Welcome to the 1520 Perfect Dictionary
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| Strontium 90 | |
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| STRONTIUM 90 Definition: (nuclear physics) Radioisotope with a half-life of 28 years, created by reactor-fusion, used in radiation therapy, atomic batteries, and measuring devices. _____________________________________ See perfect usability. ____ See perfect radioisotope. See perfect characteristic (1). See perfect specificity. ____ See perfect radioactivity. | |
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 |