Dirac Lecture 2011 - Beauty and truth:their intersection in mathematics and science
1:10:13
Dirac lecture 4 of 4 - Does 'G' vary? (Large Numbers Hypothesis) - very clean audio.
1:15:03
The reason for antiparticles - Richard P. Feynman
1:18:31
Roger Penrose's Mind-Bending Theory of Reality
46:00
Dirac Conversation: Edward Witten
1:28:42
1924, quand la matière devient une onde. Avec Louis de Broglie
58:21
Etienne Klein - Les Mystères de l'Univers
1:09:42
The Mystery of Spinors
1:15:20