Poggendorff illusion
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The Poggendorff Illusion is an optical illusion that involves the brain's perception of the interaction between diagonal lines and horizontal and vertical edges. It is named after Johann Poggendorff (1796-1877), a German physicist who first described it in 1860.
In the picture to the right, a straight black and red line is obscured by a grey rectangle. The blue line appears, instead of the red line, to be the same as the black one, which is clearly shown not to be the case on the second picture.
[edit] External links
- Poggendorf Illusion
- Circular Poggendorf Illusion
- Poggendorf Illusion
- Explanation of the Poggendorff, Hering, and Zoellner illusions
- de:Poggendorff-Täuschung
| This page uses content from the English-language version of Wikipedia. The original article was at Poggendorff illusion. The list of authors can be seen in the page history. As with Psychology Wiki, the text of Wikipedia is available under the GNU Free Documentation License. |
