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Huge Half-Life discovery found from a decades-old CD sitting in a storage unit (www.pcgamesn.com)
submitted 1 month ago by RmDebArc_5@sh.itjust.works to c/games@sh.itjust.works
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[-] Coelacanth@feddit.nu 3 points 1 month ago

Ah, that's what it was! I always thought it was just a different color for 0 and 1, today I learned! That makes more sense when I think about it.

[-] MeThisGuy@feddit.nl 7 points 1 month ago

CD - red laser

BlueRay - blue laser.. shorter wavelength --> more data on same size disk

and inbetween there was DL - dual layer
light scribe - could etch a picture on the top of the cd
and RW - rewriteable CDs

(CD is short for compact disc)

[-] captain_aggravated@sh.itjust.works 1 points 1 month ago

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.

[-] MeThisGuy@feddit.nl 1 points 1 month ago

I stand corrected. thx

[-] sugar_in_your_tea@sh.itjust.works 1 points 1 month ago

light scribe

I remember having one, but I never actually etched a picture onto the CD, it never seemed worth doing.

this post was submitted on 22 Sep 2024
219 points (95.1% liked)

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