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December 17, 2002
A: FROM MENTOR JOAN LUSK IN
RI
I found a useful site -How CDs Work , by Marshall Brain -
by using Ask Jeeves, and asking "How do CD's Work".
To break the system into its parts - the analog information
for sound and video has to be made digital, the little 1's
and 0's encoded on the CD,
and then a laser reads the 1's and 0's and software turns
them back into sound and pictures.
The July 1996 issue of Scientific American was about lasers
and CD's too.
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