Woah, first time i heard of this, i thought sanding it just kill it
visnae@lemmy.world 5 months ago
A better question would be how could you write to a cd multiple times without first sandpaper down the microscopic holes to make THE CDs smooth again. I mean, HOW?!
Annoyed_Crabby@monyet.cc 5 months ago
gex@lemmy.world 5 months ago
Writable CDs don’t store data on microscopic holes, they instead have a layer of pigment that changes color when heated by a laser.
“The writing process does not produce indentations (pits);” en.wikipedia.org/wiki/CD-R#:~:text=The writing pr…
CD-RWs have a coating that can change to its original when the laser heats it to a specific temperature (high heat to write, low heat to erase)
“To erase the disc, the write beam heats the amorphous regions with low power to about 200 °C.” en.wikipedia.org/wiki/CD-RW#:~:text=To erase the ….
Bitrot@lemmy.sdf.org 5 months ago
The pigment also degrades over time, eventually data will become inaccessible.