Optical illusion: The two orange circles are same size.

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$2.47
JoAnnFineArt

Joined May 2014

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Sizing Information

Large
8.5" x 5.2"
Medium
5.5" x 3.3"
Small
4.0" x 2.4"

Features

  • Removable, individually die-cut vinyl
  • Ideal for smooth flat surfaces like laptops, journals, windows, etc.
  • 1/8th of an inch white border around each design

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Artist's Description

Ebbinghaus illusion: the orange circle on the left appears smaller than that on the right, but they are in fact the same size.

The Ebbinghaus illusion or Titchener circles is an optical illusion of relative size perception. Named for its discoverer, the German psychologist Hermann Ebbinghaus (1850–1909), the illusion was popularized in the English-speaking world by Edward B. Titchener in a 1901 textbook of experimental psychology, hence its alternative ’"Titchener circles".

In the best-known version of the illusion, two circles of identical size are placed near to each other, and one is surrounded by large circles while the other is surrounded by small circles. As a result of the juxtaposition of circles, the central circle surrounded by large circles appears smaller than the central circle surrounded by small circles.

desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait

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