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How does compact disc work?

I know a compact disc stores music, videos, or files, but I'm curious about what actually happens when it's inside a CD/DVD drive. How does compact disc work to store and read data, and what role does the laser play in the process? I'd appreciate a simple explanation.

compact disc

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@Grace replied to Julia
3 weeks ago

A compact disc stores data as tiny pits and lands. A laser reads these patterns while spinning, converting reflected light into digital information for music, videos, or files.