Knowledge

Facts, science and history of optical illusions.
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How do optical illusions work?

The history of optical illusions in art

Can animals see optical illusions? Hosico cat shows it with optical illusion rug

Animals and optical illusions

Transparent Car Key

Source/credit: adamebgr

This transparent car key isn’t made of crystal. It is just perfectly reflective.

The make your brain see reality instead of the optical illusion, look at the keyring going through the hole. If the key was transparent, you would see the keyring behind the key. However, you can see its reflection.

More optical illusions:

Goblin spy on a plane

White Egret

Enormous cat napping

Sunken police car

Perfectly Polished

Cars

Calm Lake

Cars