Quantum Physics Made Relatively Easy:
In 1999, legendary theoretical physicist Hans Bethe delivered three lectures on quantum theory to his neighbors at the Kendal of Ithaca retirement community (near Cornell University). Given by Professor Bethe at age 93, the lectures are presented here as QuickTime videos synchronized with slides of his talking points and archival material.
Freeman Dyson called Bethe the “supreme problem solver of the 20th century.” Coming from Dyson, that’s praise indeed.