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#204 – Cumrun Vafa: String Theory
Lex Fridman Podcast
The Discovery of Positrons and Antiparticles
Pauli suggests changing orbits to generate a new particle with opposite properties to the electron. Dirac initially thinks it's a proton, but it has the same mass as the electron. Dirac then speculates it's an undiscovered particle. Years later, Anderson discovers the particle, called positron, which aligns with Dirac's prediction. This confirms that every particle has an antiparticle, thanks to Dirac's work.
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