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radioactive decay |
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radioactive decay [¦rād·ē·ō′ak·tiv di′kā] (nuclear physics) The spontaneous transformation of a nuclide into one or more different nuclides, accompanied by either the emission of particles from the nucleus, nuclear capture or ejection of orbital electrons, or fission. Also known as decay; nuclear spontaneous reaction; radioactive disintegration; radioactive transformation; radioactivity. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Eric Robin and his colleagues from the Centre des Faibles Radioactivites in Gifsur-Yvette, France, concluded that an asteroid hit the Pacific after they analyzed tiny particles found in seafloor sediments collected in the northwestern part of that ocean. The community was slowly going to sleep," says Laj, a geophysicist at the Centre des Faibles Radioactivites in Gifsur-Yvette, France. |
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