Kruskal Coordinates: Schwarzschild Black Holes

This lecture covers the Kruskal coordinates and Schwarzschild black holes in General Relativity. Topics include Einstein equations, geodesic equations, energy-momentum tensor, cosmological constant, Penrose diagrams, null coordinates, and the Kruskal diagram. The lecture also delves into the Schwarzschild metric, tortoise coordinates, and spatial surfaces with exercises on finding metrics and embeddings.