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General Relativity Lecture 1 (September 24, 2012) Leonard Susskind gives a broad introduction to general relativity, touching upon the equivalence principle.
PHYSICS 62 RELATIVITY
Einstein Field Equations - for beginners! Einstein's Field Equations for General Relativity - including the Metric Tensor, Christoffel symbols, Ricci Cuvature Tensor, ...
General Relativity Topic 20: The Schwarzschild