For anyone interested: the physical phenomenon is spin-orbit coupling. Here's a somewhat technical discussion of the classical version: https://mitpress-reque

For anyone interested: the physical phenomenon is spin-orbit coupling. Here's a somewhat technical discussion of the classical version: https://mitpress-request.mit.edu/sites/default/files/titles/content/sicm/book-Z-H-31.html#%_sec_2.11 https://mitpress-request.mit.edu/sites/default/files/titles/... and the quantum analog: https://en.wikipedia.org/wiki/Spin%E2%80%93orbit_interaction https://en.wikipedia.org/wiki/Spin%E2%80%93orbit_interaction