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Wikipedia:Picture of the day/July 2004

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A monthly archive of the English Wikipedia's pictures of the day

These featured pictures have previously appeared (or will appear) as picture of the day (POTD) on the Main Page, as scheduled below. You can add the automatically updating picture of the day to your userpage or talk page using {{Pic of the day}} (version with blurb) or {{POTD}} (version without blurb). For instructions on how to make custom POTD layouts, see Wikipedia:Picture of the day.

National Gallery National Gallery, Saturday 31 July, 2004
The National Gallery at night, illuminated for an event to promote the launch of a Pepsi commercial. The National Gallery in London is an art gallery designed by William Wilkins. It holds part of the National Collection, particularly Western European art from 1250 to 1900. The collection of 2300 paintings belongs to the British public. Photo credit: Michael Reeve

Blue Sky Weather lore, Friday 30 July, 2004
Weather lore, the informal folklore related to the prediction of the weather, suggests that the cumulus humilis clouds in this sky indicate a good day ahead. Such clouds show there is very little convection in the lower atmosphere, and the fact that it is well-formed indicates light winds at low levels. There is no cloud aloft, and thus no moisture or stable conditions or both. The cumulus congestus on the horizon suggests showers may be possible three or four hours from now, at the earliest, but chances are good it will remain a pleasant day through until the evening. Photo credit: Denni Windrim

Darlingtonia Darlingtonia, Thursday 29 July, 2004
Darlingtonia (Darlingtonia californica), also called the California Pitcher plant or Cobra Lily, is a carnivorous plant in the family Sarraceniaceae. Darlingtonia is native to California and Oregon and grows in bogs and seeps. The name Cobra Lily is from the resemblance of the tubular leaf to a rearing Cobra, complete with "fangs". The genus Darlingtonia is monotypic. Photo credit: Daniel Keshet

Antartic icefish larvae Icefish, Wednesday 28 July, 2004
Icefish are a type of Antarctic fish belonging to various families, including the Channichthyidae family. They have no haemoglobin and their blood is transparent. They feed on krill, copepods, and other fish. Icefish rely on well-oxygenated water and absorb oxygen directly through the skin as they lack red blood cells. Photo credit: Uwe Kils

Mount Cook Mount Cook, Tuesday 27 July, 2004
Mount Cook, a peak in the Southern Alps is the highest mountain in New Zealand. Mount Cook is also known as Aoraki, meaning "Cloud Piercer" in the Kai Tahu dialect of the Maori language. The mountain is located within the Aoraki/Mount Cook National Park and was formally declared one of the United Nations World Heritage Parks in 1953. Photo credit: User:Dynabee

Tawaret Tawaret, Monday 26 July, 2004
Tawaret was a popular deity in ancient Egyptian mythology. She was a household deity who protected women during pregnancy and childbirth, in conjunction with another deity, Bes. Tawaret was depicted as an amalgam of human and animal with the head of a hippopotamus,the arms and legs of a lion, the back and tail of a crocodile, and the breasts and stomach of a pregnant woman. Photo credit: ChrisO

Pin tumbler lock Pin tumbler lock, Sunday 25 July, 2004
The pin tumbler lock is a lock mechanism that utilizes a group of pins of varying lengths to prevent opening the lock without the correct key. Pin tumblers are most commonly employed in cylinder locks, but may also be found in tubular or radial locks. When the correct key is inserted, the gaps between the key pins (red) and driver pins (blue) align with the edge of the plug (yellow). Photo credit: Eric Pierce

Four-stroke cycle Four-stroke cycle, Saturday 24 July, 2004
The four-stroke cycle of an internal combustion engine is the cycle most commonly used for automotive and industrial purposes today, including cars, trucks, and generators. The cycle was invented by Nikolaus Otto in 1876, and is also called the Otto cycle. The cycle is characterized by four strokes, or straight movements in a single direction, of the piston. Photo credit: Eric Pierce

Anatomical directions and planes shown on a kangaroo Zootomical terms of location, Friday 23 July, 2004
Zootomical terms of location differ from from the terminology used in human anatomy. In animals, the head end is caled the "cranial end" and the tail end is the "caudal end". The side of the body normally oriented upwards is the "dorsal" side; the opposite side, typically the one closest to the ground when walking on all legs, swimming or flying, is the "ventral" side. Photo credit: Jonathan Merritt

Geisha Geisha, Thursday 22 July, 2004
Women dressed as geisha in Kyoto, Japan. They are wearing traditional kimonos and geta. Geisha (芸者) are traditional Japanese artist-entertainers. Geisha were very common in the 18th and 19th centuries, and are still in existence today, although their numbers are dwindling. The geisha tradition evolved from the taikomochi or hōkan, similar to court jesters. Geisha were traditionally trained from young childhood although modern geisha begin their training, which remains extremely long and difficult, at much older age. Photo credit: Michael Reeve

Water Buffalo from Indonesia Water Buffalo, Wednesday 21 July, 2004
The Water Buffalo is a very large ungulate. It probably survives in the wild in India, Nepal, Bhutan and Thailand; is very widespread as a domestic animal in Asia, South America. North Africa and Europe; and is feral in northern Australia. Wild-living populations of Water Buffalo also exist in much of South-east Asia but their origin is uncertain: they may be the descendants of wild Water Buffalo, formerly domesticated ferals, or a mixture of both. The population of wild Water Buffalo has become very sparse. Photo credit: Chmouel Boudjnah

Planet Mars Planet Mars, Tuesday 20 July, 2004
Mars, the fourth planet from the Sun, is named after the Roman god of war because of its blood red color. Mars has two small, oddly-shaped moons, Phobos and Deimos, named after the sons of the Greek god Ares. At some point in the future Phobos will be broken up by gravitational forces. The atmosphere on Mars is 95% carbon dioxide. In 2003 methane was also discovered in the atmosphere. Since methane is an unstable gas, this indicates that there must be (or have been within the last few hundred years) a source of the gas on the planet. Photo credit: NASA

Winter storm at Bryce Canyon Bryce Canyon National Park, 19 July, 2004
Bryce Canyon National Park is distinctive due to its unique geological structures, called hoodoos. In winter, most birds in the park migrate, but jays, ravens, nuthatches, eagles, and owls stay. The Mule Deer, Mountain Lion, and coyotes will migrate to lower elevations. Ground squirrels and marmots pass the winter in hibernation. Photo credit: National Park Service

Skyline Boulevard San Francisco Bay Area, Sunday 18 July, 2004
The Skyline Boulevard in the San Francisco Bay Area stretches through the Santa Cruz Mountains, here near Palo Alto, California. Three large cities dominate the San Francisco Bay Area; San Francisco, San Jose, and Oakland. As well as constituting one of the world's greatest metropolitan areas, the Bay Area includes some exceptional natural coastal and rural landscape. It includes significant national parks such as the Point Reyes National Seashore and a large number of state parks. Photo credit: Jawed Karim

Compound eye of a dragonfly Compound eye of a dragonfly, Saturday 17 July, 2004
A compound eye is a visual organ found in certain arthropods. The compound eye consists of between 12 and 1,000 ommatidia, little dark/bright sensors. The image perceived by the arthropod is "recalculated" from the numerous ommatidia which point in slightly different directions. In contrast to other eye types, there is no central lens or retina. Though the resulting image is poor in resolution, it can detect quick movements and, in some cases, the polarization of light. Dragonflies have about 30,000 facets to their compound eyes, giving them nearly a 360° field of vision. Photo credit: David L. Green

Left section of the ceiling of the Sistine Chapel after restoration. Sistine Chapel, Friday 16 July, 2004
The Sistine Chapel is a religious chapel and one of the most famous artistic treasures of the Vatican, built between 1475 and 1483, in the time of Pope Sixtus IV della Rovere. The chapel is known worldwide both for being the hall in which conclaves and other official ceremonies are held, including some papal coronations, and for having been decorated by Michelangelo. The subjects of the pictures were historical religious themes. Michelangelo was employed to paint only 12 figures, the Apostles, but when the work was finished there were more than 3,000. Photo credit: Adrian Pingstone using a source

Yellow-rattle Yellow rattle, Thursday 15 July
Yellow rattle (Rhinanthus minor) is a flowering plant in the family Scrophulariaceae. This family comprises 220-300 genera and 4000-4500 species. The family has a cosmopolitan distribution, with the majority found in temperate areas, including tropical mountains. Other members of the family include Digitalis, Linaria and Verbascum. Yellow rattle is a semi-parasitic plant that gains some of its nutrients from the roots of neighbouring plants. The name refers to the seedpods, which contain loose, rattling seeds when ripe. Photo credit: sannse

Painter's algorithm Painter's algorithm, Wednesday 14 July.
The painter's algorithm is one of the simplest solutions to the visibility problem in 3D computer graphics. When projecting a 3D scene onto a 2D plane, it is at some point necessary to decide which polygons are visible and which are hidden. The distant mountains are painted first, followed by the closer meadows; finally, the closest objects in this scene - the trees - are painted. For detailed scenes, the painter's algorthm generally proves to be a slow solution. Photo credit: Fredrik

View of Paris from Notre-Dame Notre-Dame, Tuesday 13 July.
View of Paris from the Notre-Dame showing the River Seine and the Eiffel Tower. The Notre-Dame de Paris is a gothic cathedral on the eastern half of the Île de la Cité in Paris, France. The cathedral is probably best known from Victor Hugo's novel, The Hunchback of Notre Dame, which was first published in 1831. Photo credit: Michael Reeve

Moon Moon, Monday 12 July.
The Moon is the only natural satellite of Earth. During the ancient period, it was not uncommon for cultures to believe that the Moon died each night, thus descending into the underworld. As late as the 1920s (or so), it was believed that the Moon might have a breathable atmosphere. In 1969, Neil Armstrong and Buzz Aldrin became the first humans to land on the Moon. Photo credit: Michael K. Fairbanks

Mad scientist caricature Mad scientist, Sunday 11 July.
A mad scientist is a stock character, often villainous, who appears in fiction as a scientist who is insane or eccentric. He is usually working with some utterly fictional technology in order to forward his evil schemes. Recent mad scientist depictions are often satirical and humorous, and some are actually protagonists, such as Dexter in the cartoon series Dexter's Laboratory. Photo credit: J.J. McCullough

Brisbane at night Brisbane, Saturday 10 July.
Brisbane at night. Brisbane is the capital city of the state of Queensland, Australia. It is situated in the southeast corner of Queensland and straddles the Brisbane River. The city is named after Sir Thomas Brisbane, a soldier and colonial administrator born in Ayrshire, Scotland. Photo credit: Gary Curtis

Lincoln statue Lincoln Memorial, Friday 9 July.
The focus of the Lincoln Memorial is this sculpture of Abraham Lincoln, seated. Daniel Chester French studied many of Mathew Brady's photographs of Lincoln, and depicted the president as worn and pensive, gazing eastwards down the Reflecting Pool at the capital's starkest emblem of the Union, the Washington Monument. One hand is clenched, the other open. Beneath his hands, the Roman fasces, symbols of the authority of the Republic, are sculpted in relief on the seat. Photo credit: Raul654

Chateau Wood Ypres 1917 Passchendaele, Thursday 8 July.
Soldiers of an Australian 4th Division field artillery brigade on a duckboard track passing through Chateau Wood, near Hooge in the Ypres salient, October 29, 1917. The photo was taken in the vicinity of the Battle of Passchendaele, also known as the Third Battle of Ypres, which was one of the major battles of World War I. Photo credit: James Francis Hurley

Madrid metro map Madrid metro, Wednesday 7 July.
The Madrid metro is the large metro system serving Madrid, the capital of Spain. It is one of the largest metro systems in the world, despite Madrid having a population of only four million. The metro opened in 1919 under the direction of the Compañía de Metro Alfonso XIII. Metro stations served as air raid shelters during the Spanish Civil War. Photo credit: Montrealais

Bolzano Bolzano, Tuesday 6 July.
Bolzano is a city in the Trentino-Alto Adige/Südtirol region of Northern Italy. It is the capital of the Italian/German/Ladin speaking Province of Bolzano-Bozen, officially trilingual. The province is almost completely mountainous, and is extended on the Adige valley north of the town of Salorno. Photo credit: Roland Wolf

The Remarkables and Lake Wakatipu Queenstown, New Zealand, Saturday 3 July.
The Remarkables and Lake Wakatipu from Queenstown. The Remarkables are a 540 acre mountain ski field located south of Queenstown, New Zealand. The other ski fields in Queenstown are Cardrona, Coronet Peak, and Treble Cone. Queenstown is a resort town in South Island and is surrounded by the Southern Alps. Photo credit: Tiles

Picture of the day archive

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