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Reflection UFOs Shadows

Knowledge

A bit of knowledge on optical illusions. Or scroll down to see what you came for.

Bezold effect fabric

Bezold Effect

sorrowful rock face pareidolia

How do optical illusions work?

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

Wall drilling illusion

Source/credit: Wahajube

This wall drilling illusion is very hard to understand:

The shadow below the drilled block is not from that block, but instead from something outside the frame, further in the background.

The block being drilled is right above the man drilling it.

More optical illusions:

Amish Men using a Truck

Goal perspective

In Search for Water

High-rise buidings

Scale Model of a Courtyard

Confusing pants

This is an optical illusion artwork by Kostya Terentev. Filmed from directly above, you can see only the shadows of the people.

Shadow Avatars

Shadows

Dog jumping giant hole illusion

Dog jumping a giant hole

Dogs