Bohr magneton
Unit of magnetic moment / From Wikipedia, the free encyclopedia
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In atomic physics, the Bohr magneton (symbol μB) is a physical constant and the natural unit for expressing the magnetic moment of an electron caused by its orbital or spin angular momentum.[4][5]
In SI units, the Bohr magneton is defined as
and in the Gaussian CGS units as
where
- e is the elementary charge,
- ħ is the reduced Planck constant,
- me is the electron mass,
- c is the speed of light.