Something Weird Happens When E=−mc²

Veritasium unpacks how Paul Dirac’s bold tweak to Einstein’s equation back in the 1930s sent physicists down the rabbit hole of negative energy and antimatter. Starting with the Schrödinger equation’s shortcomings, we trace Dirac’s journey through the Klein–Gordon equation, Heisenberg’s uncertainty principle, and finally the revolutionary Dirac equation that predicted a mirror world of “anti-electrons.”

Expect a rollercoaster of mind-bending ideas: the first glimpse of the positron, the sad tale of early experimental blunders, and the wild notion that antiparticles might just be particles traveling backward in time. Along the way you’ll meet the brilliant (and eccentric) Dirac himself and learn how his work laid the groundwork for our modern understanding of the anti-universe.

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