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Ponzo's Illusion


PonzosIllusion

The upper horizontal line segment in the above figure appears to be longer than the lower line segment despite the fact that both are the same length.


See also

Illusion, Müller-Lyer Illusion, Poggendorff Illusion, Vertical-Horizontal Illusion

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References

Fineman, M. The Nature of Visual Illusion. New York: Dover, p. 153, 1996.

Referenced on Wolfram|Alpha

Ponzo's Illusion

Cite this as:

Weisstein, Eric W. "Ponzo's Illusion." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PonzosIllusion.html

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