<Dd> μ = μ L + μ S (\ displaystyle (\ boldsymbol (\ mu)) = (\ boldsymbol (\ mu)) _ (L) + (\ boldsymbol (\ mu)) _ (S)). </Dd> <P> The interaction energy therefore becomes </P> <Dl> <Dd> U B = − μ ⋅ B = μ B B (M L + g S M S) (\ displaystyle U_ (B) = - (\ boldsymbol (\ mu)) \ cdot \ mathbf (B) = \ mu _ (B) B (M_ (L) + g_ (S) M_ (S))). </Dd> </Dl> <Dd> U B = − μ ⋅ B = μ B B (M L + g S M S) (\ displaystyle U_ (B) = - (\ boldsymbol (\ mu)) \ cdot \ mathbf (B) = \ mu _ (B) B (M_ (L) + g_ (S) M_ (S))). </Dd>

Who determined that electrons are located in energy levels