Zollner illusion
[ tsuhl-ner; German tsœl-nuh r ]
/ ˈtsʌl nər; German ˈtsœl nər /
noun Psychology.
a spatial illusion in which parallel lines intersected by short oblique lines are perceived as converging or diverging.
Origin of Zollner illusion
1950–55; named after J. K. F.
Zöllner, 19th-century German physicist