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This category contains definitions related to Kilogram.

The kilogram is the SI base unit of mass.

It is defined as being equal to:

The fixed numerical value of the Planck constant $h$ to be $6 \cdotp 62607015 \times 10^{-34}$ when expressed in the unit Joule seconds.

The Joule second is equal to $1 \, \mathrm {kg} \, \mathrm m^2 \, \mathrm s^{−1}$, where the metre and the second are defined in terms of:

the speed of light $c$
the time of transition between the two hyperfine levels of the ground state of the caesium $133$ atom at rest at $0 \, \mathrm K$.
\(\ds \) \(\) \(\ds 1\) kilogram
\(\ds \) \(=\) \(\ds 1000\) grams
\(\ds \) \(\approx\) \(\ds 2.205\) pounds (avoirdupois)

Pages in category "Definitions/Kilogram"

The following 6 pages are in this category, out of 6 total.