Electron-position annihilation is the process that occurs when an electron which is matter and a positron which is anti-matter[?] made and destroy each other producing two gamma rays of 511 keV. It is the opposite process as pair production.
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... The racial makeup of the town is 40.00% White, 48.41% African American, 0.30% Native American, 3.41% Asian, 0.00% Pacific Islander, 4.15% from other races, and 3.73% from ...