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Delboeuf Illusion


DelboeufIllusion

An illusion due to Franz Joseph Delboeuf, a Belgian philosopher and expert on hypnosis. If the same circle is placed inside two different concentric circles, its size will apparently vary.


See also

Titchener Illusion

This entry contributed by Margherita Barile

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References

Nagoya Visual Illusion Experts Group. "Delboeuf Illusion." http://humanities.lit.nagoya-u.ac.jp/~illusion/gallery/NVEG/standard/Delboeuf01_e.html.

Referenced on Wolfram|Alpha

Delboeuf Illusion

Cite this as:

Barile, Margherita. "Delboeuf Illusion." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/DelboeufIllusion.html

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