Eric Hartwell's InfoWeb

October 2004
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 Thursday, October 21, 2004  
Dancing almond optical illusion. Here's a nice optical illusion: a bunch of almond-looking things arranged in a particular pattern appear to undulate. Akiyoshi Kitaoka, the creator of this image, has a lot of other optical illusions, which are well worth checking out. 
Also, don't miss the confounding checkershadow illusion.
[via Boing Boing 7/12/2004]