Zoellner optical illusion. In both figures the lines are parallel.

---

Zoellner optical illusion. In the left figure the vertical black lines seem to be unparallel, but in reality they are parallel. In the right figure the horizontal brick lines are also parallel.

---

Size: 9000px × 4596px
Photo credit: © Peter Hermes Furian / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abstract, black, brick, education, effect, geometrical, geometry, illusion, illusions, illustration, line, optical, parallel, psychology, relative, row, science, symbol, tile, unparallel, visual, white, zoellner, zollner, öllner