(A)musing Finds - Optical Illusion

An optical illusion is when the perceived image differs from reality.

3 major optical illusions are literal, physiological & cognitive.

Literal - create images that are different from the objects that make them

Physiological - effects on the eyes and brain of excessive stimulation of a specific type, eg brightness, colour, size, position, tilt and movement

Cognitive - resulting from unconcious inferences

Do you see the side or front image of a man?

Rabbit? Duck?

Illusions could happen when the individual is able to see an image in its' 3D form even though the image hitting the retina is only two dimensional.

Oh, fun fact 101 - girls can register optical illusions faster and more at ease than boys. :)

Source of text: Wikipedia

Earlier (A)musing Finds:
Water-powered clock
Butter knife