CD's as parabolic mirrors?

From: THETechnoid_at_home.com <(THETechnoid_at_home.com)>
Date: Fri Dec 8 11:33:10 2000

For years I've used them to reflect light inside a machine to read legends
on cards and such.

I've got flashlights, but theres never one when you need it...

Regards,

Jeff

In <3A30FE4A.20AD1D7C_at_coin.org>, on 12/08/00
   at 12:33 PM, John Tinker <jtinker_at_coin.org> said:

>I just noticed that sunlight reflecting off the top side of a CD focuses
>somewhat, maybe with a focal length of about 20 feet. Off of the data
>side, it spreads. I've tried it with several different types, and so far
>they all show the same effect. Would anyone care to explain why?


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THETechnoid_at_home.com
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Received on Fri Dec 08 2000 - 11:33:10 GMT

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