a visual illusion wherein parallel lines seem to diverge whenever one of them is intersected by short diagonal lines slanted to one direction, and the other by lines slanting toward the opposite direction.

ZOLLNER ILLUSION: "The Zollner illusion, one of my favorites, is appropriately named for its founder and creator, a German astrophysicist by the name of Johann Karl Friedrich Zollner."
Cite this page: N., Pam M.S., "ZOLLNER ILLUSION," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/zollner-illusion/ (accessed September 26, 2021).