this post was submitted on 29 Jul 2025
336 points (98.3% liked)

Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ

63341 readers
196 users here now

⚓ Dedicated to the discussion of digital piracy, including ethical problems and legal advancements.

Rules • Full Version

1. Posts must be related to the discussion of digital piracy

2. Don't request invites, trade, sell, or self-promote

3. Don't request or link to specific pirated titles, including DMs

4. Don't submit low-quality posts, be entitled, or harass others



Loot, Pillage, & Plunder

📜 c/Piracy Wiki (Community Edition):

🏴‍☠️ Other communities

FUCK ADOBE!

Torrenting/P2P:

Gaming:


💰 Please help cover server costs.

Ko-Fi Liberapay
Ko-fi Liberapay

founded 2 years ago
MODERATORS
 
you are viewing a single comment's thread
view the rest of the comments
[–] DrDystopia@lemy.lol 5 points 1 week ago (1 children)

I knew about MD's, but I thought there was a metal alloy inside the CD-rw's heated up by laser, alligned/written with magnets?

[–] dethmetaljeff@lemmy.ml 17 points 1 week ago

It's a phase change alloy, when writing a high powered laser is used to melt the alloy, when it cools quickly it becomes opaque. When erasing, a lower powered laser heats up the disc and returns it to its transparent state. A reading laser isn't powerful enough to change the phases at all. So, you have the idea right... just no magnets involved.