Ponzo's Illusion

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Psychologist Mario Ponzo proposed that people determine the size of an object by taking into account the object's background. This is a Demonstration of Ponzo's illusion in which the top line is perceived to be longer than the bottom line, as a result of their relative placement in the triangle. Observe whether a change in thickness, color, or placement affects the perceived change in length.

Contributed by: Pooja Nikki Bisarya (June 2016)
Open content licensed under CC BY-NC-SA


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Reference

[1] Wikipedia. "Ponzo Illusion." (Jun 8, 2016) en.wikipedia.org/wiki/Ponzo_illusion.



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