12 December 2017

All the horizontal lines are identical

They just look different from one another.  Some look to be continuous sine-wave curves, while others resemble staggered split-rail fences.  But they all have the same shape.  The optical illusion arises from the way they are colored.

The illusion was developed by psychology professor Kohske Takahashi of Chukyo University.  Via Neatorama.


  1. They’re not identical. They’re colored differently.

    1. I'm going to print out this reply and hang it on my wall. To remind myself not to give in to my own tendency to place snarky comments like these. Anonymously. (Whoops, there I went again.)

      OT: Wow!


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