Grave (unit)
Physical unit | |
---|---|
Unit name | Grave |
Unit symbol | |
Physical quantity (s) | Dimensions |
Formula symbol | |
dimension | |
In SI units | |
In CGS units | |
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.