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Einstein Thought Experiments

Watch visualizations of ideas that helped Einstein devise his theories of relativity and of the equivalence principle.
Publish Date: Topic: Physics + MathPhysics & Math

Albert Einstein famously used thought experiments—experiments carried out in the mind only—to work out complex ideas. Here, watch animations of Einstein chasing a light beam (which helped lead him to his theory of special relativity) and riding an elevator in free-fall (which convinced him that gravity and acceleration are one and the same). Finally, see a visualization of one of the basic concepts of general relativity—that bodies like stars and planets warp the "fabric" of space-time.

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