Class Notes, Feb 7:

These note are from our Feb 7 class, which was directed toward deepening out understanding of kinetic energy (momentum squared). Understanding kinetic energy and momentum is the the key to  understanding quantum physics, in my point-of-view. In classical physics, momentum and kinetic energy are generally associated with motion. In quantum physics, kinetic energy and momentum are associated with confinement. In quantum physics electrons can, and generally do, have significant momentum and kinetic energy without moving at all.

(note: The order I had in mind for these is indicated by the number in the upper right-hand corner of each page, not by their order below.)