59:59
Dirac Lecture 1 (of 4) - Quantum Mechanics
Richard Smythe
1:04:59
Dirac Lecture 2 (of 4) - Quantum Electrodynamics
51:05
Dirac Lecture 3 (of 4) - Magnetic Monopoles
1:10:13
Dirac Lecture 4 (of 4) - Does 'G' vary? (Large Numbers Hypothesis)
