Puzzling Optical Illusions (Dover Children's Activity Books) - Softcover

Crawford, Thomas

 
9780486401515: Puzzling Optical Illusions (Dover Children's Activity Books)

Synopsis

A rich assortment of visual mind-bogglers, including "impossible objects" ― constructions that look fine on paper but can't possibly exist in reality ― as well as pulsating patterns, vanishing spots, pictures that suddenly change into other configurations as you're looking at them, and much more. 60 black-and-white illustrations.

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