One litre is the volume of 1000 cubic centimetres, that is a cube of 10 × 10 × 10 centimetres (1000 cm3). One litre of water at 4 °C (277 K; 39 °F) has the mass of exactly one kilogram. This results from the definition given in 1795, where the gram was defined as the weight o Contact online >>
One litre is the volume of 1000 cubic centimetres, that is a cube of 10 × 10 × 10 centimetres (1000 cm3). One litre of water at 4 °C (277 K; 39 °F) has the mass of exactly one kilogram. This results from the definition given in 1795, where the gram was defined as the weight of one cubic centimetre of melting ice.[2]
Liters are usually utilized to measure the volume of liquids, this is because the density of liquids can vary a lot. However it can be applied to solids as well, for example 1 liter of Iron is around 7.7 kg. The symbol for litre is l or L.[1] The script letter ℓ is also sometimes used.
In 1960 the SI was introduced. The BIPM changed the definition of the litre back to "one dm3". The litre is not part of SI. The BIPM defined the litre[Note 2] as a "Non-SI unit accepted for use with the SI". This was because it is used in many countries. The BIPM said that the litre should not be used for very accurate work.[9][10]
According to SI rules, the symbol for the litre should be "l". This is because the litre was not named after somebody whose name was "Litre".[Note 3] However the symbol "l" and the number "1" are easily confused. In 1979 the BIPM made an exception for the symbol for the litre. They said that people could use either "L" or "l" as its symbol.[11]
In Europe, milk is sold in one litre cartons. One litre bottle is also a popular package for soft drinks. Most alcoholic drinks are sold as 1/3 litre (0.33 l), 1⁄2 litre (0.5 l) 3/4 litre (0.75 l) or 1 litre bottles.
Volume is the measure of the 3-dimensional space occupied by matter, or enclosed by a surface, measured in cubic units. The SI unit of volume is the cubic meter (m3), which is a derived unit.
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