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This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?

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Gentlemen, do you suffer from...splash-back?

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You know, the spray that flies up when urine stream hits urinal or toilet bowl.

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Well, help is at hand.

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Researchers at Brigham Young University have figured out how to minimize splash-back.

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First the scientists simulated a male's flow.

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They used high speed cameras to record streams of colored water hitting various targets at different angles and distances.

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Turns out the streams travel only six or seven inches before breaking up into droplets.

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As the stream's source moves farther away, the impact velocity of the droplets increases, and they produce larger splashes.

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The work will be presented at a meeting of the American Physical Society's Division of Fluid Dynamics.

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Clearly, reducing stream distance will cut down on splash-back.

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Which is why the researchers suggest that men sit rather than stand.

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But if you do stand, try to create a smaller angle between the urine stream and the surface, and aim for the porcelain rather than the water.

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That way, you won't sprinkle when you tinkle.

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Thanks for the minute, for Scientific American 60-Second Science.I'm Sophie Bushwic.

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