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Today in History: Carl David Anderson discovers positron, proves antimatter's existence

8/2/2025

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Story summary

On August 2, 1936, Carl David Anderson at the California Institute of Technology confirmed the existence of antimatter by discovering the positron, the electron's antiparticle. This groundbreaking work earned him the Nobel Prize in Physics, marking a significant advancement in modern physics and our understanding of particle interactions.

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Story summary

On August 2, 1936, Carl David Anderson at the California Institute of Technology confirmed the existence of antimatter by discovering the positron, the electron's antiparticle. This groundbreaking work earned him the Nobel Prize in Physics, marking a significant advancement in modern physics and our understanding of particle interactions.