Something Weird Happens When E=−mc²

Veritasium takes you on a wild ride through Paul Dirac’s struggle with negative energy, showing why Schrödinger’s and Klein–Gordon’s equations fell short and how Dirac’s own equation not only fixed the math but predicted a whole mirror universe of antimatter.

Packed with expert insights from Graham Farmelo and Cumrun Vafa and digs into archives at FSU and Caltech, you’ll learn how the anti-electron (positron) came to light, why antiparticles can be thought of as time-travelers, and what all this means for the idea of an “anti-world.”

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