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Veritasium: Something Weird Happens When E=-mc

Something Weird Happens When E=-mc² dives into Paul Dirac’s wild journey from wrestling with negative-energy solutions in the Schrödinger equation to crafting the Dirac equation that not only fixed those issues but also predicted the existence of anti-electrons (positrons). Along the way, you’ll meet “the strangest man in physics,” explore the Klein–Gordon equation’s shortcomings, and learn how antiparticles can be thought of as particles traveling backward in time.

With expert commentary from Graham Farmelo and Cumrun Vafa, this video unpacks the pivotal moments in early quantum theory—Heisenberg’s uncertainty principle, Dirac’s mathematical breakthrough, and the bittersweet saga of antimatter’s discovery—painting one of the most surreal chapters in modern physics.

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