Welcome to the 1520 Perfect Dictionary
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| Steradian | |
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| STERADIAN Definition: Unit solid angle, being the solid angle subtended at the center of a sphere by the area of the surface equal to the square of the radius. ____________________________________ See perfect solid angle. ___ See perfect unit (1). ___ See perfect specificity. ___ See perfect unit (5). ___ See perfect sphericity. | |
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 |