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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.

3 Examples of jobs related to the interference of light - Physics Forums Homework Statement Find 3 careers that are in some way related to the interference of light. Give a brief description of each career. Homework EquationsThe Attempt at a Solution My examples are X-ray Technician, Photonics Engineering and Optical Physics. My question is, is optical...