Optical Illusion Tricks and ToysPresents more than sixty optical illusions that include tricks, drawings, and toys that can be assembled. |
Contents
SeeThroughs | 21 |
Spots and Colors | 35 |
Done with Mirrors | 47 |
Copyright | |
6 other sections not shown
Common terms and phrases
½ inch afterimage angle arrows ball begin bend blind spot bounce brain cardboard cereal cereal box circle Close one eye convex lens dark deck depth perception disc spins dots draw edge exactly faster file card Flipper floaters focus fold front glass glue grid happens Hold the pencil hole inch wide inches long inside jumping jacks lines in Illus look at Illus look directly looks like Illus Move your hand moving optical illusion notebook or typing notebook paper object Once periscope piece of paper pinwheel red square rolled paper seen in Illus sheet of notebook shown in Illus shows side slip the paper slits spin the disc Spinner spoon square stick figures stiff material straight edge string strip of paper sure Tape Illus things tiny trick tube turning rod turning the toothpick turntable typing paper viewing frame wheel