this post was submitted on 22 Sep 2024
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Games

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[โ€“] captain_aggravated@sh.itjust.works 1 points 1 month ago (1 children)

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.

[โ€“] MeThisGuy@feddit.nl 1 points 1 month ago

I stand corrected. thx