Wundt Block Illusion


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Wundt block illusion


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Copyright © 1996-2017 Alexander Bogomolny

Wundt Block Illusion

This one is named after the 19th century German psychologist Wilhelm Wundt. It is also often ascribed to the psychologist Joseph Jastrow. Two laminas are exactly the same, although the lower one appears longer and not as tall, especially when one of their edges made collinear. (Both laminas are moveable.)

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Copyright © 1996-2017 Alexander Bogomolny

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