Thread: APOD illusion
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Old 06-10-2009, 12:01 PM
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avandonk
avandonk

avandonk is offline 		 
Join Date: Aug 2005
Location: Melbourne
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Her is another one, Both flat surfaces have the same brightness.

From here
http://www.uq.edu.au/nuq/jack/rivalry.html


Bert
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