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Formerly at the California Institute of Technology, Al Seckel is a leading authority on visual and other types of sensory illusions. He is the author of 15 books on this subject, including the classic The Great Book of Optical Illusions. He is also well-known for his illusion column in National Geographic Kids magazine.
The 300-page collection of visual shapes and images has far more than the usual figure illusions found in other books of this nature.--Sara Catherine Howard"Teacher Librarian: The Journal for School Library" (06/01/2007) The comprehensive collection of graphic patterns is mind-bending, eye-opening, and highly entertaining.--Reza"20 Best Puzzle Books, Multipotens Blog" (07/10/2017) American Library Association Quick Picks for Young Adult Reluctant Readers 2007--School Library Journal (03/01/2007) This book offers a comprehensive collection of more than 275 mind-bending images, hidden figures and eye-opening graphic patterns. Explanations ... offer readers insight into how optical illusions are created.-- (08/23/2007) [A] highly entertaining look at how our perceptions can be deceived... includes some handy notes about the science of visual perception, offering explanations about how our eyes truly can deceive us.-- (12/10/2006) Stunning images guaranteed to both befuddle and amaze you. Plus, it explains the science behind the illusion.-- (11/25/2006)