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Veritasium: Something Weird Happens When E= mc

Something Weird Happens When E=−mc² takes you on Paul Dirac’s wild ride to reconcile quantum mechanics with relativity—only to stumble on negative-energy solutions that predict antimatter. After poking holes in the Schrödinger and Klein-Gordon equations and wrestling with Heisenberg’s uncertainty, Dirac’s eponymous equation not only forecast the positron but also hinted at a mirror “anti-world” where particles zip backwards through time.

This blend of deep theory and real-world detective work shows how one mathematical tweak sparked the discovery of the anti-electron, reshaped modern physics, and opened the door to questions about whole universes running in reverse.

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