"Things You Wouldn't Know If We Didn't Blog Intermittently."
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.