CD's as parabolic mirrors?

From: Chuck McManis <cmcmanis_at_mcmanis.com>
Date: Tue Dec 12 15:59:09 2000

At 08:43 AM 12/12/2000 -0600, John Foust wrote:
>How about the possibility that the disc is warped slightly
>when it's punched from a larger piece of plastic?

That and Dwight's comments on the manufacturing process are also probably
spot on. Someone off list suggested that perhaps the plastic has a slightly
higher expansion co-efficient than the "label/backing" material which would
also account for it.

--Chuck
Received on Tue Dec 12 2000 - 15:59:09 GMT