The conclusion of the lecture pair covering what the books won't tell you about Quantum Electrodynamics. Covers Green's Functions, Feynman Diagrams, and Legrangians (at least), as well as exactly why light goes all that way in a straight line without even moving.
Begins with a visualisation of a 4D rotation tidying up a loose end from Part 1.
Loading more stuff…
Hmm…it looks like things are taking a while to load. Try again?