Grave (unit)

Physical unit
Unit name	Grave
Unit symbol	${\displaystyle \mathrm {G} }$
Physical quantity (s)	Dimensions
Formula symbol	${\displaystyle m}$
dimension	${\displaystyle {\mathsf {M}}}$
In SI units	${\displaystyle \mathrm {1\,G\approx 1\;kg} }$
In CGS units	${\displaystyle \mathrm {1\,G\approx 10^{3}\;g} }$
Named after	Latin gravitas , "heaviness"
See also: Old weights and measures

The grave ( French grave , from Latin gravitas "heaviness") is a no longer in use basic unit of mass . The symbol of the grave is G.

The grave was part of a commissioned by the French King Louis XVI. developed system of units, which is the historical root of the international system of units (SI) used today. 1793 Grave 1 was defined as the mass of one liter of water at 4  ° C defined. As early as 1795 it was replaced by the gram , until the kilogram was finally introduced in 1799 , which was defined as the mass of a cylinder made of platinum (the original kilogram , which should correspond to the mass of one liter of water at 4 ° C).

Hence, 1 grave would be about one kilogram. The original kilogram (which defined the kilogram until May 20, 2019) is (slightly) heavier than 1 liter of water.

Web links

• The history of the units grave and kilogram