Randal L. Schwartz wrote:
> So what is the answer?  Can you make a Prism that works, breaking
> white light into a rainbow?

http://www.povray.org/documentation/view/3.6.1/424/
:-)

-- 
William Tracy
afi### [at] gmailcom -- wtr### [at] calpolyedu

    [Mars was] mineral; not animal, nor vegetable, nor viral. It could 
have happened but it didn't. There was never any spontaneous generation 
out of the clays or the sulphuric hot springs; no spore falling out of 
space, no touch of a god; whatever starts life (for we do not know), it 
did not happen on Mars. Mars rolled, proof of the otherness of the 
world, of its stony vitality.
    And then, one day...
     -- Kim Stanley Robinson, _Red Mars_

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