Geek Fact for August 2nd

In 1932, the positron was discovered by Carl D. Anderson.

The positron has the same mass as an electron but the opposite charge. This differs from a proton that has an opposite charge from an electron, the same as a positron, but not the same mass as an electron.

Learn more at http://www.wisegeek.com/what-is-a-positron.htm

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