Sunday, May 18, 2014

Which circle is bigger ? - Awesome Optical Illusions

Look carefully at the center circles on both the left and right.
Which circle is bigger?

 Are you sure they aren't both the same size?  This relative size illusion is called the Ebbinghaus illusion.  It was discovered by Hermann Ebbinghaus, a German psychologist, in the early 1900s.

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