CDs like laserdiscs before them are read with an infrared laser.
DVDs use a red laser, and Blu-ray does indeed use a blue-violet laser. The smaller wavelengths, plus the ability to do multiple layers, are indeed how they cram more data more densely onto a disc of nearly identical size.
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Video game news oriented community. No NanoUFO is not a bot :)
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My goal is just to have a community where people can go and see what new game news is out for the day and comment on it.
CDs like laserdiscs before them are read with an infrared laser.
DVDs use a red laser, and Blu-ray does indeed use a blue-violet laser. The smaller wavelengths, plus the ability to do multiple layers, are indeed how they cram more data more densely onto a disc of nearly identical size.
I stand corrected. thx