Antimatter

As improbable as it sounds, every particle has an anti-particle. The suggestion was first made by P A M Dirac, the famous English mathematical physicist in the 1930's. His equations had alternative solutions. He postulated the existence of a positron - an anti-electron. It was found; he became famous.

A g-ray becomes an electron-positron pair in a hydrogen bubble chamber photograph (top left).

Electron/anti-electron annihilation conserves energy and momentum by producing two gamma rays. Gamma ray emission from e/anti-e annihilation has been found at the center of the galaxy. Antimatter exists. Bombs could be made. The problem is storage!

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