12. Tensors versus tensor densities. Stokes theorem
1:26:20
13. Maxwell equations in any curvilinear coordinate system
1:16:14
8. Lie transport, Killing vectors, tensor densities.
3:36
what is significant figures
47:24
Sir Roger Penrose - The palatial twistor approach to Einstein lambda vacuums
58:48
What is a Tensor? Lesson 32: Tensor density examples. (REDUX)
59:41
P. Chruściel (Faculty of Physics, Univ. of Vienna): Entangled photons in a weak gravitational field
1:05:56
Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
1:03:37