Why are CD's round and not square?

Baloo55th

'Cos the corners would be waste material - you couldn't store meaningful data on them. Jul 28 04, 3:01 PM

gmackematix

Because the laser that reads data on a CD rotates to follow a smooth tight spiral from near the hole gradually toward the outer edge. As Baloo suggests, data stored on material outside the usual area of a CD would be out of the range of the laser so would be a waste. Jul 28 04, 6:20 PM

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Why are movies/cds/dvds released on tuesdays? Why are mugs round? Why is the world round? Why are new CDs and singles always released on Tuesdays?

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