The chessboard experiment
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=whwKdQyWMUk
This short animation shows how Professor Edward H. Edelson's checkershadow illusion (see http://web.mit.edu/persci/people/adel...) really does feature two squares of the same shade. The animation merely moves the square - there is no change of colour.
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