Poggendorff illusion
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English
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Poggendorff_illusion.svg/220px-Poggendorff_illusion.svg.png)
Etymology
[edit]Named after Johann Christian Poggendorff, journal editor who discovered the effect in figures submitted by Johann Karl Friedrich Zöllner in 1860.
Pronunciation
[edit]- Rhymes: -uːʒən
Noun
[edit]Poggendorff illusion (plural Poggendorff illusions)
- An optical illusion involving the misperception of the position of one segment of a transverse line that has been interrupted by the contour of an intervening structure.