I’m just wondering physically how is it possible? Why is it that if I wanna pick one song from the CD the player ‘knows’ where the song I want is?
In: Technology
Answer : this actually blows my mind also
You thought CD backside is smooth, but it is not. The fact is they are filled with little bumps. Troff and groves acts like 1 and 0 basically binary.
CD reader shines laser into the bumps, the light reflected indicated whether the spot is actually 0 or 1.
All of this is happening within nano seconds
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