Knowledge

Facts, science and history of optical illusions.
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Forced Perspective

Types of Optical Illusions

Bezold Effect

Reflective bird

Source/credit: Dannie Le’Moon

This is shot through a window and the darkness on the bird revealed the reflection on the window, frame of window visible bottom left. It looks like a reflective bird.

More optical illusions:

Inappropriately Dressed

Thats the cat's pajamas

Bicycle wheels on a truck

Painting of the Ocean

4 people

People

Big Dog

Dogs