Magnets, how do they work? (part 2)

(Previous post: Part 1: Magnetic field) I will talk about the origin of the magnetic dipole construct here. Consider a loop of wire… You may have noticed that I posted an entry entitled “NMR and Spin flipping (part 2)” which has since disappeared. It turns out that wordpress doesn’t synch so well between its mobile […]

Spherical Harmonics and State Rotation

Working my way through Sakurai problem 3.18. I spent quite a bit of time thinking about how exactly to interpret the math that underlies this problem. Here’s the problem as written in my notebook: “18.) Consider an orbital angular momentum eigenstate |l=2, m=0>. Suppose this state is rotated by an angle beta about the y-axis. […]