2
$\begingroup$

This question already has an answer here:

I know the meaning of mass in classical physics, the ratio of force and acceleration. But what do we mean when we talk about the mass of an electron in quantum mechanics?

$\endgroup$

marked as duplicate by ACuriousMind, user36790, Sebastian Riese, John Rennie newtonian-mechanics Nov 19 '15 at 16:10

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.