CD's as parabolic mirrors?

From: Chuck McManis <cmcmanis_at_mcmanis.com>
Date: Mon Dec 11 20:36:36 2000

>But why would it appear concave from the label side, and convex from the
>data side?

Come on folks, think about this! CD's are slightly parabolic to the label
side because the darn CD cases take moch more force to get the CD *out*
than they do to put the CD *in*. So when you grab a CD by its edges and
pull to get it out, it is flexed into a parabola toward the label. Many
people push on the center area when replacing CDs in the case and thus
never counter out this original flexing.

--Chuck
Received on Mon Dec 11 2000 - 20:36:36 GMT