Knowledge

Facts, science and history of optical illusions.
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Color Constancy Illusions

What Optical Illusions Reveal about You

How to create optical illusion photos (for social media)

Ghostrider

Source/credit: Skilax06md

This ghostrider is nothing more than a confusing shadow. Our brains fill in the rest.
The bike seat’s shadow forms the head and hair of the figure, and the wheel is casting the shadow for the figure’s torso and legs, and the shadow arm is from the seat post.

More optical illusions:

Impaled windshield

Cat portal

Back to School

Inappropriately Dressed

Misbehaving Shadow

Cats

Big Bird

Birds