Johann Joseph Oppel: Fascinating: Optical illusion has been unexplained since 1855

This optical illusion shows three vases. They form a pattern. Take a look at the top and bottom ends of the vases. If we say that each of the six lines is the same length, would you believe it?

This optical illusion shows three vases. They form a pattern. Take a look at the top and bottom ends of the vases. If we say that each of the six lines is the same length, would you believe it?

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