Knowledge

Facts, science and history of optical illusions.
See all the articles or scroll down to see what you came for.

Billie Eilish drawn in 3D by Stephan Pabst

How do optical illusions work?

Feeling deflated

Source/credit: wowsuchwows

The lady in the white t-shirt sitting on the first seat (right behind the woman with the yellow shirt) has put het coat over the handle of her suitcase. Because it is partly touching her legs, it creates the optical illusion of a leg without a body just standing in the subway.