1. Gravity is Geometry (General Relativity)

Lecture 1 on General Relativity. This lecture covers a brief introduction to general relativity, including: (1) the absence of absolute time and Euclidean space; (2) inertial frames and fictitious forces; and (3) a hint at the connection between gravity and spacetime geometry. Lecture slides with corrections can be found at: https://physicsunsimplified.com/