They look askew, but these lines are perfectly parallel. This effect is called the cafe wall illusion.
Where is the beginning, where is the end? Where is the interior, or is the exterior?
Difficult to understand the meaning of this figure and in particular to know exactly what is in the foreground.
Intersecting white lines on a black background. And like an impression of seeing their intersections become intoxicated.
A 3D impression emerges from this image. The circle in the center appears to be in the foreground.
Two face-to-face faces or a vase? Both.
The arrangement of all the elements is such that it looks like a white triangle stands out. This effect is called Kanizsa Pattern.
Fixing the dot in the center gives the impression that the two circles around it move.
What do you see ? A rabbit or a duck? Or maybe both.
The alternation of patterns gives the impression of seeing curved lines. But this is not the case.