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Irradiation Illusion


IrradiationIllusion

The illusion shown above which was discovered by Helmholtz in the 19th century. Despite the fact that the two above figures are identical in size, the white hole looks bigger than the black one in this illusion.


See also

Illusion

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References

Pappas, T. "Irradiation Optical Illusion." The Joy of Mathematics. San Carlos, CA: Wide World Publ./Tetra, p. 199, 1989.

Referenced on Wolfram|Alpha

Irradiation Illusion

Cite this as:

Weisstein, Eric W. "Irradiation Illusion." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/IrradiationIllusion.html

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