#190 : Same Length?

Although humans have 5 major senses, most of the information from the surroundings comes from the eyes, making sight a very important part of life. The eye contains many rods and cones and they gather information and send it to the visual processing part of the brain, the information is sent via electric signals. Optical illusions can be caused by the brain expecting to see something, and processing the eye's signals in a way that creates something that makes sense on one hand, but on further looking begins to make less sense.

My Favourites

Shadow Illusion Are the squares A and B the same colour?   Spinning Dancer Which way is the dancer spinning?   Impossible Waterfall? Is the water flowing uphill in this impossible waterfall?   The Butterfly A colourful butterfly?

Duck Or Rabbit? Is this a duck or a rabbit?   Hidden Faces Can you find his three daughters as well?   Blind Spot An amazing demonstration of your blind spot.   Impossible Prongs? Impossible prongs?

What Am I? Can you tell what this is a picture of?   Who Turned To? Who is missing?   Same Eyes? Are her eyes the same colour?   Parallel Cafe Wall Lines? Are the horizontal lines parallel?