20. The Einstein Equation (General Relativity)

Lecture 20 on General Relativity. This lecture covers: (1) the Einstein equation; (2) the stress-energy-momentum tensors for electromagnetic fields and perfect fluids; and (3) the connections between general relativity and Newtonian gravity in the static, weak field limit. Lecture slides with corrections can be found at: https://physicsunsimplified.com/