The proof starts from two sets of equations:<p>1. Newton&#x27;s second law (first year undergraduate)<p>2. Commutation relations in QM (2nd or 3rd year undergraduate)<p>To make the desired connection, one must have seen Maxwell&#x27;s Equations (which some first year undergraduate physics textbooks include).<p>There is no need to assume graduate level physics; someone having done a B.Sc. in Physics should know more than enough to follow this derivation.