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Urine Back Holes Created by Physicists to Solve the Splash-back Issue

By Kanika Gupta | Update Date: Nov 30, 2015 05:00 PM EST

Physicist they say have the solution to nearly all the problems. It was proved yet again when they found the optimal answer to the urine splash back problem, the answer was the "urine black hole", where it all goes in without coming out. The abstract of the recent work in the dynamics of urine splash back by Tadd Truscott, director of Utah State University's Splash Lab, and his graduate student, Randy Hurd, begins rather rhetorically, "Since the mid-19th century, both enlisted and fashion-conscious owners of khaki trousers have been plagued by undesired speckle patterns resulting from splash back while urinating." The results were shown this week by Hurd at the meeting of American Physical Society's Division of Fluid Dynamics in Boston.

The classic technique to avoid the splash back is by standing close enough to the urinal so that you can aim the stream towards the urinal's back. However, not all men care about their splashes they leave behind and this is why Hurd and Truscott shifted their focus to creating urinal inserts that will keep the washrooms clean even when the people who use it, don't. They came up with the design that would "suppress the splash for you even if you have poor technique." Or if you are too lazy to pay attention to where you are peeing, says Gizmodo.

Truscott and Hurd told Gizmodo via an email, they had no clue about the urinal inserts and all the science that is an integral part of its design. The urinal insert that the duo designed was a product of intense research. They incorporated the black hole equivalent in the design element of the urinal insert. "While we find the connection to urinals interesting, we are confident that the scientific community will have interest in the interaction between the splashing droplet and the pillars, and understanding how pillars can be used to suppress the splashing of impacting droplets," Truscott and Hurd said.

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