Welcome to the 1520 Perfect Dictionary
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| Beta disintegration | |
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| BETA DISINTEGRATION Definition: (particle physics) Radioactive disintegration of a nuclide with emission of a beta particle or a neutrino or an antinutrino and an increase or decrease of the atomic number by one. __________________________________ See perfect beta decay. | |
1520 Products |
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1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way. |
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 1520 Sex Game |
 1520 Puzzles |
 1520 Marriage Game |