Classic Optical Illusions Author:Bob Longe, David Knowles, Charles Barry Townsend Do not believe everything you see, because these amazing, astounding, seemingly impossible illusions can "fool" your eyes. Open up this collection to view a wondrous array of optical effects: specks seem to move, grey spots appear and disappear, circles gyrate, patterns pulsate, and straight lines wave and bend. Shapes... more » and drawings keep you from distinguishing what's there, and make you perceive things that aren't. Objects appear different from a distance than they do close up. They'll forever change the way you look at things.« less