SuperVisions Stereo Optical Illusions - Supervisions Author:Al Seckel These amazing artistic optical illusions have real depth—that’s because they’re in 3-D! Some have to be viewed through a pair of red and blue paper glasses, which come with the book: put them on and watch decorative cubes, towers, and other complex geometric drawings spring to life, gaining volume and space. Other illusions are... more » visible to the naked eye, with incredibly elaborate and colorful designs that seem to pop—waves of flowers, a crescent man in the moon, a coiled dragon, a blazing sunset. With a range of different visual tricks on display, and eye-popping pictures that include antique stereoscopes and hidden images, this collection is truly incredible.« less