21:47

L5.2 Interpretation of the Darwin correction from nonlocality

15:01

L4.4 Dirac equation for the electron and hydrogen Hamiltonian

25:51

L4.1 Scales and zeroth-order spectrum

54:24

26. Chernobyl — How It Happened

2:13:31

Sarah Paine EP 1: The War For India (Lecture & Interview)

13:07

L6.1 Zeeman effect and fine structure

1:10:43

Daniel Everett, "Homo Erectus and the Invention of Human Language"

22:56

L1.1 General problem. Non-degenerate perturbation theory