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About Optical Illusions

Optical illusions fool us because our brain gets confused at what our eyes actually see.  For example, when you see two squares that appear to be completely different in colour,  one appears dark and the other appears light.  In reality, they are both the same colour.  Our brain gets confused because the squares around the square that appears dark are light, and the squares around the one that appears light are dark.  In order to see them as the same colour, you must have light squares around both of them.  Another example of when our brain gets confused is where two lines with arrows going opposite ways on each line that seem different in length are, in reality, the same length.  The reason they look different is because the way the the arrows are pointing make us look at them differently!

We hope you learned something about optical illusions from this.