false http://photo.goodreads.com/books/1177617824m/720333.jpg 720333 3 <div>First you see one thing, then another. The picture changes from one moment to the next, flip-flopping back and forth. That's an ambiguous illusion, and the ones in this largest-ever collection offer constant, pleasurable surprises. Sometimes, the perceptual shift occurs if you just stare at the visual puzzle long enough; in other cases, it's necessary to invert or rotate the image first. In one picture, it's a cat-and-mouse game as you try to discover where the mouse is hiding from the cat. Another image features two minstrels playing homage to William Shakespeare--but at first, only the familiar portrait of the bard may be apparent. Once the dual nature of the illusion reveals itself, you'll never see just one object again.<br></div> 706575 1 4 2005 SuperVisions: Ambiguous Optical Illusions (Super Visions) total:2|5:1|4:1|3:0|2:0|1:0| 2 9 2 0 720333 1402718292 9781402718298 2 0 4.50 http://photo.goodreads.com/books/1177617824m/720333.jpg http://www.goodreads.com/book/show/720333.SuperVisions_Ambiguous_Optical_Illusions 4 0 false Tue Nov 24 10:49:52 -0800 2009 Tue Nov 24 10:49:52 -0800 2009 720333 1402718292 9781402718298 2 0 4.50 http://photo.goodreads.com/books/1177617824m/720333.jpg http://www.goodreads.com/book/show/720333.SuperVisions_Ambiguous_Optical_Illusions 5 0 false Wed Dec 26 06:06:21 -0800 2007 Wed Dec 26 06:06:35 -0800 2007 http://www.goodreads.com/book_link/follow/8?book_id=720333