Reading Assignment 8

Most difficult part of the material

Using Ampere's Law, and thinking about the orbit of the electron as a current loop? I don't understand how this gives us the actual magnetic field (if it does). I thought that the electrons did not orbit the nucleus in perfect circles. I guess this is just a different way of looking at it.

Most interesting part of the material

Looking at the Hydrogen energy level predictions, and how they are split and the errors that Bohr, Sommerfield and Dirac made in their work. they seem to represent the energy levels quite well, even though they are just very approximate values.