ARGH!!!  I am trying to make a lens which will generate parallel beams
of light with a spotlight put at it's focal point. I have tried using
some formulae from my physics book, but just can't get it. Is there
anybody out there who could help me?

-paul

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Paul Daniel Jones
120 Chandlee Laboratory
Penn State University
814-865-2090
pdj### [at] psuedu

http://research.chem.psu.edu/glassgrp/paul
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