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1 .This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?
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2 .Gentlemen, do you suffer from...splash-back?
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3 .You know, the spray that flies up when urine stream hits urinal or toilet bowl.
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4 .Well, help is at hand.
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5 .Researchers at Brigham Young University have figured out how to minimize splash-back.
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6 .First the scientists simulated a male's flow.
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7 .They used high speed cameras to record streams of colored water hitting various targets at different angles and distances.
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8 .Turns out the streams travel only six or seven inches before breaking up into droplets.
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9 .As the stream's source moves farther away, the impact velocity of the droplets increases, and they produce larger splashes.
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10 .The work will be presented at a meeting of the American Physical Society's Division of Fluid Dynamics.
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11 .Clearly, reducing stream distance will cut down on splash-back.
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12 .Which is why the researchers suggest that men sit rather than stand.
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13 .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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14 .That way, you won't sprinkle when you tinkle.
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15 .Thanks for the minute, for Scientific American 60-Second Science.I'm Sophie Bushwic.
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