Zöllner illusion
/ˈtsəːlnə
/noun
An optical illusion in which long parallel lines appear to diverge or converge when crossed by rows of short oblique lines.The Poggendorff illusion was actually derived from another famous illusion - the Zöllner illusion....
- It may be that the Zöllner illusion is caused by this impression of depth.
Origin
Late 19th century: named after Johann K. F. Zöllner (1834–82), German physicist.