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"Graphic artist Robert Ausbourne" reveals the mystery behind a wide spectrum of optical illusions in this fascinating, full-colour book. Entertaining turn-of-the-century illusions are presented along with impossible 3-D objects, including diagrams that show how to create these complex figures. Other chapters focus on colour perception, afterimages, ambiguous figures and illusions in nature. Over 300 colourful illustrations by the author and other talented artists supplement classic examples, all of which are accompanied by text and captions that explain the history, technique, or effect of various types of illusions.