Optical illusion

An optical illusion (also called a montasir) is an illusion caused by the eye and characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a perception that does not tally with a physical measurement of the stimulus source.

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There are three main types of visual illusion:

• Literal optical illusions that create images which are different from the objects that make them.
• Physiological illusions: they are the effects on the eyes and brain of over-stimulation of brightness, colour, size, position, tilt, movement.
• Cognitive illusions, the result of unconscious inferences (brain makes the wrong decision).

Illusory Motion:

This is a jpeg file, and a normal picture. Not a gif file or animation.

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Amazing 3D Photo:

This image is a combination of two photographs flickering back and forth. One is at a slightly different angle than the other one. Putting them together and switching back and forth between them quickly like this produces a 3D image.

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Are the dots in between the squares white, black or grey?

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Are the lines parallel or crooked?

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THIS IS AMAZING!

Silhouette Zoetrope

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And, for all the dirty minds out there..

Dirty Lamp:

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Paper Curves:

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Hairy Pits:

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Two Girls One Seat:

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Congratulations!

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