Wikipedia:Vital articles/Level/5/Physical sciences/Basics and measurement

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Biology Animals Plants Health Basics and measurement Astronomy Chemistry Earth science Physics Technology Mathematics

Vital articles is a list of subjects for which Wikipedia should have corresponding high-quality articles. It serves as a centralized watchlist to track the status of Wikipedia's most essential articles. This is one of the sub-lists of the fifty thousand article Vital articles/Level 5 and is currently under construction.

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The progress bar is auto-updated via category count, and the symbols and article counts are updated daily by User:cewbot. Please read the FAQ before modifying the article list.

Quota 350 articles.

Total 351 articles.

Class	#Articles
GA	4
B	35
C	133
LIST	1
FFA	1
DGA	3
Start	145
Stub	33

Science basics

This section contains 54 articles.

1. Science (Level 1)
2. Academic discipline
   1. Interdisciplinarity
3. Branches of science
   1. Formal science
      1. Data science
      2. Information science
   2. Natural science
4. Classification
   1. Categorization
   2. Taxonomy
5. Data
   1. Data analysis
   2. Data sharing
6. Error
7. Experiment (Level 4)
   1. Blinded experiment
8. Fringe science
9. Funding of science
10. Metascience
11. Nature (Level 3)
12. Observation (Level 4)
13. Open science
14. Peer review
    1. Scholarly peer review
15. Protoscience
16. Reproducibility
    1. Replication crisis
17. Research (Level 4)
    1. Basic research
    2. Field research (Level 4)
       1. Fieldnotes
    3. Laboratory (Level 4)
       1. Anechoic chamber
       2. Laboratory safety
       3. Medical laboratory
       4. Cleanroom
       5. Laboratory glassware
    4. Qualitative research
       1. Case study
    5. Quantitative research
18. Scientific community
19. Scientific evidence
20. Scientific law (Level 4)
21. Scientific method (Level 3)
22. Scientific misconduct
23. Scientific modelling (Level 4)
    1. Computational science
24. Scientific theory (Level 4)
25. Scientist
26. System (Level 4)
    1. Complex system
    2. Cybernetics (Level 4)
    3. Feedback

Measurement

This section contains 297 articles. This list contains units of measurement and articles on metrology. For the measured quantities, see the Science and Mathematics (Level 4) sections. For timekeeping and navigation, see the Everyday life (Level 4) and Technology (Level 4) sections. For measurement errors, see the Statistics (Level 4) section in Mathematics.

Measurement: General

This section contains 52 articles.

Basics

This section contains 11 articles.

1. Measurement (Level 3)
2. Accuracy and precision (Level 4)
3. Metrology (Level 4)
   1. Chronometry
4. Unit of measurement (Level 4)
   1. Conversion of units
5. Units of information
6. Dry measure
7. Dimensional analysis
   1. Buckingham π theorem
8. Telemetry

Measurement systems

This section contains 41 articles.

1. System of units of measurement
   1. Coherence (units of measurement)
2. Approximate measures
3. Apothecaries' system
4. Astronomical system of units
5. Avoirdupois
6. Biblical and Talmudic units of measurement
7. Chinese units of measurement
8. Cooking weights and measures
9. English units
   1. English brewery cask units
   2. English wine cask units
   3. Winchester measure
10. Imperial and US customary measurement systems
    1. Imperial units (Level 4)
    2. United States customary units (Level 4)
    3. Comparison of the imperial and US customary measurement systems
    4. Foot–pound–second system of units
    5. International yard and pound
11. Japanese units of measurement
12. Korean units of measurement
13. Metric system (Level 4)
    1. International System of Units (Level 3)
       1. Caesium standard
       2. International Prototype of the Kilogram
       3. SI base unit
    2. International System of Quantities
    3. MKS units
    4. Centimetre–gram–second system of units
    5. Metre–tonne–second system of units
    6. Gravitational metric system
14. Natural units (Level 4)
    1. Planck units (Level 4)
    2. Atomic units
    3. Geometrized unit system
    4. Gaussian units
    5. Heaviside–Lorentz units
    6. Stoney units
15. Troy weight
16. Typographic unit
17. Unit of account

Units of measurement

This section contains 245 articles.

Angle

This section contains 5 articles.

1. Degree (angle) (Level 4)
   1. Minute and second of arc
2. Radian (Level 4)
   1. Milliradian
3. Gradian

Solid angle

This section contains 2 articles.

1. Steradian (Level 4)
2. Square degree

Length

This section contains 44 articles.

Metric

This section contains 8 articles.

1. Metre (Level 4)
   1. Height above mean sea level
2. Kilometre
3. Centimetre
4. Millimetre
5. Micrometre
6. Nanometre
7. Angstrom

English

This section contains 16 articles.

1. Digit (unit)
2. Inch (Level 4)
3. Nail (unit)
4. Palm (unit)
5. Hand (unit)
6. Link (unit)
7. Foot (unit) (Level 4)
8. Cubit (Level 4)
9. Yard
10. Fathom
11. Rod (unit)
12. Chain (unit)
13. Furlong
14. Mile (Level 4)
15. Nautical mile (Level 4)
16. League (unit)

East Asian

This section contains 5 articles.

1. Chi (unit)
2. Cun (unit)
3. Ken (unit)
4. Li (unit)
5. Shaku (unit)

Astronomical

This section contains 5 articles.

1. Astronomical unit (Level 4)
2. Lunar distance
3. Solar radius
4. Light-year (Level 4)
5. Parsec (Level 4)

Typographic

This section contains 4 articles.

1. Em (typography)
2. En (typography)
3. Point (typography)
4. Pica (typography)

Other

This section contains 6 articles.

1. Biblical mile
2. Day's journey
3. Pace (unit)
4. Stadion (unit)
5. Verst
6. X unit

Area

This section contains 17 articles.

1. Square inch
2. Square foot
3. Square yard
4. Square metre
5. Rood (unit)
6. Acre (Level 4)
7. Oxgang
8. Virgate
9. Carucate
10. Hide (unit)
11. Knight's fee
12. Hundred (county division)
13. Hectare (Level 4)
14. Square kilometre
15. Square mile
16. Barn (unit)
17. Pyeong

Volume

This section contains 23 articles.

1. Cord (unit)
2. Cubic inch
3. Cubic foot
4. Acre-foot
5. Litre (Level 4)
6. Cubic metre
7. Cubic centimetre
8. Minim (unit)
9. Drop (unit)
10. Pinch (unit)
11. Teaspoon
12. Dessert spoon
13. Tablespoon
14. Fluid ounce
15. Gill (unit)
16. Cup (unit)
17. Pint
18. Quart
19. Barrel (unit)
20. Gallon (Level 4)
21. Ge (unit)
22. Koku

Volumetric flow rate

This section contains 1 article.

1. Cubic metre per second

Power

This section contains 3 articles.

1. Watt (Level 4)
2. Horsepower
3. Solar luminosity

Energy

This section contains 10 articles.

1. Joule (Level 4)
   1. Joule-second
2. British thermal unit
3. Calorie (Level 4)
4. Electronvolt (Level 4)
5. Erg
6. Foot-pound (energy)
7. Kilowatt-hour
8. TNT equivalent
9. Hartree

Pressure

This section contains 6 articles.

1. Pascal (unit) (Level 4)
2. Standard atmosphere (unit) (Level 4)
3. Bar (unit)
4. Torr
5. Millimetre of mercury
6. Pound per square inch

Momentum/impulse

This section contains 1 article.

1. Newton-second

Force

This section contains 4 articles.

1. Newton (unit) (Level 4)
2. Dyne
3. Kilogram-force
4. Pound (force)

Torque

This section contains 1 article.

1. Newton-metre

Viscosity

This section contains 2 articles.

1. Poise (unit)
2. Reyn

Mass and weight

This section contains 31 articles.

1. Solar mass
2. Jupiter mass
3. Earth mass
4. Dalton (unit) (Level 4)
5. Kilogram (Level 4)
6. Tonne
7. Gram
8. Microgram
9. Carat (mass)
10. Ton (Level 4)
    1. Long ton
    2. Short ton
11. Bushel
12. Peck
13. Ounce (Level 4)
14. Mark (unit)
15. Pound (mass) (Level 4)
16. Sack (unit)
17. Grain (unit)
18. Slug (unit)
19. Stone (unit)
20. Dram (unit)
21. Hundredweight
22. Pennyweight
23. Electron mass

Chinese

This section contains 6 articles.

1. Candareen
2. Cash (unit)
3. Catty
4. Mace (unit)
5. Picul
6. Tael

Speed

This section contains 5 articles.

1. Knot (unit) (Level 4)
2. Kilometres per hour
3. Metre per second
4. Miles per hour
5. Foot per second

Acceleration

This section contains 3 articles.

1. Gal (unit)
2. Metre per second squared
3. Standard gravity

Angular velocity

This section contains 3 articles.

1. Inverse second
2. Radian per second
3. Revolutions per minute

Ratio

This section contains 6 articles.

1. Decibel (Level 4)
2. Mole fraction
3. Mass fraction (chemistry)
4. Neper
5. Relative density
6. Volume fraction

Density

This section contains 2 articles.

1. Gram per cubic centimetre
2. Kilogram per cubic metre

Concentration

This section contains 4 articles.

1. Brix
2. Molar concentration
3. Molality
4. Parts-per notation

Time

This section contains 25 articles.

1. Attosecond
2. Femtosecond
3. Picosecond
4. Nanosecond
5. Shake (unit)
6. Microsecond
7. Millisecond
8. Second (Level 4)
9. Minute (Level 4)
10. Moment (unit)
11. Hour (Level 4)
12. Day (Level 3)
13. Week (Level 4)
14. Fortnight
15. Month (Level 4)
16. Year (Level 3)
17. Olympiad
18. Lustrum
19. Decade
20. Century
21. Millennium
22. Epoch
23. Era
24. Aeon
25. Eternity

Frequency

This section contains 1 article.

1. Hertz (Level 4)

Specific intensity

This section contains 1 article.

1. Jansky

Charge

This section contains 3 articles.

1. Coulomb (Level 4)
2. Statcoulomb
3. Ampere-hour

Current

This section contains 1 article.

1. Ampere (Level 4)

Electric potential

This section contains 1 article.

1. Volt (Level 4)

Capacitance

This section contains 1 article.

1. Farad (Level 4)

Magnetic field

This section contains 2 articles.

1. Tesla (unit) (Level 4)
2. Gauss (unit)

Magnetic flux

This section contains 2 articles.

1. Weber (unit) (Level 4)
2. Maxwell (unit)

Electrical resistance

This section contains 1 article.

1. Ohm (Level 4)

Electrical conductance

This section contains 1 article.

1. Siemens (unit) (Level 4)

Inductance

This section contains 1 article.

1. Henry (unit) (Level 4)

Temperature

This section contains 4 articles.

1. Celsius (Level 4)
2. Fahrenheit (Level 4)
3. Kelvin (Level 4)
4. Rankine scale

Amount of substance

This section contains 1 article.

1. Mole (unit) (Level 4)

Luminous intensity

This section contains 2 articles.

1. Candela (Level 4)
2. Candlepower

Luminous flux

This section contains 1 article.

1. Lumen (unit) (Level 4)

Illuminance

This section contains 1 article.

1. Lux (Level 4)

Radioactivity

This section contains 2 articles.

1. Becquerel (Level 4)
2. Curie (unit)

Exposure

This section contains 1 article.

1. Roentgen (unit)

Absorbed dose

This section contains 2 articles.

1. Gray (unit) (Level 4)
2. Rad (radiation unit)

Equivalent dose

This section contains 1 article.

1. Sievert (Level 4)

Catalytic activity

This section contains 2 articles.

1. Katal
2. Enzyme unit

Information

This section contains 13 articles.

1. Baud
2. Bit (Level 4)
3. Kilobit
4. Megabit
5. Byte (Level 4)
6. Kilobyte
7. Megabyte
8. Gigabyte
9. Nat (unit)
10. Shannon (unit)
11. Qubit

Visual

This section contains 2 articles.

1. Dots per inch
2. Pixel density

Other

This section contains 3 articles.

1. Alcohol proof
2. Air quality index
3. Ultraviolet index