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Reflecting from inside the lightbox - or whatever that is called - back into the lens? That would account for the square shape. It's very strange though.
by Colman (colman at eurotrib.com) on Mon Mar 10th, 2008 at 05:31:49 AM EST
[ Parent ]
Diffraction?

Ad astra per aspera
by In Wales (inwales aaat eurotrib.com) on Mon Mar 10th, 2008 at 04:39:58 PM EST
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