Ultimate Optical Illusions 2015 Calendar

Don't believe everything you hear--or what you see in this calendar! Each page of the "Ultimate Optical Illusions Calendar" features a visual conundrum that will amaze, amuse, delight, and sometimes deceive readers. White appears black, straight appears bent, and still appears in motion in this fun [...]
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Don't believe everything you hear--or what you see in this calendar! Each page of the "Ultimate Optical Illusions Calendar" features a visual conundrum that will amaze, amuse, delight, and sometimes deceive readers. White appears black, straight appears bent, and still appears in motion in this fun and informative calendar. Objects even appear and disappear right from the page! Each page features a full-color optical illusion, many so convincing that readers might not know they've been fooled until they check the caption, which details the visual trick.