Knowledge

Facts, science and history of optical illusions.
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The history of optical illusions in art

Inferior and Superior Mirages, and Fata Morgana

Ambiguous illusions

Two giants

Source/credit: M3COPT3R4

These two giants are the results of forced perspective. They are actually standing on the bucket of a backhoe.
An interesting fact is that this is how they used to created giants in movies before CGI.

More optical illusions:

Fried Chicken Tenders

Magic Sword

Videos

Deflated dog

Dogs