Friday 22 March 2013

Are These Lines The Same Height?


Your answer depends on where you're from. In the late 1800s, German psychiatrist Franz Müller-Lyer designed one of the world's most famous visual illusions. Which of the following two vertical lines above is longer?

If you're like almost everyone whom Müller-Lyer tested, Line B will appear longer than Line A. In fact, the two lines are identical in length. But not everyone sees that. It all depends where you're from.

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