In this video, Veritasium dives into how Paul Dirac’s quest to marry quantum mechanics with relativity led to the mind-bending prediction of negative-energy solutions. What started as a “wrong” Schrödinger equation evolved into Dirac’s revolutionary wave equation—and with it, the concept of a filled “sea” of electrons that could create holes, later identified as positrons and the birth of antimatter.
Along the way, we get a peek at Dirac’s quirky personality, the Klein–Gordon equation, Heisenberg’s uncertainty principle, and ultimately the stunning idea that antiparticles might travel backward in time—hinting at a hidden “anti-universe” lurking beneath our own.
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