O4 Optical Illusions

Here you will find an assortment of illusions based on both optical and psychological phenomena.

Articles
Image	Title
	O4-01: SCIENCE Trick the unwary student
	O4-02: PARIS IN THE SPRING - EXPECTATIONS Show how your mind affects what you see.
	O4-03: OPTICAL ILLUSION SLIDES - BLACK AND WHITE Show some classic optical illusions.
	O4-04: OPTICAL ILLUSION SLIDES - COLOR Demonstrate color illusions.
	O4-06: OPTICS OF A GLASS ROD Generates discussion about the variation of index of refraction with color
	O4-08: GREEN TOMATO Generates discussion about the variation of index of refraction with color
	O4-12: SAWING LASER BEAM WITH COMB Produce small segments of sawed off laser beam.
	O4-21: TRAVELING LIGHT ILLUSION Classic travelling light illusion.
	O4-22: CORNSWEET ILLUSION Classic Cornsweet illusion with circular rotating discs.
	O4-23: LIGHT PISTON Illusion of size and distance perception due to lack of sufficient reference points.
	O4-24: DISTORTED FACE ILLUSION Classic distorted face illusion.
	O4-25: RINSING ILLUSION Demonstrate one type of "rinsing" illusion.
	O4-31: TRAPEZOIDAL WINDOW Classic depth illusion.
	O4-32: SIZE OF COLORED FIGURES Classic size illusion with a humorous twist.
	O4-33: IMPOSSIBLE TRIANGLE Classic impossible triangle illusion with a twist.
	O4-34: IMPOSSIBLE CRATE Impossible crate illusion.
	O4-35: WALK-IN BOX Demonstrate an impossible figure in a dramatic way.
	O4-36: PERSPECTIVE BOX - CHAIR Perspective illusion.
	O4-51: ANAGLYPH Demonstrate creation of three-dimensional effects using red and blue images.
	O4-52: POLARIZATION 3D EFFECT Demonstrate use of polarization to produce 3D.
	O4-53: STEREOGRAMS - 3D IMAGES FROM RANDOM PATTERNS Stereoscopic view from repeated patterns.
	O4-54: VIEWMASTER Three-dimensional photographs.