nLab kilogram

References

Surveys, textbooks and lecture notes

The kilogram (kilogramme, $kg$) is a unit of mass. It is $1000$ grams (grammes, $g$).

The kilogram is defined by setting the Planck constant to be exactly

$6.62607015\times 10^{-34} kg\cdot m^2\cdot s^{-1}$

and using the previously given definitions of the second and the metre.

The kilogram used to be defined as the mass of a certain physical object, le Grand K, kept by the BIPM in Paris.

References

Last revised on April 2, 2019 at 19:53:52. See the history of this page for a list of all contributions to it.