An illusion is an object or drawing which appears to have properties which are physically impossible, deceptive, or counterintuitive. Kitaoka maintains a web page of beautiful optical illusions which appear to show rotation despite actually being stationary.

See also

Benham's Wheel, Bullseye Illusion, Café Wall Illusion, Freemish Crate, Goblet Illusion, Hermann Grid Illusion, Hermann-Hering Illusion, Impossible Figure, Irradiation Illusion, Kanizsa Triangle, Müller-Lyer Illusion, Necker Cube, Orbison's Illusion, Parallelogram Illusion, Penrose Stairway, Penrose Triangle, Poggendorff Illusion, Ponzo's Illusion, Rabbit-Duck Illusion, Scintillating Grid Illusion, Tribox, Vertical-Horizontal Illusion, Young Girl-Old Woman Illusion, Zöllner's Illusion

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Cite this as:

Weisstein, Eric W. "Illusion." From MathWorld--A Wolfram Web Resource.

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