Optical Illusions

optical: adj. of or having to do with the eye or the sense of sight.
illusion: n. a false impression or perception.

So...an optical illusion is a false perception of what you are seeing. Basically, your eyes are playing tricks on you! Optical illusions teach us about how the eye and brain work together to create vision. In our everyday three-dimensional (3-D) world, our brain gets clues about depth, shading, lighting, and position to help us interpret what our eyes see. But when we look at two-dimensional (2-D) images that lack some of these clues, the brain can be fooled.

Check out these optical illusions! What do you see?

Illusion 1
Are the two vertical lines straight or bent?

Illusion 2
Is this a picture of a vase, or two faces looking at each other?

Illusion 3
Which frog has a bigger mouth? Are you sure? Measure to find out.

CAGIS would like to extend a big thank you to Dr. Cheryl Letheren for providing us with her optical illusions, and her explanation of them.

For more "fun stuff", visit the clubhouse!