122 relations: Acre, Africa, American football, Amino acid, Antarctica, Arable land, Area, Association football, Atlantic Ocean, Atomic nucleus, Ångström, Bali, Barn (unit), Basketball, Betelgeuse, Bok globule, British Empire, Brown dwarf, Centimetre, CERN, Cigarette, City block, City of London, Community of Madrid, Computer monitor, Contiguous United States, Credit card, Cricket field, CT Chamaeleontis, Decametre, Decimetre, Dots per inch, Dyson sphere, Earth, Egypt, Escherichia coli, Fédération Internationale de Volleyball, Femtometre, Fovea centralis, Globular protein, Great Pyramid of Giza, Hair, Hectare, Hectometre, Hole punch, Hong Kong, Hypergiant, Inch, International Studies Quarterly, ISO 216, ..., Italy, Jacksonville, Florida, Jamaica, Jiuquan, Jupiter, Lake Victoria, Lipid bilayer, List of countries and dependencies by area, List of country subdivisions by area, London, Los Angeles, Manhattan, Mars, Mechanical pencil, Mercury (planet), Mexico, Micrometre, Milky Way, Millimetre, Monaco, Moon, Nanometre, National Botanic Gardens (Ireland), Neptune, NGC 7635, Nuclear pore, Olympic-size swimming pool, Oort cloud, Orbit, Orders of magnitude (length), Pacific Ocean, Paper size, Paris, Picometre, Pin, Pixel, Planck length, Pluto, Postage stamp, Red blood cell, Red supergiant star, Roman Empire, Sakha Republic, San Marino, Saturn, South Korea, Sphere, Square foot, Square kilometre, Square metre, Square mile, Stremma, Suburb, Sun, Taipei, Tennis court, The Pentagon, Thomson scattering, Tokyo, Toronto, Turkey, University of North Carolina at Chapel Hill, Uranium, Uranus, Van Maanen 2, Vatican City, Vega, Venus, Volleyball, VY Canis Majoris, Walt Disney World, White dwarf. Expand index (72 more) » « Shrink index
The acre is a unit of land area used in the imperial and US customary systems.
Africa is the world's second largest and second most-populous continent (behind Asia in both categories).
American football, referred to as football in the United States and Canada and also known as gridiron, is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end.
Amino acids are organic compounds containing amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid.
Antarctica is Earth's southernmost continent.
Arable land (from Latin arabilis, "able to be plowed") is, according to one definition, land capable of being ploughed and used to grow crops.
Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane.
Association football, more commonly known as football or soccer, is a team sport played between two teams of eleven players with a spherical ball.
The Atlantic Ocean is the second largest of the world's oceans with a total area of about.
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.
The ångström or angstrom is a unit of length equal to (one ten-billionth of a metre) or 0.1 nanometre.
Bali (Balinese:, Indonesian: Pulau Bali, Provinsi Bali) is an island and province of Indonesia with the biggest Hindu population.
A barn (symbol: b) is a unit of area equal to 10−28 m2 (100 fm2).
Basketball is a team sport played on a rectangular court.
Betelgeuse, also designated Alpha Orionis (α Orionis, abbreviated Alpha Ori, α Ori), is the ninth-brightest star in the night sky and second-brightest in the constellation of Orion.
In astronomy, Bok globules are isolated and relatively small dark nebulae, containing dense cosmic dust and gas from which star formation may take place.
The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom and its predecessor states.
Brown dwarfs are substellar objects that occupy the mass range between the heaviest gas giant planets and the lightest stars, having masses between approximately 13 to 75–80 times that of Jupiter, or approximately to about.
A centimetre (international spelling as used by the International Bureau of Weights and Measures; symbol cm) or centimeter (American spelling) is a unit of length in the metric system, equal to one hundredth of a metre, centi being the SI prefix for a factor of.
The European Organization for Nuclear Research (Organisation européenne pour la recherche nucléaire), known as CERN (derived from the name Conseil européen pour la recherche nucléaire), is a European research organization that operates the largest particle physics laboratory in the world.
A cigarette is a narrow cylinder containing tobacco that is rolled into thin paper for smoking.
A city block, urban block or simply block is a central element of urban planning and urban design.
The City of London is a city and county that contains the historic centre and the primary central business district (CBD) of London.
The Community of Madrid (Comunidad de Madrid) is one of the seventeen autonomous communities of Spain.
A computer monitor is an output device which displays information in pictorial form.
The contiguous United States or officially the conterminous United States consists of the 48 adjoining U.S. states plus Washington, D.C. on the continent of North America.
A credit card is a payment card issued to users (cardholders) to enable the cardholder to pay a merchant for goods and services based on the cardholder's promise to the card issuer to pay them for the amounts so paid plus the other agreed charges.
A cricket field is a large grassy ground on which the game of cricket is played.
CT Chamaeleontis (CT Cha) is a T Tauri star in the constellation of Chamaeleon.
A decametre or dekametre (American spelling: decameter, earlier dekameter; symbol dam,, This measure is included in the SI mostly for completeness: in principle, any combination of prefix and unit can be written, but many are rarely used in practice. One practical use of the decameter is for altitude of geopotential heights in meteorology. Meteorologists also use another seldom encountered SI prefix: hecto- in hectopascal (hPa). The volumetric form (see below) cubic decametre is convenient for describing large volumes of water such as in rivers and lakes. The square decametre (dam2) also known as the are (a), is the basis for the hectare (100 dam2), the standard metric unit of land registry.
The decimetre (SI symbol dm) is a unit of length in the metric system, equal to one tenth of a metre (the International System of Units base unit of length), ten centimetres or 1/0.254 (approximately 3.93700787) inches.
Dots per inch (DPI, or dpi) is a measure of spatial printing or video or image scanner dot density, in particular the number of individual dots that can be placed in a line within the span of 1 inch (2.54 cm).
A Dyson sphere is a hypothetical megastructure that completely encompasses a star and captures a large percentage of its power output.
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
Egypt (مِصر, مَصر, Khēmi), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia by a land bridge formed by the Sinai Peninsula.
Escherichia coli (also known as E. coli) is a Gram-negative, facultatively anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms (endotherms).
The Fédération Internationale de Volleyball (English: International Volleyball Federation), commonly known by the acronym FIVB, is the international governing body for the sports of indoor, beach and grass volleyball.
The femtometre (American spelling femtometer, symbol fm derived from the Danish and Norwegian word femten, "fifteen"+Ancient Greek: μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres, which means a quadrillionth of one.
The fovea centralis is a small, central pit composed of closely packed cones in the eye.
Globular proteins or spheroproteins are spherical ("globe-like") proteins and are one of the common protein types (the others being fibrous, disordered and membrane proteins).
The Great Pyramid of Giza (also known as the Pyramid of Khufu or the Pyramid of Cheops) is the oldest and largest of the three pyramids in the Giza pyramid complex bordering what is now El Giza, Egypt.
Hair is a protein filament that grows from follicles found in the dermis.
The hectare (SI symbol: ha) is an SI accepted metric system unit of area equal to a square with 100 meter sides, or 10,000 m2, and is primarily used in the measurement of land.
The hectometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: hm) or hectometer (American spelling) is an uncommonly used unit of length in the metric system, equal to one hundred metres.
A hole punch (also known as a hole puncher) most commonly refers to an office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder.
Hong Kong (Chinese: 香港), officially the Hong Kong Special Administrative Region of the People's Republic of China, is an autonomous territory of China on the eastern side of the Pearl River estuary in East Asia.
A hypergiant (luminosity class 0 or Ia+) is among the very rare kinds of stars that typically show tremendous luminosities and very high rates of mass loss by stellar winds.
The inch (abbreviation: in or &Prime) is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to yard but usually understood as of a foot.
International Studies Quarterly is a quarterly peer-reviewed academic journal of international studies and the official journal of the International Studies Association.
ISO 216 specifies international standard (ISO) paper sizes used in most countries in the world today, although not in Canada, the United States, Mexico, or the Dominican Republic.
Italy (Italia), officially the Italian Republic (Repubblica Italiana), is a sovereign state in Europe.
Jacksonville is the most populous city in the U.S. state of Florida and the largest city by area in the contiguous United States.
Jamaica is an island country situated in the Caribbean Sea.
Jiuquan, formerly known as Suzhou, is a prefecture-level city in the northwesternmost part of Gansu Province in the People's Republic of China.
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
Lake Victoria (Nam Lolwe in Luo; Nalubaale in Luganda; Nyanza in Kinyarwanda and some Bantu languages) is one of the African Great Lakes.
The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules.
This is a list of the world's countries and their dependent territories by area, ranked by total area.
This is a list of the 50 largest country subdivisions and dependent territories by area (including surface water) in square kilometres.
London is the capital and most populous city of England and the United Kingdom.
Los Angeles (Spanish for "The Angels";; officially: the City of Los Angeles; colloquially: by its initials L.A.) is the second-most populous city in the United States, after New York City.
Manhattan is the most densely populated borough of New York City, its economic and administrative center, and its historical birthplace.
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
A mechanical pencil (US English) or propelling pencil (UK English), also clutch pencil, is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead".
Mercury is the smallest and innermost planet in the Solar System.
Mexico (México; Mēxihco), officially called the United Mexican States (Estados Unidos Mexicanos) is a federal republic in the southern portion of North America.
The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".
The Milky Way is the galaxy that contains our Solar System.
The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length.
Monaco, officially the Principality of Monaco (Principauté de Monaco), is a sovereign city-state, country and microstate on the French Riviera in Western Europe.
The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.
The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (m).
The National Botanic Gardens (Irish: Garraithe Náisiúnta na Lus) are located in Glasnevin, 5 km north-west of Dublin city centre, Ireland.
Neptune is the eighth and farthest known planet from the Sun in the Solar System.
NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia.
Nuclear pore complexes are large protein complexes that span the nuclear envelope, which is the double membrane surrounding the eukaryotic cell nucleus.
An Olympic-size swimming pool conforms to regulated dimensions, large enough for international competition.
The Oort cloud, named after the Dutch astronomer Jan Oort, sometimes called the Öpik–Oort cloud, is a theoretical cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from.
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
The following are examples of orders of magnitude for different lengths.
The Pacific Ocean is the largest and deepest of Earth's oceanic divisions.
Many paper size standards conventions have existed at different times and in different countries.
Paris is the capital and most populous city of France, with an area of and a population of 2,206,488.
The picometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the metric system, equal to, or one trillionth of a metre, which is the SI base unit of length.
A pin is a device used for fastening objects or material together.
In digital imaging, a pixel, pel, dots, or picture element is a physical point in a raster image, or the smallest addressable element in an all points addressable display device; so it is the smallest controllable element of a picture represented on the screen.
In physics, the Planck length, denoted, is a unit of length, equal to metres.
Pluto (minor planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune.
A postage stamp is a small piece of paper that is purchased and displayed on an item of mail as evidence of payment of postage.
Red blood cells-- also known as RBCs, red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes (from Greek erythros for "red" and kytos for "hollow vessel", with -cyte translated as "cell" in modern usage), are the most common type of blood cell and the vertebrate's principal means of delivering oxygen (O2) to the body tissues—via blood flow through the circulatory system.
Red supergiants are stars with a supergiant luminosity class (Yerkes class I) of spectral type K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous.
The Roman Empire (Imperium Rōmānum,; Koine and Medieval Greek: Βασιλεία τῶν Ῥωμαίων, tr.) was the post-Roman Republic period of the ancient Roman civilization, characterized by government headed by emperors and large territorial holdings around the Mediterranean Sea in Europe, Africa and Asia.
The Sakha (Yakutia) Republic (p; Sakha Öröspüübülükete), simply Sakha (Yakutia) (Саха (Якутия); Sakha Sire), is a federal subject of Russia (a republic).
San Marino, officially the Republic of San Marino (Repubblica di San Marino), also known as the Most Serene Republic of San Marino (Serenissima Repubblica di San Marino), is an enclaved microstate surrounded by Italy, situated on the Italian Peninsula on the northeastern side of the Apennine Mountains.
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.
South Korea, officially the Republic of Korea (대한민국; Hanja: 大韓民國; Daehan Minguk,; lit. "The Great Country of the Han People"), is a country in East Asia, constituting the southern part of the Korean Peninsula and lying east to the Asian mainland.
A sphere (from Greek σφαῖρα — sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk").
The square foot (plural square feet; abbreviated sq ft, sf, ft2) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States and partially in Bangladesh, Canada, Ghana, Hong Kong, India, Malaysia, Nepal, Pakistan, Singapore and the United Kingdom.
Square kilometre (International spelling as used by the International Bureau of Weights and Measures) or square kilometer (American spelling), symbol km2, is a multiple of the square metre, the SI unit of area or surface area.
The square metre (International spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area, with symbol m2 (Unicode character). It is the area of a square whose sides measure exactly one metre.
The square mile (abbreviated as sq mi and sometimes as mi²)Rowlett, Russ (September 1, 2004).
The stremma (stremmata; στρέμμα, strémma) is a Greek unit of land area now equal to precisely 1,000 square meters.
A suburb is a mixed-use or residential area, existing either as part of a city or urban area or as a separate residential community within commuting distance of a city.
The Sun is the star at the center of the Solar System.
Taipei, officially known as Taipei City, is the capital and a special municipality of Taiwan (officially known as the Republic of China, "ROC").
A tennis court is the venue where the sport of tennis is played.
The Pentagon is the headquarters of the United States Department of Defense, located in Arlington County, Virginia, across the Potomac River from Washington, D.C. As a symbol of the U.S. military, The Pentagon is often used metonymically to refer to the U.S. Department of Defense.
Thomson scattering is the elastic scattering of electromagnetic radiation by a free charged particle, as described by classical electromagnetism.
, officially, is one of the 47 prefectures of Japan and has been the capital since 1869.
Toronto is the capital city of the province of Ontario and the largest city in Canada by population, with 2,731,571 residents in 2016.
Turkey (Türkiye), officially the Republic of Turkey (Türkiye Cumhuriyeti), is a transcontinental country in Eurasia, mainly in Anatolia in Western Asia, with a smaller portion on the Balkan peninsula in Southeast Europe.
The University of North Carolina at Chapel Hill, also known as UNC, UNC Chapel Hill, the University of North Carolina, or simply Carolina, is a public research university located in Chapel Hill, North Carolina, United States.
Uranium is a chemical element with symbol U and atomic number 92.
Uranus is the seventh planet from the Sun.
Van Maanen 2 (van Maanen's Star) is a white dwarf.
Vatican City (Città del Vaticano; Civitas Vaticana), officially the Vatican City State or the State of Vatican City (Stato della Città del Vaticano; Status Civitatis Vaticanae), is an independent state located within the city of Rome.
Vega, also designated Alpha Lyrae (α Lyrae, abbreviated Alpha Lyr or α Lyr), is the brightest star in the constellation of Lyra, the fifth-brightest star in the night sky, and the second-brightest star in the northern celestial hemisphere, after Arcturus.
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.
Volleyball is a team sport in which two teams of six players are separated by a net.
VY Canis Majoris (VY CMa) is an extreme pulsating red hypergiant (or supergiant) star located in the constellation Canis Major.
The Walt Disney World Resort, commonly known as Walt Disney World, or often just as Disney World, is an entertainment complex in Bay Lake and Lake Buena Vista, Florida, near Orlando and Kissimmee, Florida.
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
0.1km2, 1 E -1 m2, 1 E -1 m², 1 E -2 m2, 1 E -2 m², 1 E 0 m2, 1 E 0 m², 1 E 1 m2, 1 E 1 m², 1 E 2 m2, 1 E 2 m², 1 E 3 m2, 1 E 3 m², 1 E 4 m2, 1 E 4 m², 1 E 5 m2, 1 E 5 m², 1 E 6 m2, 1 E 6 m², 1 E 7 m2, 1 E 7 m², 1 E+1 m2, 1 E+1 m², 1 E+10 m2, 1 E+10 m², 1 E+11 m2, 1 E+11 m², 1 E+12 m2, 1 E+12 m², 1 E+13 m2, 1 E+13 m², 1 E+14 m2, 1 E+14 m², 1 E+15 m2, 1 E+15 m², 1 E+16 m2, 1 E+16 m², 1 E+17 m2, 1 E+17 m², 1 E+18 m2, 1 E+18 m², 1 E+19 m2, 1 E+19 m², 1 E+2 m2, 1 E+2 m², 1 E+20 m2, 1 E+20 m², 1 E+21 m2, 1 E+21 m², 1 E+22 m2, 1 E+22 m², 1 E+23 m2, 1 E+23 m², 1 E+24 m2, 1 E+24 m², 1 E+25 m2, 1 E+25 m², 1 E+26 m2, 1 E+26 m², 1 E+27 m2, 1 E+27 m², 1 E+3 m2, 1 E+3 m², 1 E+41 m2, 1 E+41 m², 1 E+5 m2, 1 E+5 m², 1 E+6 m2, 1 E+6 m², 1 E+7 m2, 1 E+7 m², 1 E+8 m2, 1 E+8 m², 1 E+9 m2, 1 E+9 m², 1 E-1 m2, 1 E-1 m², 1 E-11 m2, 1 E-11 m², 1 E-12 m2, 1 E-12 m², 1 E-13 m2, 1 E-13 m², 1 E-14 m2, 1 E-15 m2, 1 E-2 m2, 1 E-2 m², 1 E-3 m2, 1 E-3 m², 1 E-30 m2, 1 E-4 m2, 1 E-4 m², 1 E-5 m2, 1 E-5 m², 1 E-6 m2, 1 E-6 m², 1 E-7 m2, 1 E-7 m², 1 E-8 m2, 1 E-8 m², 1 E0 m2, 1 E0 m², 1 E00 m2, 1 E00 m², 1 E01 m2, 1 E01 m², 1 E02 m2, 1 E02 m², 1 E03 m2, 1 E03 m², 1 E04 m2, 1 E04 m², 1 E05 m2, 1 E05 m², 1 E06 m2, 1 E06 m², 1 E07 m2, 1 E07 m², 1 E08 m2, 1 E08 m², 1 E09 m2, 1 E09 m², 1 E1 m2, 1 E1 m², 1 E10 m2, 1 E10 m², 1 E11 m2, 1 E11 m², 1 E12 m2, 1 E12 m², 1 E13 m2, 1 E13 m², 1 E14 m2, 1 E14 m², 1 E15 m2, 1 E15 m², 1 E16 m2, 1 E16 m², 1 E17 m2, 1 E17 m², 1 E18 m2, 1 E18 m², 1 E19 m2, 1 E19 m², 1 E2 m2, 1 E2 m², 1 E20 m2, 1 E20 m², 1 E21 m2, 1 E21 m², 1 E22 m2, 1 E22 m², 1 E23 m2, 1 E23 m², 1 E24 m2, 1 E24 m², 1 E25 m2, 1 E25 m², 1 E26 m2, 1 E26 m², 1 E3 m2, 1 E3 m², 1 E41 m2, 1 E41 m², 1 E5 m2, 1 E5 m², 1 E6 m2, 1 E6 m², 1 E7 m2, 1 E7 m², 1 E8 m2, 1 E8 m², 1 E9 m2, 1 E9 m², 1 cm2, 1 cm², 1 km2, 1 km², 1 m2, 10 cm2, 10 cm², 10 km2, 10 km², 100 cm2, 100 cm², 100 km2, 100 km², 100,000 km2, 100,000 km², 1000 cm2, 1000 cm², 1000 km2, 1000 km², 100000 km2, 100000 km², 1000000000000km2, 100000000000km2, 10000000000km2, 1000000000km2, 100000000km2, 10000000km2, 1000000km2, 100000km2, 10000km2, 1000km2, 100km2, 10km2, 1e-1 m2, 1e-2 m2, 1e0 m2, 1e1 m2, 1e10 m2, 1e11 m2, 1e12 m2, 1e13 m2, 1e14 m2, 1e15 m2, 1e16 m2, 1e17 m2, 1e18 m2, 1e2 m2, 1e3 m2, 1e4 m2, 1e5 m2, 1e6 m2, 1e7 m2, 1e8 m2, 1km2, Areas of other orders of magnitude, Square micrometre.