Albert Einstein’s birthday was a couple of weeks ago, but today we have a belated celebration. MinutePhysics has finally finished its series on Einstein’s “wonder year” discoveries of 1905. In the last video, we began learning about the Special Theory of Relativity. This time, we find out how that theory leads to the most famous equation in the world…

### Einstein’s Proof of E=mc²

### Review

You may want to review the Einstein videos we’ve already seen:

- Albert Einstein: Why Light is Quantum
- Albert Einstein: The Size and Existence of Atoms
- Einstein and The Special Theory of Relativity

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