Optical Illusion Magic - Visual Tricks and Amusements by Michael A. DiSpezio

Cool distortions, a perplexing parallel pattern, afterimages, 3-D foolery, a shady comparison, imaginary interference, flip flopping faces, and other optical illusions will "trick" you into seeing what isn't there! There's one thing you can be sure of, when it comes to optical illusions: appearances are always deceiving!