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How do Blu-ray work?

Updated: 8/18/2019
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13y ago

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DVD players use a red laser light and blue ray players use a purple-blue almost Ultra violet laser making it possible to store more data. Or to quote from a portion of the related link "The blue-violet laser's shorter wavelength makes it possible to store more information on a 12 cm CD/DVD-size disc."

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Q: How do Blu-ray work?
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