ELIF: How are audio and video stored on CDs and tapes?
In: Technology
The two are very different technologies.
CD which stands for compact disc. It stores the information in the form of digital infirmation that is burned onto the surface of the disc. The burning of information onto the disc is done using light which heats up the disc and rearranges the chemical composition of the disc’s surface to remember the information that we’re trying to store.
To replay the information that has been put onto a disc a light is shined onto the disc while it spins to replay what’s been stored on it.
Tape on the other hand, uses a magnetic technology to arrange the data on the reel of the tape. Unlike the CD technology, magnetic tape uses the same magnetic head to both record and replay the data.
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