Jastrow illusion

Look at these figures and say which one is bigger? Click on the button to answer

the first one is bigger the second one is bigger both are the same

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The Jastrow illusion is named after the American psychologist Joseph Jastrow, who discovered the illusion in 1889. The Jastrow illusion is an optical illusion where two identical figures are placed next to each other. Although they are both exactly the same size, one appears to be larger. The fact that the shorter side of one figure is next to the longer side of the other somehow tricks the brain into perceiving one shape as longer and the other as shorter, although it is unclear exactly why this is so.

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