Optical Puzzles: 270 Captivating Puzzles to Test Your Eyes and Brain Power

    Format:  Paperback   Author:  Gianni A. Sarcone & Marie Jo Waeber


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      This fascinating collection of 270 visual conundrums to test your perception and boost your intelligence presents many different types of illusion, from those that appear to spin or vibrate to hidden images and impossible figures. You will find: Size and shape illusions; Ambiguous and impossible figures; Brightness and movement illusions; Visual and cognitive tests. Each illusion is accompanied by

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