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Dirac equation

physics
Also known as: Dirac wave equation

Quick Summary

The Dirac equation, developed by physicist Paul A.M. Dirac in 1928, is a relativistic wave equation for the electron that merges relativity with quantum mechanics. Unlike earlier equations, it incorporates the principles of special relativity, treating space and time on equal footing.12

A key outcome of the Dirac equation was the prediction of electron spin, an intrinsic angular momentum that explains magnetic properties observed in atoms. Furthermore, the equation's solutions implied the existence of antiparticles, particles with the same mass but opposite charge to their ordinary matter counterparts. The positron, the antiparticle of the electron, was experimentally confirmed in 1932, validating Dirac's groundbreaking theory. This work laid the foundation for quantum electrodynamics and our understanding of matter and antimatter.132

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