Plastic?
2006-12-02 14:45:52 · 4 answers · asked by humstu 1 in Consumer Electronics ➔ Other - Electronics
G.S. is very close, but incorrect regarding the reading process. 1 occur at a transition between the places which do not reflect and the places which do reflect. That transition can be either from one to the other or back during a specific period of time. If during a specific period of time no transition occurs, the beam does not reflect for a long time or the beam does reflect for a long time, then that is read as a 0.
As far as materials go, they vary a little. The most common is a combination of plastic and metal. There are some writable ones which also include liquids and dyes.
2006-12-02 15:35:18 · answer #1 · answered by Jack 7 · 0⤊ 0⤋
no wires. made from polycarbonate plastic encasing an extremely thin layer of aluminum filled with tiny holes. basically, a compact disc is read by a laser, which cause the reading of a 0 when the laser reflects off the aluminum, and a 1 when the laser goes through a hole and does not reflect. this results in a string, like "0001110101001," which is then decoded by the player and turned into sound, movies, data, etc.
2006-12-02 14:58:22 · answer #2 · answered by o_snap 3 · 0⤊ 0⤋
Plastic. If you want more details, just go to Wikipedia.org.
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2006-12-02 15:46:50 · answer #3 · answered by Anonymous · 0⤊ 0⤋
metal and plastic and wires
2006-12-02 14:52:17 · answer #4 · answered by Kayla 1 · 0⤊ 0⤋