xeqache:

Four lectures, taught by Paul Dirac recorded in 1975. The first lecture here is on Quantum Mechanics, with links to the other three below. These are made of old spool tapes when the first camcorders were available in New Zealand. Although suffering a bit from age, these lectures are obviously a historical treasure.

Lecture on Quantum Mechanics

Lecture on Quantum Electrodynamics

Lecture on Magnetic Monopoles

Lecture on Large Number Theory

(Source: https://www.youtube.com/)