richard Attenborough
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_3"
Roberto Benigni
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_3"
René Clair
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_3"
Rainer Werner Fassbinder
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_3"
Roberto Rossellini
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_3"
Ridley Scott
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_3"
Roger Vadim
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Europe_3"
Raymond Longford
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Oceania_3"
Roy O. Disney
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Producers and executives"
Robert Evans
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Producers and executives"
Ricky Lee
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Screenwriters"
Ryan Murphy (producer)
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Showrunners, television writers and producers"
Rod Serling
level5
topic"People"
sublist"Entertainers, directors, producers, and screenwriters"
section"Showrunners, television writers and producers"
Roger de Flor
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Eastern Europe"
Robert Blake (admiral)
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Western Europe"
Richard Neville, 16th Earl of Warwick
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Western Europe"
Robert, 1st Earl of Gloucester
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Western Europe"
Roger of Lauria
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Western Europe"
Roland
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Western Europe"
Raimondo Montecuccoli
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"German states, HRE, Prussia, Austria"
Rabih az-Zubayr
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Africa_2"
Red Cloud
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"United States_2"
Raymond A. Spruance
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"United States_2"
Radomir Putnik
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Europe: General_2"
Roland Garros (aviator)
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"France_2"
Raoul Salan
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"France_2"
Robert Ritter von Greim
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Germany"
Rigas Feraios
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Greece"
Rigoberta Menchú
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Latin America"
Raoni Metuktire
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Latin America"
Ralph Abernathy
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"United States_4"
Ruby Bridges
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"United States_4"
Russell Means
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"United States_4"
Ralph Nader
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"United States_4"
Richard von Coudenhove-Kalergi
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Europe_3"
Rudi Dutschke
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Europe_3"
Robert Owen
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Europe_3"
Raoul Wallenberg
level5
topic"People"
sublist"Military personnel, revolutionaries, and activists"
section"Europe_3"
Roman Abramovich
level5
topic"People"
sublist"Miscellaneous"
section"Banking, finance and trade"
Richard B. Mellon
level5
topic"People"
sublist"Miscellaneous"
section"Banking, finance and trade"
Reed Hastings
level5
topic"People"
sublist"Miscellaneous"
section"Computing and information technology"
Robert Bosch
level5
topic"People"
sublist"Miscellaneous"
section"Electronics"
Ren Zhengfei
level5
topic"People"
sublist"Miscellaneous"
section"Electronics"
Rockefeller family
level5
topic"People"
sublist"Miscellaneous"
section"Energy"
Robert Cade
level5
topic"People"
sublist"Miscellaneous"
section"Food and drink"
Ray Kroc
level5
topic"People"
sublist"Miscellaneous"
section"Food and drink"
Richard and Maurice McDonald
level5
topic"People"
sublist"Miscellaneous"
section"Food and drink"
Roger Ailes
level5
topic"People"
sublist"Miscellaneous"
section"Media and communication"
Ratan Tata
level5
topic"People"
sublist"Miscellaneous"
section"Mining and metallurgy"
Richard Branson
level5
topic"People"
sublist"Miscellaneous"
section"Multiple industries"
Rebiya Kadeer
level5
topic"People"
sublist"Miscellaneous"
section"Real estate and landowners"
Ruth Handler
level5
topic"People"
sublist"Miscellaneous"
section"Recreation"
Roy Raymond
level5
topic"People"
sublist"Miscellaneous"
section"Recreation"
Rowland Hussey Macy
level5
topic"People"
sublist"Miscellaneous"
section"Retail"
Richard Warren Sears
level5
topic"People"
sublist"Miscellaneous"
section"Retail"
Russell Sage
level5
topic"People"
sublist"Miscellaneous"
section"Transport"
Richard Fitzalan, 3rd Earl of Arundel
level5
topic"People"
sublist"Miscellaneous"
section"Other"
René-Robert Cavelier, Sieur de La Salle
level5
topic"People"
sublist"Miscellaneous"
section"Early modern"
Robert Gray (sea captain)
level5
topic"People"
sublist"Miscellaneous"
section"Early modern"
Richard Hawkins
level5
topic"People"
sublist"Miscellaneous"
section"Early modern"
Robert O'Hara Burke
level5
topic"People"
sublist"Miscellaneous"
section"Modern"
Richard Francis Burton
level5
topic"People"
sublist"Miscellaneous"
section"Modern"
Richard E. Byrd
level5
topic"People"
sublist"Miscellaneous"
section"Modern"
René Caillié
level5
topic"People"
sublist"Miscellaneous"
section"Modern"
Ranulph Fiennes
level5
topic"People"
sublist"Miscellaneous"
section"Modern"
Roberto Ivens
level5
topic"People"
sublist"Miscellaneous"
section"Modern"
Robin Knox-Johnston
level5
topic"People"
sublist"Miscellaneous"
section"Modern"
Robert Peary
level5
topic"People"
sublist"Miscellaneous"
section"Modern"
Roberta Bondar
level5
topic"People"
sublist"Miscellaneous"
section"Space travelers"
Ronald Evans (astronaut)
level5
topic"People"
sublist"Miscellaneous"
section"Space travelers"
Richard F. Gordon Jr.
level5
topic"People"
sublist"Miscellaneous"
section"Space travelers"
Red Adair
level5
topic"People"
sublist"Miscellaneous"
section"Law enforcement and fire service"
Robert Mueller
level5
topic"People"
sublist"Miscellaneous"
section"Law enforcement and fire service"
Ronald Noble
level5
topic"People"
sublist"Miscellaneous"
section"Law enforcement and fire service"
Roger Rogerson
level5
topic"People"
sublist"Miscellaneous"
section"Law enforcement and fire service"
Ramón Mercader
level5
topic"People"
sublist"Miscellaneous"
section"Assassination"
Reinhard Heydrich
level5
topic"People"
sublist"Miscellaneous"
section"Crimes against humanity"
Rudolf Höss
level5
topic"People"
sublist"Miscellaneous"
section"Crimes against humanity"
Ratko Mladić
level5
topic"People"
sublist"Miscellaneous"
section"Crimes against humanity"
Robert Tappan Morris
level5
topic"People"
sublist"Miscellaneous"
section"Computer crimes"
Ross Ulbricht
level5
topic"People"
sublist"Miscellaneous"
section"Computer crimes"
Robert Hanssen
level5
topic"People"
sublist"Miscellaneous"
section"Espionage"
Richard Sorge
level5
topic"People"
sublist"Miscellaneous"
section"Espionage"
Richard Kuklinski
level5
topic"People"
sublist"Miscellaneous"
section"Murder, serial killing, mass murder"
Richard Ramirez
level5
topic"People"
sublist"Miscellaneous"
section"Murder, serial killing, mass murder"
Raymond Washington
level5
topic"People"
sublist"Miscellaneous"
section"Organized crime"
Ronnie Biggs
level5
topic"People"
sublist"Miscellaneous"
section"Thievery, robbery and hijacking"
Rudy Kurniawan
level5
topic"People"
sublist"Miscellaneous"
section"White collar crime"
Rodney King
level5
topic"People"
sublist"Miscellaneous"
section"Victims"
Robert Mondavi
level5
topic"People"
sublist"Miscellaneous"
section"Chefs, bartenders and winemakers"
Robert Rayford
level5
topic"People"
sublist"Miscellaneous"
section"Case studies"
Robert Wadlow
level5
topic"People"
sublist"Miscellaneous"
section"Case studies"
Ryan White
level5
topic"People"
sublist"Miscellaneous"
section"Case studies"
Rick Baker
level5
topic"People"
sublist"Miscellaneous"
section"Cosmetics people"
Raymond Bessone
level5
topic"People"
sublist"Miscellaneous"
section"Cosmetics people"
Robert Dudley, 1st Earl of Leicester
level5
topic"People"
sublist"Miscellaneous"
section"Socialites"
Richard Simmons
level5
topic"People"
sublist"Miscellaneous"
section"Bodybuilding and physical fitness"
Robert Atkins (physician)
level5
topic"People"
sublist"Miscellaneous"
section"Diets and nutrition"
Richard Trethewey
level5
topic"People"
sublist"Miscellaneous"
section"Tradespeople"
Richard Bandler
level5
topic"People"
sublist"Miscellaneous"
section"Other_2"
Robert Ettinger
level5
topic"People"
sublist"Miscellaneous"
section"Other_2"
Robert Coates (actor)
level5
topic"People"
sublist"Miscellaneous"
section"Other_3"
Roger Bacon
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Post-classical (AD 500 to 1500)"
Robert Grosseteste
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Post-classical (AD 500 to 1500)"
Ramon Llull
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Post-classical (AD 500 to 1500)"
Ronald Dworkin
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Americas"
Rebecca Goldstein
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Americas"
Robert Nozick
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Americas"
Robert M. Pirsig
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Americas"
Richard Rorty
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Americas"
Raymond Aron
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Europe"
Rudolf Carnap
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Europe"
R. G. Collingwood
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Europe"
Rudolf Christoph Eucken
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Europe"
R. M. Hare
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Europe"
Roger Scruton
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Europe"
Rudolf Steiner
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Europe"
Rashid al-Din Hamadani
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Post-classical (AD 500 to 1500)_2"
Randolph L. Braham
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Robert Caro
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Ron Chernow
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Robert Conquest
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Richard J. Evans
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Robert Fogel
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Richard Hofstadter
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Robert Paxton
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
R. H. Tawney
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Richard Wolin
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern (after AD 1800)_2"
Richard Cantillon
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Ronald Coase
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Robert F. Engle
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Ragnar Frisch
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Robert Lucas Jr.
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Robert C. Merton
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Robert Mundell
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Roger Myerson
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Raghuram Rajan
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Reinhard Selten
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Robert J. Shiller
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Robert Solow
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Richard Stone
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Richard Thaler
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Economists and business theorists"
Ralph Bunche
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Political scientists, theorists, and writers"
Robert D. Putnam
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Political scientists, theorists, and writers"
Robert M. W. Dixon
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Linguists"
Ray Jackendoff
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Linguists"
Roman Jakobson
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Linguists"
Rasmus Rask
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Linguists"
Ralf Dahrendorf
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Sociologists"
Robert K. Merton
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Sociologists"
Robert E. Park
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Sociologists"
Raymond Williams
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Sociologists"
Robert Ballard
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Anthropologists and archaeologists"
Ruth Benedict
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Anthropologists and archaeologists"
Richard Leakey
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Anthropologists and archaeologists"
Richard Borshay Lee
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Anthropologists and archaeologists"
Ralph Linton
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Anthropologists and archaeologists"
Robert Lowie
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Anthropologists and archaeologists"
Roland Barthes
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Art historians, theorists and critics"
Roger Fry
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Art historians, theorists and critics"
René Girard
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Art historians, theorists and critics"
Rufus Wilmot Griswold
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Art historians, theorists and critics"
Roberto Longhi
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Art historians, theorists and critics"
Richard Bentley
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Classicists"
Richard Porson
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Classicists"
Ronald Syme
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Classicists"
Rudolf Kjellén
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Human geographers and cartographers"
Radhabinod Pal
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Asia_2"
René Cassin
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern Europe"
Robert Cecil, 1st Viscount Cecil of Chelwood
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern Europe"
Roland Freisler
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern Europe"
Rudolf von Gneist
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Modern Europe"
Robert Bork
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"United States"
Ruth Bader Ginsburg
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"United States"
Raphael Lemkin
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"United States"
Robert R. Livingston
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"United States"
Richard Posner
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"United States"
Robert Joseph Pothier
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"United States"
Roger B. Taney
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"United States"
Robert Cialdini
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Public relations, marketing and advertising theorists"
Richard von Krafft-Ebing
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Sexologists"
Ray Kurzweil
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Other social sciences"
Robert M. Gagné
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Psychologists"
R. D. Laing
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Psychologists"
Rollo May
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Psychologists"
Robert Plomin
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Psychologists"
Robert Sternberg
level5
topic"People"
sublist"Philosophers, historians, political and social scientists"
section"Psychologists"
Ramesses VI
level5
topic"People"
sublist"Politicians and leaders"
section"Egypt"
Romulus
level5
topic"People"
sublist"Politicians and leaders"
section"Roman Kingdom"
Romulus Augustulus
level5
topic"People"
sublist"Politicians and leaders"
section"Post-division, West"
Rajendra I
level5
topic"People"
sublist"Politicians and leaders"
section"Southern Asia_2"
Rashidun
level5
topic"People"
sublist"Politicians and leaders"
section"Caliphates"
Richard II of England
level5
topic"People"
sublist"Politicians and leaders"
section"Monarchs of England"
Richard III of England
level5
topic"People"
sublist"Politicians and leaders"
section"Monarchs of England"
Ruaidrí Ua Conchobair
level5
topic"People"
sublist"Politicians and leaders"
section"Ireland"
Rollo
level5
topic"People"
sublist"Politicians and leaders"
section"France"
Robert II of France
level5
topic"People"
sublist"Politicians and leaders"
section"Capetian Monarchs of France"
Rudolf I of Germany
level5
topic"People"
sublist"Politicians and leaders"
section"Interregnum"
Rainier I of Monaco, Lord of Cagnes
level5
topic"People"
sublist"Politicians and leaders"
section"Monaco"
Ramiro II of León
level5
topic"People"
sublist"Politicians and leaders"
section"Iberia"
Ramon Berenguer IV, Count of Barcelona
level5
topic"People"
sublist"Politicians and leaders"
section"Iberia"
Rurik
level5
topic"People"
sublist"Politicians and leaders"
section"Russia and Ukraine"
Robert Morris (financier)
level5
topic"People"
sublist"Politicians and leaders"
section"Other"
Rajah Sulayman
level5
topic"People"
sublist"Politicians and leaders"
section"Southeastern Asia_2"
Rudolf II, Holy Roman Emperor
level5
topic"People"
sublist"Politicians and leaders"
section"Holy Roman Empire, Austria"
Roi Mata
level5
topic"People"
sublist"Politicians and leaders"
section"Oceania"
Ranavalona I
level5
topic"People"
sublist"Politicians and leaders"
section"Eastern Africa"
Rutherford B. Hayes
level5
topic"People"
sublist"Politicians and leaders"
section"Presidents_2"
Robert M. La Follette
level5
topic"People"
sublist"Politicians and leaders"
section"Other_4"
R. B. Bennett
level5
topic"People"
sublist"Politicians and leaders"
section"Canada"
Robert Borden
level5
topic"People"
sublist"Politicians and leaders"
section"Canada"
Ricardo Jiménez Oreamuno
level5
topic"People"
sublist"Politicians and leaders"
section"Costa Rica"
Rafael Carrera
level5
topic"People"
sublist"Politicians and leaders"
section"Guatemala"
Roque Sáenz Peña
level5
topic"People"
sublist"Politicians and leaders"
section"Argentina"
Ramón Freire
level5
topic"People"
sublist"Politicians and leaders"
section"Chile"
Rafael Núñez
level5
topic"People"
sublist"Politicians and leaders"
section"Colombia"
Rafael Urdaneta
level5
topic"People"
sublist"Politicians and leaders"
section"Colombia"
Ramón Castilla
level5
topic"People"
sublist"Politicians and leaders"
section"Peru"
Rama II
level5
topic"People"
sublist"Politicians and leaders"
section"Southeastern Asia_3"
Ranjit Singh
level5
topic"People"
sublist"Politicians and leaders"
section"India"
Reza Shah
level5
topic"People"
sublist"Politicians and leaders"
section"Iran"
Raymond Poincaré
level5
topic"People"
sublist"Politicians and leaders"
section"France_3"
Rudolf Hess
level5
topic"People"
sublist"Politicians and leaders"
section"Nazi Germany"
Robert Jenkinson, 2nd Earl of Liverpool
level5
topic"People"
sublist"Politicians and leaders"
section"Prime Ministers_2"
Robert Gascoyne-Cecil, 3rd Marquess of Salisbury
level5
topic"People"
sublist"Politicians and leaders"
section"Prime Ministers_2"
Ramsay MacDonald
level5
topic"People"
sublist"Politicians and leaders"
section"Prime Ministers_2"
Richard Seddon
level5
topic"People"
sublist"Politicians and leaders"
section"New Zealand"
Ruth Williams Khama
level5
topic"People"
sublist"Politicians and leaders"
section"Southern Africa"
René Lévesque
level5
topic"People"
sublist"Politicians and leaders"
section"Other_9"
Richard J. Daley
level5
topic"People"
sublist"Politicians and leaders"
section"Other_10"
Robert F. Kennedy
level5
topic"People"
sublist"Politicians and leaders"
section"Other_10"
Robert McNamara
level5
topic"People"
sublist"Politicians and leaders"
section"Other_10"
Ross Perot
level5
topic"People"
sublist"Politicians and leaders"
section"Other_10"
Roberto D'Aubuisson
level5
topic"People"
sublist"Politicians and leaders"
section"El Salvador_2"
Ramón Villeda Morales
level5
topic"People"
sublist"Politicians and leaders"
section"Honduras_2"
Raúl Castro
level5
topic"People"
sublist"Politicians and leaders"
section"Cuba_2"
Ramón Grau
level5
topic"People"
sublist"Politicians and leaders"
section"Cuba_2"
Raúl Alfonsín
level5
topic"People"
sublist"Politicians and leaders"
section"Argentina_2"
Reynaldo Bignone
level5
topic"People"
sublist"Politicians and leaders"
section"Argentina_2"
René Barrientos
level5
topic"People"
sublist"Politicians and leaders"
section"Bolivia_2"
Ricardo Lagos
level5
topic"People"
sublist"Politicians and leaders"
section"Chile_2"
Rodrigo Borja Cevallos
level5
topic"People"
sublist"Politicians and leaders"
section"Ecuador_2"
Rafael Correa
level5
topic"People"
sublist"Politicians and leaders"
section"Ecuador_2"
Rómulo Betancourt
level5
topic"People"
sublist"Politicians and leaders"
section"Venezuela_2"
Rafael Caldera
level5
topic"People"
sublist"Politicians and leaders"
section"Venezuela_2"
Raúl Leoni
level5
topic"People"
sublist"Politicians and leaders"
section"Venezuela_2"
Ramón José Velásquez
level5
topic"People"
sublist"Politicians and leaders"
section"Venezuela_2"
Roh Moo-hyun
level5
topic"People"
sublist"Politicians and leaders"
section"S. Korea"
Rodrigo Duterte
level5
topic"People"
sublist"Politicians and leaders"
section"Philippines"
Ramon Magsaysay
level5
topic"People"
sublist"Politicians and leaders"
section"Philippines"
Rajiv Gandhi
level5
topic"People"
sublist"Politicians and leaders"
section"India_2"
Rajendra Prasad
level5
topic"People"
sublist"Politicians and leaders"
section"India_2"
Ram Baran Yadav
level5
topic"People"
sublist"Politicians and leaders"
section"Nepal"
Robert Kocharyan
level5
topic"People"
sublist"Politicians and leaders"
section"Armenia"
Rauf Denktaş
level5
topic"People"
sublist"Politicians and leaders"
section"Cyprus and Northern Cyprus"
Rafic Hariri
level5
topic"People"
sublist"Politicians and leaders"
section"Lebanon"
Rashid Karami
level5
topic"People"
sublist"Politicians and leaders"
section"Lebanon"
Riad Al Solh
level5
topic"People"
sublist"Politicians and leaders"
section"Lebanon"
Recep Tayyip Erdoğan
level5
topic"People"
sublist"Politicians and leaders"
section"Turkey"
René Coty
level5
topic"People"
sublist"Politicians and leaders"
section"France_4"
Robert Schuman
level5
topic"People"
sublist"Politicians and leaders"
section"France_4"
Rainier III, Prince of Monaco
level5
topic"People"
sublist"Politicians and leaders"
section"Monaco_4"
Ruud Lubbers
level5
topic"People"
sublist"Politicians and leaders"
section"Netherlands_3"
Rishi Sunak
level5
topic"People"
sublist"Politicians and leaders"
section"Prime Ministers_4"
Ramzan Kadyrov
level5
topic"People"
sublist"Politicians and leaders"
section"Chechnya"
Robert Menzies
level5
topic"People"
sublist"Politicians and leaders"
section"Prime ministers_2"
Roger Douglas
level5
topic"People"
sublist"Politicians and leaders"
section"New Zealand_2"
Robert Muldoon
level5
topic"People"
sublist"Politicians and leaders"
section"New Zealand_2"
Raja Ram Mohan Roy
level5
topic"People"
sublist"Religious figures"
section"Modern"
Rupa Goswami
level5
topic"People"
sublist"Religious figures"
section"Modern"
Rav Ashi
level5
topic"People"
sublist"Religious figures"
section"Judaism"
Robert Bellarmine
level5
topic"People"
sublist"Religious figures"
section"Pre-modern, -1800"
Richard Allen (bishop)
level5
topic"People"
sublist"Religious figures"
section"Early modern, 1519-1800"
Roger Williams
level5
topic"People"
sublist"Religious figures"
section"Early modern, 1519-1800"
Rabia Basri
level5
topic"People"
sublist"Religious figures"
section"Sufism"
Raël
level5
topic"People"
sublist"Religious figures"
section"Other"
Rajneesh
level5
topic"People"
sublist"Religious figures"
section"Other"
Rudolf Clausius
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Raymond Davis Jr.
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Riccardo Giacconi
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Roy J. Glauber
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Robert Hofstadter
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Russell Alan Hulse
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Robert B. Laughlin
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Rudolf Mössbauer
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Robert Coleman Richardson
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Rolf Maximilian Sievert
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Richard E. Taylor
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Rainer Weiss
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern"
Reinhard Genzel
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Astronomy"
Robert Woodrow Wilson
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Astronomy"
Roger Joseph Boscovich
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Chemistry"
Robert Bunsen
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Chemistry"
Robert S. Mulliken
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Chemistry"
Robert Brown (botanist, born 1773)
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
Richard Dawkins
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
Robin Wall Kimmerer
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
Rudolf Leuckart
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
Rita Levi-Montalcini
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
Richard Owen
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
René Antoine Ferchault de Réaumur
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
Robert Trivers
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
Robert Whittaker (ecologist)
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Biology"
Ralph Bathurst
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Medicine"
Richard Doll
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Medicine"
Robert Gallo
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Medicine"
Robert A. Kehoe
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Medicine"
Robert Knox (surgeon)
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Medicine"
René Laennec
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Medicine"
Robert Lustig
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Medicine"
Rosalyn Sussman Yalow
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Medicine"
Robert FitzRoy
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Physical geography"
Roderick Murchison
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Physical geography"
Richard Arkwright
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Inventors and engineers"
Roger Béteille
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Inventors and engineers"
Ross Brawn
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Inventors and engineers"
Robert Esnault-Pelterie
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Inventors and engineers"
Reginald Fessenden
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Inventors and engineers"
Richard Jordan Gatling
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Inventors and engineers"
Rowland Hill
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Inventors and engineers"
Robert Aumann
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern_2"
Richard E. Bellman
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern_2"
Richard Dedekind
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern_2"
Richard K. Guy
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern_2"
Robert Langlands
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern_2"
Roger Penrose
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern_2"
Radhanath Sikdar
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Modern_2"
Robert Kahn (computer scientist)
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Computer scientists and programmers"
Richard M. Karp
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Computer scientists and programmers"
Roger Sisson
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Computer scientists and programmers"
Richard Stallman
level5
topic"People"
sublist"Scientists, inventors, and mathematicians"
section"Computer scientists and programmers"
Roberto Baggio
level5
topic"People"
sublist"Sports figures"
section"European"
Robert Lewandowski
level5
topic"People"
sublist"Sports figures"
section"European"
Roger Milla
level5
topic"People"
sublist"Sports figures"
section"Others"
Romário
level5
topic"People"
sublist"Sports figures"
section"Others"
Ryan Giggs
level5
topic"People"
sublist"Sports figures"
section"European_2"
Roy Keane
level5
topic"People"
sublist"Sports figures"
section"European_2"
Ronaldinho
level5
topic"People"
sublist"Sports figures"
section"Others_2"
Roberto Carlos
level5
topic"People"
sublist"Sports figures"
section"Defenders"
Ruud Gullit
level5
topic"People"
sublist"Sports figures"
section"Defenders"
Rick Barry
level5
topic"People"
sublist"Sports figures"
section"Forwards_2"
Ray Allen
level5
topic"People"
sublist"Sports figures"
section"Guards_2"
Ramon Fernandez
level5
topic"People"
sublist"Sports figures"
section"Non-U.S. men"
Rogers Hornsby
level5
topic"People"
sublist"Sports figures"
section"United States"
Rickey Henderson
level5
topic"People"
sublist"Sports figures"
section"United States_2"
Roger Maris
level5
topic"People"
sublist"Sports figures"
section"United States_2"
Roberto Clemente
level5
topic"People"
sublist"Sports figures"
section"Others_4"
Roger Clemens
level5
topic"People"
sublist"Sports figures"
section"United States_3"
Randy Johnson
level5
topic"People"
sublist"Sports figures"
section"United States_3"
Rahul Dravid
level5
topic"People"
sublist"Sports figures"
section"Batters"
Ricky Ponting
level5
topic"People"
sublist"Sports figures"
section"Batters"
Ranjitsinhji
level5
topic"People"
sublist"Sports figures"
section"Batters"
Richard Hadlee
level5
topic"People"
sublist"Sports figures"
section"All-rounders"
Ray Bourque
level5
topic"People"
sublist"Sports figures"
section"Defense"
Red Grange
level5
topic"People"
sublist"Sports figures"
section"Running backs"
Reggie White
level5
topic"People"
sublist"Sports figures"
section"Linemen"
Ray Lewis
level5
topic"People"
sublist"Sports figures"
section"Linebackers and defensive backs"
Ronnie Lott
level5
topic"People"
sublist"Sports figures"
section"Linebackers and defensive backs"
Roy Emerson
level5
topic"People"
sublist"Sports figures"
section"Tennis"
René Lacoste
level5
topic"People"
sublist"Sports figures"
section"Tennis"
Renée Richards
level5
topic"People"
sublist"Sports figures"
section"Tennis"
Richard Sears (tennis)
level5
topic"People"
sublist"Sports figures"
section"Tennis"
Rory McIlroy
level5
topic"People"
sublist"Sports figures"
section"Golf"
Roger Bannister
level5
topic"People"
sublist"Sports figures"
section"Athletics"
Robert Barclay Allardice
level5
topic"People"
sublist"Sports figures"
section"Athletics"
Randy Barnes
level5
topic"People"
sublist"Sports figures"
section"Athletics"
Rafer Johnson
level5
topic"People"
sublist"Sports figures"
section"Athletics"
Robert Korzeniowski
level5
topic"People"
sublist"Sports figures"
section"Athletics"
Renaud Lavillenie
level5
topic"People"
sublist"Sports figures"
section"Athletics"
Robin Cousins
level5
topic"People"
sublist"Sports figures"
section"Figure skating"
Roberto Durán
level5
topic"People"
sublist"Sports figures"
section"Boxing"
Rocky Marciano
level5
topic"People"
sublist"Sports figures"
section"Boxing"
Ryoko Tani
level5
topic"People"
sublist"Sports figures"
section"Judo"
Randy Couture
level5
topic"People"
sublist"Sports figures"
section"Mixed martial arts"
Royce Gracie
level5
topic"People"
sublist"Sports figures"
section"Mixed martial arts"
Ronda Rousey
level5
topic"People"
sublist"Sports figures"
section"Mixed martial arts"
Rachel Atherton
level5
topic"People"
sublist"Sports figures"
section"Cycling"
Richard Petty
level5
topic"People"
sublist"Sports figures"
section"Auto racing"
Ryan Lochte
level5
topic"People"
sublist"Sports figures"
section"Swimming"
Roland Matthes
level5
topic"People"
sublist"Sports figures"
section"Swimming"
Reg Gasnier
level5
topic"People"
sublist"Sports figures"
section"Rugby league"
Richie McCaw
level5
topic"People"
sublist"Sports figures"
section"Rugby union"
Raymond Ceulemans
level5
topic"People"
sublist"Sports figures"
section"Cue sports"
Ralph Greenleaf
level5
topic"People"
sublist"Sports figures"
section"Cue sports"
Ronnie O'Sullivan
level5
topic"People"
sublist"Sports figures"
section"Cue sports"
Rudolf Wanderone
level5
topic"People"
sublist"Sports figures"
section"Cue sports"
Ratchanok Intanon
level5
topic"People"
sublist"Sports figures"
section"Badminton"
Rudy Hartono
level5
topic"People"
sublist"Sports figures"
section"Badminton"
Ronnie Coleman
level5
topic"People"
sublist"Sports figures"
section"Bodybuilding"
Reinhold Messner
level5
topic"People"
sublist"Sports figures"
section"Climbing and mountaineering"
Reiner Klimke
level5
topic"People"
sublist"Sports figures"
section"Equestrianism"
Ralf Schumann
level5
topic"People"
sublist"Sports figures"
section"Shooting sports"
Rodney Mullen
level5
topic"People"
sublist"Sports figures"
section"Skateboarding"
Robert Fulford (croquet player)
level5
topic"People"
sublist"Sports figures"
section"Croquet"
Ricky Carmichael
level5
topic"People"
sublist"Sports figures"
section"Motocross"
Ron Barassi
level5
topic"People"
sublist"Sports figures"
section"Australian rules football"
Rechelle Hawkes
level5
topic"People"
sublist"Sports figures"
section"Field hockey"
Rakesh Kumar (kabaddi)
level5
topic"People"
sublist"Sports figures"
section"Kabaddi"
Regla Torres
level5
topic"People"
sublist"Sports figures"
section"Volleyball"
Robert Guérin
level5
topic"People"
sublist"Sports figures"
section"Association football_2"
Rinus Michels
level5
topic"People"
sublist"Sports figures"
section"Association football_2"
Rodolphe Seeldrayers
level5
topic"People"
sublist"Sports figures"
section"Association football_2"
Red Auerbach
level5
topic"People"
sublist"Sports figures"
section"Basketball_2"
Ratko Rudić
level5
topic"People"
sublist"Sports figures"
section"Water polo_2"
Raymond Carver
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Robert W. Chambers
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Robin Cook (American novelist)
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Ralph Ellison
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Roxane Gay
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Robert Greene (American author)
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Robert E. Howard
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Robert Kiyosaki
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Robert Ludlum
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Ross Macdonald
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Richard Peck (writer)
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Richard Price (writer)
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Rick Riordan
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
R. L. Stine
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Rex Stout
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Rebecca Walker
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Richard Wright (author)
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Richard Yates (novelist)
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada"
Roberto Bolaño
level5
topic"People"
sublist"Writers and journalists"
section"Latin America"
Ricardo Güiraldes
level5
topic"People"
sublist"Writers and journalists"
section"Latin America"
Raul Pompeia
level5
topic"People"
sublist"Writers and journalists"
section"Latin America"
Rachel de Queiroz
level5
topic"People"
sublist"Writers and journalists"
section"Latin America"
R. K. Narayan
level5
topic"People"
sublist"Writers and journalists"
section"Asia_4"
Raja Rao
level5
topic"People"
sublist"Writers and journalists"
section"Asia_4"
Ri Ki-yong
level5
topic"People"
sublist"Writers and journalists"
section"Asia_4"
Ryōtarō Shiba
level5
topic"People"
sublist"Writers and journalists"
section"Asia_4"
René Belbenoît
level5
topic"People"
sublist"Writers and journalists"
section"Western Europe"
Roger Martin du Gard
level5
topic"People"
sublist"Writers and journalists"
section"Western Europe"
Robert Musil
level5
topic"People"
sublist"Writers and journalists"
section"Western Europe"
Robert Pinget
level5
topic"People"
sublist"Writers and journalists"
section"Western Europe"
Raymond Queneau
level5
topic"People"
sublist"Writers and journalists"
section"Western Europe"
Richard Aldington
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland"
Roddy Doyle
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland"
Roger Hargreaves
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland"
Ruth Prawer Jhabvala
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland"
Rebecca West
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland"
Richard Flanagan
level5
topic"People"
sublist"Writers and journalists"
section"Australia"
Ruth Park
level5
topic"People"
sublist"Writers and journalists"
section"Australia"
Ramprasad Sen
level5
topic"People"
sublist"Writers and journalists"
section"Asia_7"
Richard Crashaw
level5
topic"People"
sublist"Writers and journalists"
section"Europe_7"
Robert Fergusson
level5
topic"People"
sublist"Writers and journalists"
section"Europe_7"
Robert Henryson
level5
topic"People"
sublist"Writers and journalists"
section"Europe_7"
Robert Herrick (poet)
level5
topic"People"
sublist"Writers and journalists"
section"Europe_7"
Robert Southwell (priest)
level5
topic"People"
sublist"Writers and journalists"
section"Europe_7"
Rae Armantrout
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada_2"
Robert Creeley
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada_2"
Robert Duncan (poet)
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada_2"
Rupi Kaur
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada_2"
Robert Lowell
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada_2"
Robin Morgan
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada_2"
Robert Penn Warren
level5
topic"People"
sublist"Writers and journalists"
section"US and Canada_2"
Raimundo Correia
level5
topic"People"
sublist"Writers and journalists"
section"Latin America_2"
Rubén Darío
level5
topic"People"
sublist"Writers and journalists"
section"Latin America_2"
Rasul Gamzatov
level5
topic"People"
sublist"Writers and journalists"
section"Russia_2"
René Char
level5
topic"People"
sublist"Writers and journalists"
section"Western Europe_2"
Robert Desnos
level5
topic"People"
sublist"Writers and journalists"
section"Western Europe_2"
Robert Bridges
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland_2"
Rupert Brooke
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland_2"
Robert Browning
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland_2"
Robert Graves
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland_2"
Robert Southey
level5
topic"People"
sublist"Writers and journalists"
section"UK and Ireland_2"
Robert E. Sherwood
level5
topic"People"
sublist"Writers and journalists"
section"America_2"
Romain Rolland
level5
topic"People"
sublist"Writers and journalists"
section"Europe_9"
R. C. Sherriff
level5
topic"People"
sublist"Writers and journalists"
section"Europe_9"
René Goscinny
level5
topic"People"
sublist"Writers and journalists"
section"Comics writers"
Richard Genée
level5
topic"People"
sublist"Writers and journalists"
section"Librettists"
Renato Simoni
level5
topic"People"
sublist"Writers and journalists"
section"Librettists"
Ronan Farrow
level5
topic"People"
sublist"Writers and journalists"
section"Journalists: General"
Robert Fisk
level5
topic"People"
sublist"Writers and journalists"
section"Journalists: General"
Ryszard Kapuściński
level5
topic"People"
sublist"Writers and journalists"
section"Journalists: General"
Robert Novak
level5
topic"People"
sublist"Writers and journalists"
section"Journalists: General"
Randy Shilts
level5
topic"People"
sublist"Writers and journalists"
section"Journalists: General"
Rush Limbaugh
level5
topic"People"
sublist"Writers and journalists"
section"Broadcast journalists, presenters and commentators"
Rachel Maddow
level5
topic"People"
sublist"Writers and journalists"
section"Broadcast journalists, presenters and commentators"
Richard Blackwell
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Robert Christgau
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Roger Ebert
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Ralph J. Gleason
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Robert Hilburn
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Robert Hughes (critic)
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Robert Parker (wine critic)
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Rex Reed
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Richard Roeper
level5
topic"People"
sublist"Writers and journalists"
section"Critics"
Rudolf Augstein
level5
topic"People"
sublist"Writers and journalists"
section"Publishers and editors"
Rebekah Brooks
level5
topic"People"
sublist"Writers and journalists"
section"Publishers and editors"
Roy W. Howard
level5
topic"People"
sublist"Writers and journalists"
section"Publishers and editors"
Roberto Noble
level5
topic"People"
sublist"Writers and journalists"
section"Publishers and editors"
Richard Steele
level5
topic"People"
sublist"Writers and journalists"
section"Publishers and editors"
Richie Benaud
level5
topic"People"
sublist"Writers and journalists"
section"Sports journalists, sportswriters, commentators and sports announcers"
Ray Warren
level5
topic"People"
sublist"Writers and journalists"
section"Sports journalists, sportswriters, commentators and sports announcers"
Religious philosophy
level5
topic"Philosophy and religion"
section"Religious philosophy"
Rule utilitarianism
level5
topic"Philosophy and religion"
section"Approaches"
Rationality
level5
topic"Philosophy and religion"
section"Concepts_2"
Relationship between religion and science
level5
topic"Philosophy and religion"
section"Basics_2"
Religious studies
level5
topic"Philosophy and religion"
section"Basics_2"
Religious violence
level5
topic"Philosophy and religion"
section"Basics_2"
Religious violence in India
level5
topic"Philosophy and religion"
section"Basics_2"
Religious ecstasy
level5
topic"Philosophy and religion"
section"Practices"
Revelation
level5
topic"Philosophy and religion"
section"Practices"
Rite of passage
level5
topic"Philosophy and religion"
section"Practices"
Retreat (spiritual)
level5
topic"Philosophy and religion"
section"Practices"
Religious denomination
level5
topic"Philosophy and religion"
section"Institutions"
Russell's teapot
level5
topic"Philosophy and religion"
section"Non-theistic philosophies"
Repentance
level5
topic"Philosophy and religion"
section"Common concepts"
Rapture
level5
topic"Philosophy and religion"
section"Theology"
Resurrection of Jesus
level5
topic"Philosophy and religion"
section"Theology"
Restorationism
level5
topic"Philosophy and religion"
section"Theology"
Roman Curia
level5
topic"Philosophy and religion"
section"Denominations"
Rosary
level5
topic"Philosophy and religion"
section"Practices_2"
Rule of Saint Benedict
level5
topic"Philosophy and religion"
section"Practices_2"
Rabbinic Judaism
level5
topic"Philosophy and religion"
section"Judaism"
Rigveda
level5
topic"Philosophy and religion"
section"Texts_2"
Rinzai school
level5
topic"Philosophy and religion"
section"Traditions"
Rebirth (Buddhism)
level5
topic"Philosophy and religion"
section"Concepts_5"
Rūpa
level5
topic"Philosophy and religion"
section"Concepts_5"
Refuge in Buddhism
level5
topic"Philosophy and religion"
section"Concepts_5"
Rigpa
level5
topic"Philosophy and religion"
section"Concepts_5"
Rainbow body
level5
topic"Philosophy and religion"
section"Concepts_5"
Right Ginza
level5
topic"Philosophy and religion"
section"Other religions: General"
Roman festivals
level5
topic"Philosophy and religion"
section"Ancient religions"
Rosicrucianism
level5
topic"Philosophy and religion"
section"Western esotericism"
Ragnarök
level5
topic"Philosophy and religion"
section"By culture and religion"
Rebecca
level5
topic"Philosophy and religion"
section"Abrahamic and Judaic mythology"
Rachel
level5
topic"Philosophy and religion"
section"Abrahamic and Judaic mythology"
Ruth (biblical figure)
level5
topic"Philosophy and religion"
section"Abrahamic and Judaic mythology"
Rainbow Serpent
level5
topic"Philosophy and religion"
section"Australian aborigine mythology"
Romulus and Remus
level5
topic"Philosophy and religion"
section"Roman deities and mythological people"
Radha
level5
topic"Philosophy and religion"
section"Hindu mythology"
Rishabhanatha
level5
topic"Philosophy and religion"
section"Jainist mythology"
Raijin
level5
topic"Philosophy and religion"
section"Shinto mythology"
Raphael (archangel)
level5
topic"Philosophy and religion"
section"Legendary creatures"
Rakshasa
level5
topic"Philosophy and religion"
section"Legendary creatures"
Ravana
level5
topic"Philosophy and religion"
section"Legendary creatures"
Radial velocity
level5
topic"Physical sciences"
sublist"Astronomy"
section"Basics"
Recessional velocity
level5
topic"Physical sciences"
sublist"Astronomy"
section"Basics"
Radio astronomy
level5
topic"Physical sciences"
sublist"Astronomy"
section"Radio astronomy"
Radio spectrum pollution
level5
topic"Physical sciences"
sublist"Astronomy"
section"Radio astronomy"
Rings of Jupiter
level5
topic"Physical sciences"
sublist"Astronomy"
section"Solar System"
Rings of Saturn
level5
topic"Physical sciences"
sublist"Astronomy"
section"Solar System"
Rhea (moon)
level5
topic"Physical sciences"
sublist"Astronomy"
section"Solar System"
Rings of Uranus
level5
topic"Physical sciences"
sublist"Astronomy"
section"Solar System"
Rings of Neptune
level5
topic"Physical sciences"
sublist"Astronomy"
section"Solar System"
Regulus
level5
topic"Physical sciences"
sublist"Astronomy"
section"Notable stars"
Rho Ophiuchi cloud complex
level5
topic"Physical sciences"
sublist"Astronomy"
section"Notable nebulae"
Rosette Nebula
level5
topic"Physical sciences"
sublist"Astronomy"
section"Notable nebulae"
R136
level5
topic"Physical sciences"
sublist"Astronomy"
section"Notable star clusters"
Roche limit
level5
topic"Physical sciences"
sublist"Astronomy"
section"Celestial mechanics"
Right ascension
level5
topic"Physical sciences"
sublist"Astronomy"
section"Celestial sphere: General"
Reticulum
level5
topic"Physical sciences"
sublist"Astronomy"
section"Other"
Rogue planet
level5
topic"Physical sciences"
sublist"Astronomy"
section"Planetary science"
Rare Earth hypothesis
level5
topic"Physical sciences"
sublist"Astronomy"
section"Planetary science"
RR Lyrae variable
level5
topic"Physical sciences"
sublist"Astronomy"
section"Stellar astronomy"
Roche lobe
level5
topic"Physical sciences"
sublist"Astronomy"
section"Stellar astronomy"
Radio-quiet neutron star
level5
topic"Physical sciences"
sublist"Astronomy"
section"Stellar astronomy"
Red dwarf
level5
topic"Physical sciences"
sublist"Astronomy"
section"Stellar astronomy"
Red supergiant
level5
topic"Physical sciences"
sublist"Astronomy"
section"Stellar astronomy"
Red-giant branch
level5
topic"Physical sciences"
sublist"Astronomy"
section"Stellar astronomy"
R-process
level5
topic"Physical sciences"
sublist"Astronomy"
section"Stellar astronomy"
Radiative zone
level5
topic"Physical sciences"
sublist"Astronomy"
section"Stellar astronomy"
Reflection nebula
level5
topic"Physical sciences"
sublist"Astronomy"
section"Basics_2"
Ring galaxy
level5
topic"Physical sciences"
sublist"Astronomy"
section"Galaxy classification"
Recombination (cosmology)
level5
topic"Physical sciences"
sublist"Astronomy"
section"Physical cosmology"
Reionization
level5
topic"Physical sciences"
sublist"Astronomy"
section"Physical cosmology"
Reproducibility
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Science basics"
Replication crisis
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Science basics"
Rod (unit)
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"English"
Rood (unit)
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Area"
Reyn
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Viscosity"
Radian per second
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Angular velocity"
Revolutions per minute
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Angular velocity"
Relative density
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Ratio"
Rankine scale
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Temperature"
Roentgen (unit)
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Exposure"
Rad (radiation unit)
level5
topic"Physical sciences"
sublist"Basics and measurement"
section"Absorbed dose"
Regulation of chemicals
level5
topic"Physical sciences"
sublist"Chemistry"
section"Basics: General"
Relative atomic mass
level5
topic"Physical sciences"
sublist"Chemistry"
section"Periodic table"
Reactivity (chemistry)
level5
topic"Physical sciences"
sublist"Chemistry"
section"Reaction"
Reagent
level5
topic"Physical sciences"
sublist"Chemistry"
section"Reaction"
Ribbon diagram
level5
topic"Physical sciences"
sublist"Chemistry"
section"Substance"
Rutherfordium
level5
topic"Physical sciences"
sublist"Chemistry"
section"Group 4"
Roentgenium
level5
topic"Physical sciences"
sublist"Chemistry"
section"Group 11"
Rare-earth element
level5
topic"Physical sciences"
sublist"Chemistry"
section"Lanthanides"
Rare-earth barium copper oxide
level5
topic"Physical sciences"
sublist"Chemistry"
section"Ceramic compounds"
Resin
level5
topic"Physical sciences"
sublist"Chemistry"
section"Terpenes and terpenoids"
Rosin
level5
topic"Physical sciences"
sublist"Chemistry"
section"Terpenes and terpenoids"
Radioanalytical chemistry
level5
topic"Physical sciences"
sublist"Chemistry"
section"Basics_2"
Redox indicator
level5
topic"Physical sciences"
sublist"Chemistry"
section"Chemical methods"
Raman spectroscopy
level5
topic"Physical sciences"
sublist"Chemistry"
section"Spectroscopy"
Reaction intermediate
level5
topic"Physical sciences"
sublist"Chemistry"
section"Basics_3"
Reversible reaction
level5
topic"Physical sciences"
sublist"Chemistry"
section"Basics_3"
Radical polymerization
level5
topic"Physical sciences"
sublist"Chemistry"
section"Organic reactions"
Ring-opening polymerization
level5
topic"Physical sciences"
sublist"Chemistry"
section"Organic reactions"
Rearrangement reaction
level5
topic"Physical sciences"
sublist"Chemistry"
section"Organic reactions"
Rust
level5
topic"Physical sciences"
sublist"Chemistry"
section"Redox reactions"
Reducing agent
level5
topic"Physical sciences"
sublist"Chemistry"
section"Redox reactions"
Retrosynthetic analysis
level5
topic"Physical sciences"
sublist"Chemistry"
section"Synthetic strategies"
Random column packing
level5
topic"Physical sciences"
sublist"Chemistry"
section"Phase separations"
Reverse osmosis
level5
topic"Physical sciences"
sublist"Chemistry"
section"Other separations"
Recrystallization (chemistry)
level5
topic"Physical sciences"
sublist"Chemistry"
section"Other separations"
Resonance (chemistry)
level5
topic"Physical sciences"
sublist"Chemistry"
section"Bond structure"
Reduction potential
level5
topic"Physical sciences"
sublist"Chemistry"
section"Electrochemistry"
Reactivity series
level5
topic"Physical sciences"
sublist"Chemistry"
section"Electrochemistry"
Rate equation
level5
topic"Physical sciences"
sublist"Chemistry"
section"Kinetics"
Rate-determining step
level5
topic"Physical sciences"
sublist"Chemistry"
section"Kinetics"
Reaction rate
level5
topic"Physical sciences"
sublist"Chemistry"
section"Kinetics"
Reaction rate constant
level5
topic"Physical sciences"
sublist"Chemistry"
section"Kinetics"
Reaction coordinate
level5
topic"Physical sciences"
sublist"Chemistry"
section"Kinetics"
Racemic mixture
level5
topic"Physical sciences"
sublist"Chemistry"
section"Stereochemistry"
Racemization
level5
topic"Physical sciences"
sublist"Chemistry"
section"Stereochemistry"
Ring flip
level5
topic"Physical sciences"
sublist"Chemistry"
section"Stereochemistry"
Reaction quotient
level5
topic"Physical sciences"
sublist"Chemistry"
section"Thermodynamics"
Riparian zone
level5
topic"Physical sciences"
sublist"Earth science"
section"Wetlands"
Radiative forcing
level5
topic"Physical sciences"
sublist"Earth science"
section"Climate change"
Rain and snow mixed
level5
topic"Physical sciences"
sublist"Earth science"
section"Precipitation"
Rain shadow
level5
topic"Physical sciences"
sublist"Earth science"
section"Precipitation"
Remineralisation
level5
topic"Physical sciences"
sublist"Earth science"
section"Geochemistry"
Radium and radon in the environment
level5
topic"Physical sciences"
sublist"Earth science"
section"Geochemistry"
Recrystallization (geology)
level5
topic"Physical sciences"
sublist"Earth science"
section"Geochemistry"
Richter scale
level5
topic"Physical sciences"
sublist"Earth science"
section"Seismology"
Radiometric dating
level5
topic"Physical sciences"
sublist"Earth science"
section"Geochronology"
Rubidium–strontium dating
level5
topic"Physical sciences"
sublist"Earth science"
section"Geochronology"
Relative dating
level5
topic"Physical sciences"
sublist"Earth science"
section"Geochronology"
Rodinia
level5
topic"Physical sciences"
sublist"Earth science"
section"Paleogeography"
Rheic Ocean
level5
topic"Physical sciences"
sublist"Earth science"
section"Paleogeography"
Rhodochrosite
level5
topic"Physical sciences"
sublist"Earth science"
section"Minerals"
Rutile
level5
topic"Physical sciences"
sublist"Earth science"
section"Minerals"
Realgar
level5
topic"Physical sciences"
sublist"Earth science"
section"Minerals"
Rhyolite
level5
topic"Physical sciences"
sublist"Earth science"
section"Petrology"
Ripple marks
level5
topic"Physical sciences"
sublist"Earth science"
section"Sedimentology"
Roundness (geology)
level5
topic"Physical sciences"
sublist"Earth science"
section"Sedimentology"
Regolith
level5
topic"Physical sciences"
sublist"Earth science"
section"Sedimentology"
Rift
level5
topic"Physical sciences"
sublist"Earth science"
section"Tectonics"
Rockslide
level5
topic"Physical sciences"
sublist"Earth science"
section"Geomorphology: General"
Rift valley
level5
topic"Physical sciences"
sublist"Earth science"
section"Landforms: General"
Ravine
level5
topic"Physical sciences"
sublist"Earth science"
section"Landforms: General"
River morphology
level5
topic"Physical sciences"
sublist"Earth science"
section"Fluvial landforms"
Ridge
level5
topic"Physical sciences"
sublist"Earth science"
section"Montane landforms"
River island
level5
topic"Physical sciences"
sublist"Earth science"
section"Oceanic and coastal landforms"
Reef
level5
topic"Physical sciences"
sublist"Earth science"
section"Oceanic and coastal landforms"
Rip current
level5
topic"Physical sciences"
sublist"Earth science"
section"Oceanography"
Rogue wave
level5
topic"Physical sciences"
sublist"Earth science"
section"Oceanography"
Rift lake
level5
topic"Physical sciences"
sublist"Earth science"
section"Hydrology"
River mouth
level5
topic"Physical sciences"
sublist"Earth science"
section"Hydrology"
River ecosystem
level5
topic"Physical sciences"
sublist"Earth science"
section"Hydrology"
River source
level5
topic"Physical sciences"
sublist"Earth science"
section"Hydrology"
Renormalization
level5
topic"Physical sciences"
sublist"Physics"
section"Physics basics: General"
Rutherford model
level5
topic"Physical sciences"
sublist"Physics"
section"Atomic physics"
Rydberg constant
level5
topic"Physical sciences"
sublist"Physics"
section"Atomic physics"
Rydberg formula
level5
topic"Physical sciences"
sublist"Physics"
section"Atomic physics"
Rigid rotor
level5
topic"Physical sciences"
sublist"Physics"
section"Molecular physics"
Rotational–vibrational spectroscopy
level5
topic"Physical sciences"
sublist"Physics"
section"Molecular physics"
Rotational spectroscopy
level5
topic"Physical sciences"
sublist"Physics"
section"Molecular physics"
Ray (optics)
level5
topic"Physical sciences"
sublist"Physics"
section"Optics"
Reflection coefficient
level5
topic"Physical sciences"
sublist"Physics"
section"Optics"
Rayleigh scattering
level5
topic"Physical sciences"
sublist"Physics"
section"Optics"
RGB color spaces
level5
topic"Physical sciences"
sublist"Physics"
section"Basics"
Rec. 601
level5
topic"Physical sciences"
sublist"Physics"
section"Basics"
Rec. 709
level5
topic"Physical sciences"
sublist"Physics"
section"Basics"
Rec. 2020
level5
topic"Physical sciences"
sublist"Physics"
section"Basics"
Rec. 2100
level5
topic"Physical sciences"
sublist"Physics"
section"Basics"
RGBA color model
level5
topic"Physical sciences"
sublist"Physics"
section"Basics"
RYB color model
level5
topic"Physical sciences"
sublist"Physics"
section"Basics"
Rose (color)
level5
topic"Physical sciences"
sublist"Physics"
section"Colors"
Ruby (color)
level5
topic"Physical sciences"
sublist"Physics"
section"Colors"
Rock magnetism
level5
topic"Physical sciences"
sublist"Physics"
section"Basics_2"
Reciprocal lattice
level5
topic"Physical sciences"
sublist"Physics"
section"Crystallography"
Retarded time
level5
topic"Physical sciences"
sublist"Physics"
section"Electrodynamics"
Right-hand rule
level5
topic"Physical sciences"
sublist"Physics"
section"Electrodynamics"
Radiative transfer
level5
topic"Physical sciences"
sublist"Physics"
section"Electromagnetic radiation"
Radiant flux
level5
topic"Physical sciences"
sublist"Physics"
section"Electromagnetic radiation"
Radiance
level5
topic"Physical sciences"
sublist"Physics"
section"Electromagnetic radiation"
Radiometry
level5
topic"Physical sciences"
sublist"Physics"
section"Electromagnetic radiation"
Rotation operator (quantum mechanics)
level5
topic"Physical sciences"
sublist"Physics"
section"Quantum mechanics"
Relativistic quantum mechanics
level5
topic"Physical sciences"
sublist"Physics"
section"Quantum mechanics"
Reduced mass
level5
topic"Physical sciences"
sublist"Physics"
section"Classical mechanics"
Rolling resistance
level5
topic"Physical sciences"
sublist"Physics"
section"Classical mechanics"
Rolling
level5
topic"Physical sciences"
sublist"Physics"
section"Classical mechanics"
Restoring force
level5
topic"Physical sciences"
sublist"Physics"
section"Classical mechanics"
Radiation pressure
level5
topic"Physical sciences"
sublist"Physics"
section"Classical mechanics"
Resultant force
level5
topic"Physical sciences"
sublist"Physics"
section"Classical mechanics"
Relative velocity
level5
topic"Physical sciences"
sublist"Physics"
section"Classical mechanics"
Reaction (physics)
level5
topic"Physical sciences"
sublist"Physics"
section"Classical mechanics"
Rheology
level5
topic"Physical sciences"
sublist"Physics"
section"Fluid mechanics"
Rayleigh problem
level5
topic"Physical sciences"
sublist"Physics"
section"Fluid mechanics"
Rigid body
level5
topic"Physical sciences"
sublist"Physics"
section"Solid mechanics"
Rigid body dynamics
level5
topic"Physical sciences"
sublist"Physics"
section"Solid mechanics"
Radioactive source
level5
topic"Physical sciences"
sublist"Physics"
section"Nuclear physics"
Relativistic Heavy Ion Collider
level5
topic"Physical sciences"
sublist"Physics"
section"Devices"
Rapidity
level5
topic"Physical sciences"
sublist"Physics"
section"Theory of relativity"
Relativity of simultaneity
level5
topic"Physical sciences"
sublist"Physics"
section"Theory of relativity"
Rankine cycle
level5
topic"Physical sciences"
sublist"Physics"
section"Thermodynamics"
Redlich–Kwong equation of state
level5
topic"Physical sciences"
sublist"Physics"
section"Thermodynamics"
Reversible process (thermodynamics)
level5
topic"Physical sciences"
sublist"Physics"
section"Thermodynamics"
Relativistic Doppler effect
level5
topic"Physical sciences"
sublist"Physics"
section"Waves"
Radio frequency
level5
topic"Physical sciences"
sublist"Physics"
section"Waves"
Rumor
level5
topic"Society and social sciences"
sublist"Culture"
section"Communication"
Rave
level5
topic"Society and social sciences"
sublist"Culture"
section"Festivals, holidays, and observances"
Remembrance Day
level5
topic"Society and social sciences"
sublist"Culture"
section"Specific holidays and festivals"
Royal Library, Denmark
level5
topic"Society and social sciences"
sublist"Culture"
section"Europe"
Russian State Library
level5
topic"Society and social sciences"
sublist"Culture"
section"Europe"
Rice University
level5
topic"Society and social sciences"
sublist"Culture"
section"United States"
Rutgers University
level5
topic"Society and social sciences"
sublist"Culture"
section"Big Ten"
RWTH Aachen University
level5
topic"Society and social sciences"
sublist"Culture"
section"TU9"
Russian Academy of Sciences
level5
topic"Society and social sciences"
sublist"Culture"
section"Russia"
Ryukyuan people
level5
topic"Society and social sciences"
sublist"Culture"
section"Asia_3"
Reduplication
level5
topic"Society and social sciences"
sublist"Culture"
section"Grammar"
Rhotic consonant
level5
topic"Society and social sciences"
sublist"Culture"
section"Descriptive linguistics"
Register (sociolinguistics)
level5
topic"Society and social sciences"
sublist"Culture"
section"Descriptive linguistics"
Reference
level5
topic"Society and social sciences"
sublist"Culture"
section"Theoretical linguistics"
Romanization
level5
topic"Society and social sciences"
sublist"Culture"
section"Alphabets and writing systems"
Romanization of Arabic
level5
topic"Society and social sciences"
sublist"Culture"
section"Alphabets and writing systems"
Romanization of Chinese
level5
topic"Society and social sciences"
sublist"Culture"
section"Alphabets and writing systems"
Romanization of Japanese
level5
topic"Society and social sciences"
sublist"Culture"
section"Alphabets and writing systems"
Rongorongo
level5
topic"Society and social sciences"
sublist"Culture"
section"Alphabets and writing systems"
Romani language
level5
topic"Society and social sciences"
sublist"Culture"
section"Indo-Aryan languages"
Regional Italian
level5
topic"Society and social sciences"
sublist"Culture"
section"Romance languages"
Romansh language
level5
topic"Society and social sciences"
sublist"Culture"
section"Romance languages"
Rwanda-Rundi
level5
topic"Society and social sciences"
sublist"Culture"
section"Niger–Congo languages"
Rhoticity in English
level5
topic"Society and social sciences"
sublist"Culture"
section"The English language"
Rhyming slang
level5
topic"Society and social sciences"
sublist"Culture"
section"The English language"
Received Pronunciation
level5
topic"Society and social sciences"
sublist"Culture"
section"The English language"
Residual media
level5
topic"Society and social sciences"
sublist"Culture"
section"Mass media"
Reader's Digest
level5
topic"Society and social sciences"
sublist"Culture"
section"Specific magazines"
Rolling Stone
level5
topic"Society and social sciences"
sublist"Culture"
section"Specific magazines"
Reuters
level5
topic"Society and social sciences"
sublist"Culture"
section"News agencies"
RIA Novosti
level5
topic"Society and social sciences"
sublist"Culture"
section"News agencies"
Radio program
level5
topic"Society and social sciences"
sublist"Culture"
section"Radio"
Radio network
level5
topic"Society and social sciences"
sublist"Culture"
section"Radio"
Radio personality
level5
topic"Society and social sciences"
sublist"Culture"
section"Radio"
Radio drama
level5
topic"Society and social sciences"
sublist"Culture"
section"Genres"
RTHK
level5
topic"Society and social sciences"
sublist"Culture"
section"Networks"
Russia-1
level5
topic"Society and social sciences"
sublist"Culture"
section"Russian TV networks"
RT (TV network)
level5
topic"Society and social sciences"
sublist"Culture"
section"Russian TV networks"
Ramayan (1987 TV series)
level5
topic"Society and social sciences"
sublist"Culture"
section"India_3"
Rowan & Martin's Laugh-In
level5
topic"Society and social sciences"
sublist"Culture"
section"1960–1979"
Roots (1977 miniseries)
level5
topic"Society and social sciences"
sublist"Culture"
section"1960–1979"
Roseanne
level5
topic"Society and social sciences"
sublist"Culture"
section"1980–1999"
Rugrats
level5
topic"Society and social sciences"
sublist"Culture"
section"1980–1999"
Rick and Morty
level5
topic"Society and social sciences"
sublist"Culture"
section"Post-1999"
Reserve currency
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Currency"
Russian ruble
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Specific currencies"
Retail banking
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Banking and financing"
Rate of return
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Banking and financing"
Reinsurance
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Insurance"
Real property
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Business: General"
Real estate development
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Industry"
Recruitment
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Employment"
Résumé
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Employment"
Remote work
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Employment"
Revenue service
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Taxation"
Receptionist
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Common trades and professions"
RENGO
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Individual trade unions"
Rational choice model
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Economics_2"
Recession
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Economics_2"
Resource
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Economics_2"
Risk
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Economics_2"
Renault
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Europe_2"
Rio Tinto (corporation)
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Mining companies"
Ryanair
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Europe_3"
Renfe
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Rail operators"
Russian Railways
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Rail operators"
Restorative justice
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Dispute resolution"
Right to property
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Rights"
Reproductive rights
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Rights"
Right of self-defense
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Rights"
Right to a fair trial
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Rights"
Roman law
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Europe_4"
Regulation
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Administrative law"
Regulatory agency
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Administrative law"
Regulatory compliance
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Administrative law"
Rulemaking
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Administrative law"
Relevance (law)
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Common law"
Ratification
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Constitutional law"
Royal prerogative
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Constitutional law"
Repeal
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Statutory law"
Resolution (law)
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Statutory law"
Revenge porn
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Crimes against the person"
Right to silence
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Criminal procedure"
Royal charter
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Documents"
Roe v. Wade
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"United States"
RSPCA
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Non-governmental organizations"
Reporters Without Borders
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Humanitarian organizations"
Rashtriya Swayamsevak Sangh
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"National organizations"
Royal Academy of Arts
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"National organizations"
Royal Society
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"National organizations"
Republican Party (United States)
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Political parties"
Russian mafia
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Organized crime groups"
Rollback
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Politics"
Representative democracy
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Forms of government"
Right-wing politics
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Ideology and political theory"
Republicanism
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Ideology and political theory"
Reactionary
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Ideology and political theory"
Resource war
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Wars by type"
Rebellion
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Wars by type"
Ritual warfare
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Wars by type"
Russian Armed Forces
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Military forces"
Rear admiral
level5
topic"Society and social sciences"
sublist"Politics and economics"
section"Military ranks"
Rationalization (psychology)
level5
topic"Society and social sciences"
sublist"Social studies"
section"Concepts"
Regret
level5
topic"Society and social sciences"
sublist"Social studies"
section"Emotions and traits"
Resentment
level5
topic"Society and social sciences"
sublist"Social studies"
section"Interpersonal relations"
Religious organization
level5
topic"Society and social sciences"
sublist"Social studies"
section"Groups"
Rescue
level5
topic"Society and social sciences"
sublist"Social studies"
section"Services and institutions"
Relative deprivation
level5
topic"Society and social sciences"
sublist"Social studies"
section"Issues"
Rejection of evolution by religious groups
level5
topic"Society and social sciences"
sublist"Social studies"
section"Issues"
Reformism (historical)
level5
topic"Society and social sciences"
sublist"Social studies"
section"Issues"
Radical feminism
level5
topic"Society and social sciences"
sublist"Social studies"
section"Social status"
Reputation
level5
topic"Society and social sciences"
sublist"Social studies"
section"Social status"
Role
level5
topic"Society and social sciences"
sublist"Social studies"
section"Social status"
Role model
level5
topic"Society and social sciences"
sublist"Social studies"
section"Social status"
Ruling class
level5
topic"Society and social sciences"
sublist"Social studies"
section"Social classes"
Reverse discrimination
level5
topic"Society and social sciences"
sublist"Social studies"
section"Discrimination"
Religious discrimination
level5
topic"Society and social sciences"
sublist"Social studies"
section"Discrimination"
Reflexivity (social theory)
level5
topic"Society and social sciences"
sublist"Social studies"
section"Sociology"
Research and development
level5
topic"Technology"
section"General"
Risk management
level5
topic"Technology"
section"Basics"
Requirements analysis
level5
topic"Technology"
section"Basics"
Reverse engineering
level5
topic"Technology"
section"Basics"
Radio-frequency engineering
level5
topic"Technology"
section"Disciplines"
Railway engineering
level5
topic"Technology"
section"Disciplines"
Rainfed agriculture
level5
topic"Technology"
section"Agriculture_2"
Regenerative agriculture
level5
topic"Technology"
section"Agriculture_2"
Rodenticide
level5
topic"Technology"
section"Pest and disease control"
Raised field
level5
topic"Technology"
section"Buildings and infrastructure"
Ranch
level5
topic"Technology"
section"Buildings and infrastructure"
Recombinant DNA
level5
topic"Technology"
section"Biotechnology"
Real-time computing
level5
topic"Technology"
section"Computer science"
Ransomware
level5
topic"Technology"
section"Computer security"
RSA (cryptosystem)
level5
topic"Technology"
section"Computer security"
Reboot
level5
topic"Technology"
section"Computer hardware"
Real-time clock
level5
topic"Technology"
section"Computer hardware"
Real-time operating system
level5
topic"Technology"
section"Operating systems"
RAID
level5
topic"Technology"
section"Data storage and memory"
RAR (file format)
level5
topic"Technology"
section"File format"
Routing
level5
topic"Technology"
section"Networks"
Reverse proxy
level5
topic"Technology"
section"Networks"
Rotten Tomatoes
level5
topic"Technology"
section"Utility"
Reddit
level5
topic"Technology"
section"Social network and blogging"
Reusability
level5
topic"Technology"
section"Software development: General"
Recursion (computer science)
level5
topic"Technology"
section"Software development: General"
Regular expression
level5
topic"Technology"
section"Software development: General"
R (programming language)
level5
topic"Technology"
section"Programming languages"
Ruby (programming language)
level5
topic"Technology"
section"Scripting languages"
Radio receiver
level5
topic"Technology"
section"Other media and communication technology"
Raspberry Pi
level5
topic"Technology"
section"Specific hardware"
Rotary switch
level5
topic"Technology"
section"Components"
Rectifier
level5
topic"Technology"
section"Functional circuits"
Repowering
level5
topic"Technology"
section"Concepts"
Residual-current device
level5
topic"Technology"
section"Electrical protective devices"
Respirator
level5
topic"Technology"
section"Food, water and health"
Rocker box
level5
topic"Technology"
section"Metallurgy"
Rayon
level5
topic"Technology"
section"Fabrics and fibers"
Ring spinning
level5
topic"Technology"
section"Spinning"
Ready-mix concrete
level5
topic"Technology"
section"Building materials"
Reinforced concrete
level5
topic"Technology"
section"Building materials"
Rebar
level5
topic"Technology"
section"Building materials"
Roman concrete
level5
topic"Technology"
section"Building materials"
Rammed earth
level5
topic"Technology"
section"Building materials"
Roof shingle
level5
topic"Technology"
section"Building materials"
Remediation of contaminated sites with cement
level5
topic"Technology"
section"Environmental remediation"
Rogun Dam
level5
topic"Technology"
section"Dams"
Rainbow Bridge (Niagara Falls)
level5
topic"Technology"
section"Bridges"
Rainbow Bridge (Tokyo)
level5
topic"Technology"
section"Bridges"
Rialto Bridge
level5
topic"Technology"
section"Bridges"
Robotic arm
level5
topic"Technology"
section"Machinery and tools: General"
Reciprocating engine
level5
topic"Technology"
section"Engines"
Rivet gun
level5
topic"Technology"
section"Hydraulics and pneumatics"
Reaper
level5
topic"Technology"
section"Farm and garden machinery"
Reaper-binder
level5
topic"Technology"
section"Farm and garden machinery"
Rice cooker
level5
topic"Technology"
section"Household appliances"
Rack and pinion
level5
topic"Technology"
section"Simple mechanisms"
Ratchet (device)
level5
topic"Technology"
section"Simple mechanisms"
Rod end bearing
level5
topic"Technology"
section"Simple mechanisms"
Roller (agricultural tool)
level5
topic"Technology"
section"Agricultural tools"
Reticle
level5
topic"Technology"
section"Surveying tools"
Reflex hammer
level5
topic"Technology"
section"Devices"
Retainer (orthodontics)
level5
topic"Technology"
section"Equipment"
Retractor (medicine)
level5
topic"Technology"
section"Surgical instruments"
Reactive armour
level5
topic"Technology"
section"Armour"
Ravelin
level5
topic"Technology"
section"Fortification"
Rampart (fortification)
level5
topic"Technology"
section"Fortification"
Ranged weapon
level5
topic"Technology"
section"Ranged weapons"
Recurve bow
level5
topic"Technology"
section"Archery"
Repeating crossbow
level5
topic"Technology"
section"Archery"
Railgun
level5
topic"Technology"
section"Artillery"
Revolver
level5
topic"Technology"
section"Firearms"
Rotary cannon
level5
topic"Technology"
section"Firearms"
Repeating firearm
level5
topic"Technology"
section"Mechanisms_2"
Rifling
level5
topic"Technology"
section"Mechanisms_2"
Rocket-propelled grenade
level5
topic"Technology"
section"Missiles"
Reconnaissance aircraft
level5
topic"Technology"
section"Military aviation"
Rockwell B-1 Lancer
level5
topic"Technology"
section"Specific aircraft"
Rubber bullet
level5
topic"Technology"
section"Less-lethal weapons"
Ruby laser
level5
topic"Technology"
section"Lasers"
Rangefinder camera
level5
topic"Technology"
section"Photography"
Reflecting telescope
level5
topic"Technology"
section"Telescope"
Ritchey–Chrétien telescope
level5
topic"Technology"
section"Telescope"
Refracting telescope
level5
topic"Technology"
section"Telescope"
ROSAT
level5
topic"Technology"
section"Space-based observatories"
Rover (space exploration)
level5
topic"Technology"
section"Rovers"
Rail yard
level5
topic"Technology"
section"Concepts of ground transport"
Rest area
level5
topic"Technology"
section"Concepts of ground transport"
Railway platform
level5
topic"Technology"
section"Concepts of ground transport"
Road junction
level5
topic"Technology"
section"Road infrastructure"
Rat bike
level5
topic"Technology"
section"Motorized road transport"
Railway electrification
level5
topic"Technology"
section"Rail and cable transport"
Railroad car
level5
topic"Technology"
section"Rail and cable transport"
Rolling stock
level5
topic"Technology"
section"Rail and cable transport"
Rail freight transport
level5
topic"Technology"
section"Rail and cable transport"
Recumbent bicycle
level5
topic"Technology"
section"Human-powered transport"
Road roller
level5
topic"Technology"
section"Specific-purpose transportation"
Raft
level5
topic"Technology"
section"Naval transport"
Remotely operated underwater vehicle
level5
topic"Technology"
section"Naval transport"
Runway
level5
topic"Technology"
section"Concepts of aviation"
Rigid airship
level5
topic"Technology"
section"Types of aircraft"
Rotorcraft
level5
topic"Technology"
section"Types of aircraft"
Radial engine
level5
topic"Technology"
section"Aircraft components"
Roman roads
level5
topic"Technology"
section"Ground transportation networks"
Rio de Janeiro Metro
level5
topic"Technology"
section"Brazil"
Réseau Express Régional
level5
topic"Technology"
section"France"
Rome Metro
level5
topic"Technology"
section"Italy"
Rotterdam Metro
level5
topic"Technology"
section"Netherlands"