Light behaves like waves (sometimes). Longer wavelengths produce light toward the red end of the spectrum. Shorter wave lengths make light toward the other end, with colors like blue or violet.
This bit of optical trivia may not seem important, but it’s an essential fact in the creation of high-definition DVD discs and players, such as [...]
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HDTV Almanac - Blue Lasers in Peril?
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alfredpoor
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