The fact that quantities such as energy, mass and charge come in discrete and indivisible amounts, or quanta, is now so fundamental to our understanding of the Universe that it is often taken for ...

It's almost always the last topic in the first semester of introductory physics—angular momentum. Best for last, or something? I've used this concept to describe everything from fidget spinners to ...

This course introduces the quantum mechanical concept of angular momentum operator and its relationship with rotation operator. It then presents the angular momentum operators, their eigenvalues and ...