This article originally appeared on Slate.
By Phil Plait
Via my evil twin Richard Wiseman comes one of the best color optical illusions I have ever seen. The original was apparently posted on Buzzhunt Akiyoshi Kitaoka’s incredible optical illusion website:
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Edit to add: if you like this illusion, then you might want to check out this audio illusion, and this one of a spinning woman’s sillhouette which is one of my all-time favorites.
