Lecture 341 min 34 sec
General relativity
Geometry responds to mass and energy.
Follow the conceptual path from the equivalence principle to curved spacetime, geodesics, and Einstein's field equation.
Season 1 · remastered lesson
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41 min 34 sec · Captions: English · Español · Português · Français · Polski
Visual explanation
Explore the central idea
Motion is optional · static explanation always available
Read alongside
The Metric Tensor, Warp Drives, and Wormholes
The experiments, equations, and original papers behind the lesson.
Open the companion chapter →