Orbital magnetic moment of an electron

$$ \vec{\mu} = - \left(\frac{e}{2m_e} \right) \cdot \vec{L}  =  - {γ} \ \cdot \vec{L}  $$

e/2me is called the gyromagnetic ratio γ

m determines the direction of the vector of the orbital moment of momentum L (its component in the direction of the external magnetic field) the unit is the Bohr magneton (e.ħ/2me=0,927.10-23 A.m2)

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