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Radioactivity
The spontaneous emission of radiation, generally alpha or beta particles, often accompanied by gamma rays, from the nucleus of an unstable isotope. Also, the rate at which radioactive material emits radiation. Measured in units of becquerels or disintegrations per second.
A service to the public by The U.S. Nuclear Regulatory Commission (NRC).
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International Codes INDEX:List of Terms: Terms beginning with "A", Page 1 |
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Page Number:
1 A: Page 1 of 1. |
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