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Furlong

A furlong is a unit for measuring distance. It is part of the imperial and US customary systems. It is equal to 660 feet or 201.168 metres. There are eight furlongs in a mile.

                                               

Gallon

A gallon is a volumetric unit of measurement. People have used many different gallons throughout history. There is only one type of gallon still commonly used.

                                               

Inch

The inch is a unit of length in the Imperial system and the United States customary system. The abbreviation for inches is in or ". There are 12 inches in a foot. One inch is equal to 2.54 centimetres. The word "inch" came from Middle English unc ...

                                               

Pint

The pint is a unit of volume in imperial units and United States customary units. There are three types of pints used in different countries. An imperial pint and US pint both equal ​ 1 ⁄ 2 of a quart and ​ 1 ⁄ 8 of a gallon. An imperial fluid ou ...

                                               

Pound (mass)

A pound is a unit used to measure the mass of something. It is used in the imperial system and the United States customary system. There are a number of different definitions. The most commonly used definitions band today is the international avo ...

                                               

Rod (unit)

A rod, a perch or a pole is a unit of length in the imperial and US systems. In medieval times English ploughmen used a wooden stick with a pointed tip to spur or guide their oxen. The rod was the length of this stick. In use from the 6th century ...

                                               

Square mile

A square mile is an American unit of measurement of area. It is the area inside a square that has each side equal to one statute mile. This way of talking about area is often used to say how much land there is on a farm, or in a city or country, ...

                                               

Square yard

A square yard is the United States and British unit of measurement for area. It is the area inside a square that has each side equal to one yard. This measurement can be found by squaring the measure of one side of the square. It was formerly use ...

                                               

Thou (unit)

The thou or mil is a unit of length in the Imperial System and the United States Customary Units. It is equal to ​ 1 ⁄ 1.000 of an inch. This is not to be confused with the old form of "you".

                                               

Yard

The Yard is a unit of length in the Imperial System and United States Customary Units. The word "yard" comes from the Anglo-Saxon word for a straight rod.

                                               

Chain (unit)

A chain was a unit of length. It is part of the imperial and United States customary systems. It was used for measuring land. The short way of writing chains is ch. There are a number of different definitions of the chain, from 50 to 100 feet lon ...

                                               

League (unit)

A league is an old unit of length. It was the distance a person could walk in about one hour. The Romans adopted the league and it became a common unit of measurement throughout western Europe and Latin America. In English-speaking countries the ...

                                               

Talent (measurement)

A talent is an ancient unit of mass. It corresponded generally to the mass of water in the volume of an amphora, i.e. a one-foot cube. The Babylonians and Sumerians had a system in which there were 60 shekels in a mina and 60 minas in a talent in ...

                                               

Centimetre

A centimetre is a unit of length in the International System of Units measurement system. It is equal to one hundredth of a metre. Centi- is placed in front to say a hundredth. The centimetre is the base unit of length in the old centimetre-gram- ...

                                               

Coulomb

The coulomb is the SI unit of electric charge. It is named after Charles-Augustin de Coulomb. A coulomb is a quantity of electric charge. The movement of electric charge is called current in an electric circuit. For example, a flashlight bulb tha ...

                                               

Henry (unit)

In physics, and electronics, the henry is the SI unit of inductance. It is named after Joseph Henry, the American scientist who discovered electromagnetic induction. discovered the same thing independently. They discovered it at about the same ti ...

                                               

Joule per mole

The joule per mole is an SI derived unit of energy per amount of material. Energy is measured in joules, and the amount of material is measured in moles. In other words, joule per mole is a unit for how much energy is in a certain amount of matter.

                                               

Kelvin

The Kelvin scale is the SI unit of temperature. It is named in honour of the physicist William Thomson, the first Lord Kelvin. 0 degree celsius = 273 kelvin

                                               

Kilogram

The kilogram is the base unit of mass in the International System of Units. It is in widely used in science, engineering, and commerce worldwide. The kilogram is exactly the mass of one litre of water. As of May 20, 2019, the definition of the ki ...

                                               

Lumen (unit)

The lumen is the SI derived unit for brightness. It is defined as 1 candela times 1 steradian. One lumen is about a twelfth the brightness of a candle, so a candle has a brightness of around 12 lumens.

                                               

Metre

A metre is the basic unit of length in the SI measurement system. The symbol for the metre is m. The first meaning was one ten-millionth of the distance between the Earths equator and the North Pole along the Paris meridian. The metre is now defi ...

                                               

Specific weight

The specific weight is the weight per unit volume of a material. The symbol of specific weight is γ. A commonly used value is the specific weight of water on Earth at 4° Celsius, which is 9.807 kilonewton per meter cube.

                                               

Steradian

The steradian or square radian is an SI unit. It is like a radian, but for smooth 3D objects, for example, a sphere. A steradian is about one twelfth the surface area of a sphere, regardless of how big the sphere is.

                                               

Tesla (unit)

The tesla is the SI derived unit used to measure the strength of magnetic fields. Tesla can be measured in different ways; for example, one tesla is equal to one weber per square meter. The tesla was first defined in 1960 by the General Conferenc ...

                                               

Weber (unit)

In physics, the weber is the SI unit of magnetic flux. A flux density of one Wb/m 2 is one tesla. The weber is named for the German physicist Wilhelm Eduard Weber 1804–1891.

                                               

Yotta-

Yotta is the largest decimal unit prefix in the metric system, denoting a factor of 10 24 or 1 000 ; that is, one million million, or one septillion. It has the unit symbol Y. The prefix name is derived from the Ancient Greek οκτώ, meaning "eight ...

                                               

Hectare

A hectare is a unit of measurement of area. It is equal to 10.000 square metres, or a square with sides of 100 by 100 metres. 100 hectares is 1 square kilometre. Therefore, a farm with 200 hectares of fields has 2 square kilometres of fields. The ...

                                               

Mu (unit of area)

                                               

Square foot

A square foot is a way to measure area. It is the area made by a square that has 1 foot sides. It is used mainly in the United States and partially in Bangladesh, Canada, Ghana, Hong Kong, India, Liberia, Malaysia, Myanmar, Nepal, Pakistan, Singa ...

                                               

Square metre

The square meter is the SI-derived unit of area. It has a symbol m². It is defined as the area of a square whose sides measure exactly one metre. The square metre is derived from the SI base unit of the metre, which in turn is defined as the leng ...

                                               

Vergee

A vergee, or vergee, is a unit of area, a quarter of the French acre. Other spellings include vergie and vregie. It is not an SI unit. The SI unit of area is the square metre. The term derives from Latin virga rod. Compare French verge yard. In t ...

                                               

Unit of length

A unit of length is a way of measuring length or distance. Common units of length in the International System of Units SI are: metre and units that are developed from it, such as "centimetre" or "kilometre" But there are a lot of units that do no ...

                                               

Angstrom

An angstrom or ångstrom is a non-SI unit of length that is internationally recognized. It equals 0.1 nanometer. It can be written in scientific notations as 1×−10 m or 1 E-10 m - both mean 1/10.000.000.000 meters. It is sometimes used to express ...

                                               

Cubit

Cubit is the name for any one of many units of measure used by various ancient peoples and is among the first recorded units of length. The cubit is based on measuring by comparing – especially rope and textiles, but also for timber and stone – t ...

                                               

Kilometre

The kilometre is a common unit used for longer distances on Earth. The international unit for measuring distances is the metre and a kilometre is 1000 metres. It is used in some countries for measuring road and sea distances. In the UK and the US ...

                                               

Long ton

The long ton is the imperial ton or weight ton. It is used in the United Kingdom and several other Commonwealth countries. In their avoirdupois or Imperial system of measurements, it is equal to 2.240 pounds or 35 cubic feet of salt water with a ...

                                               

Metric ton

A metric ton is a unit of measurement for mass. It is equal to 1000 kilograms, or one megagram. When people talk about a ton, in countries which use the SI system of units, they mean the metric ton. The metric ton is usually abbreviated to t.

                                               

Short ton

A short ton is a unit of measurement that is equal to 2000 lbs. Often, the short ton is used to measure objects that have a very large weight. This is because using smaller units would be difficult.

                                               

Celsius

Celsius, sometimes called centigrade, is a unit of measurement used in many countries to measure temperature. This unit was created by Anders Celsius, a Swedish astronomer. 0 degrees ° Celsius is the melting point of pure water at sea level norma ...

                                               

Cubic centimetre

A cubic centimetre is a commonly used unit of volume extending the derived SI-unit cubic metre and corresponds to the volume of a cube measuring 1 cm × 1 cm × 1 cm. One cubic centimetre corresponds to a volume of 1 ⁄ 1000000 of a cubic metre, or ...

                                               

Cubic metre

The cubic metre is the SI unit of volume. It is a cube with a length, height, and width of one metre, with 1.000 litres of space. In the many places it is spelled cubic meter ". Other names are stere and kilolitre or kiloliter.

                                               

Cup (unit)

                                               

Litre

A litre or liter is one of the metric units of volume. It is not a basic SI unit, but it is a supplementary unit. One litre is the volume of 1000 cubic centimetres, that is a cube of 10 × 10 × 10 centimetres 1000 cm 3. One litre of water at 4 °C ...

                                               

Climate

Climate means the usual condition of the temperature, humidity, atmospheric pressure, wind, rainfall, and other Meteorology|meteorological Weather|elements in an area of the Earths surface for a long time. In simple terms climate is the average c ...

                                               

Climate of California

The climate of California varies widely from desert to alpine depending on latitude, elevation and how close the area is to the coast. Most of the coastal and southern parts of the state have a Mediterranean climate with somewhat rainy winters an ...

                                               

Climate of New York

The climate of New York State is mostly humid continental with cold winters and warm to hot and humid summers. Average annual temperatures ranges from 40°F 4.4°C in Old Forge in upstate New York to 56°F 13.3°C in New York City at LaGuardia Airpor ...

                                               

Deserts of Australia

The deserts of Australia cover 1.371.000 square kilometres, or 18% of the Australian mainland. However, about 35% of Australia gets so little rain it is actually a desert. The deserts in Australia are mainly in the western plateau and interior lo ...

                                               

Heinrich event

A Heinrich event is one of the events which occurred during the coldest point of Bond Cycles in which many icebergs were discharged into the North Atlantic and melted. Evidence for this can be found in the north Atlantic sediment cores which show ...

                                               

Humid continental climate

A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Koppen in 1900. A place with a humid continental climate has big seasonal temperature differences. It has warm to hot summers and cold winters. Precip ...

                                               

Insolation

Insolation is derived from the words "incoming solar radiation". Insolation is specifically applied to radiation which is arriving at earth’s atmosphere first and then earth surface. The heat is derived from solar energy, normally called solar ra ...