Knowledge

Facts, science and history of optical illusions.
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How to create optical illusion photos (for social media)

Inferior and Superior Mirages, and Fata Morgana

Parallax Effect

Best for Stairs

Source/credit: Kobi Levi Design

These are high heeled shoes, without a heel, designed by Kobi Levi. If you still can’t figure it out, place your hand over the white space where the heel isn’t.
Or perhaps these shoes are just best for stairs.

More optical illusions:

Geometric Shapes

Reflected rice fields

Hole in Cat

Cats

Door handle

Objects