< 1 >
Planck mass
The Planck mass mp is a unit of mass. These is approximately
or
It is about 22 micrograms, which is very large in comparison with subatomic particles, but well within the mass range of living things.
Explanation
The Planck mass is defined as
where
ℏ Reduced Planck constant G Gravitational constant c Speed of light
HistoryThe name Planck mass is a tribute to the German physicist Max Planck (1858 - 1947). |