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A particle track curving in the opposite direction from an electron supplied evidence for the positron. The discussion connects that observation to the prediction and discovery of antimatter.
Transcript
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49:23>> Yeah. >> In 1931 1932 discovery of the posetron. >> This is the discovery of antimatter. Paul Dac had postulated that antimatter is something that should happen based on his DAC equation. Carl Anderson at Caltech. He discovered the posetron. There's the plate that shows that you've got a particle that is moving, but it's curling in the opposite direction to an electron, which means it must have the same mass as the electron, but it must have the opposite charge. And that's what he discovered.
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