Knowledge

Facts, science and history of optical illusions.
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Types of Optical Illusions

Billie Eilish drawn in 3D by Stephan Pabst

Anamorphic optical illusions

Inferior and Superior Mirages, and Fata Morgana

Impossible Stair Railing

Source: JigglyPluMs

The closest leg of this impossible stair railing appears to be touching the ground. But it isn’t. It’s actually a terrible design, with one leg hovering off the floor.

Cover the end of the leg up with a finger and your brain will stop melting.

More optical illusions:

In Search for Water

Trees

Up or Down?

Cats