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Vinyl records, RPMs, and velocity. How does it work? - Physics Forums FWIW, CDs and DVDs are recorded with the disk moving at a constant linear speed, and the rotation speed does change while the disk is playing. Because the data is recorded digitaally, it is easy for the player to "measure" how fast it is playing the disk, and so the rotation speed of a CD is actuallly controlled by the disk that is being played.

Inkjet printers for occasional use - Physics Forums When printing on DVDs, I've found that the brand of disk can effect the color output. One brand came out grey, the other had a beige tint. So different brands of paper might also effect color. The only thing I could do was print test output and tweek the colors.

Question about whether UV light can penetrate a cardboard box B Some questions about humidity and storing DVDs in a closed cardboard box Jul 21, 2023; Replies 3 Views 1K.