How can a flat page have pictures that actually seem to move? That's what these 90 action illusions--the largest such compilation ever assembled--succeed in doing. Through the magic of visual effects, including the careful use of color and brightness, static images become animated and solid shapes deform right before your eyes. Some of the illusions appear to hover in the air; others produce afterimages of bright color or produce a sensation of swirling. In a number of cases, it's necessary to shift the entire page to get the trick, or to use peripheral vision for the full effect. You'll be stunned as perfect squares appear out of nowhere, patterns pulse, and yellow dots flash.
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