Welcome to the 1520 Perfect Dictionary
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| Diffraction grating | |
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| DIFFRACTION GRATING Definition: (physics) A translucent screen upon which are ruled numerous fine opaque lines very close together that act like many parallel slits. They are used to obtain light of a very narrow range of wavelengths by selecting a small portion of the diffracted beam. __________________________________ See perfect type (1). See perfect feature (1). ____ See perfect form (1). See perfect screen (5). ____ See perfect line (1). See perfect closeness (1). | |
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 |