RESEARCHERS at Canada's University of Waterloo look to have achieved the holy grail of restroom accessories - a splashless urinal.
A ground-breaking study unveiled last week at the American Physical Society's Division of Fluid Dynamics meeting in Indianapolis demonstrated the urinal's superior performance, based on the same geometry as a nautilus cell which ensures the urine stream hits at a shallow angle no matter where it is aimed.
The Waterloo team noted that about half of the world's population "inadvertently marks bathroom floors, and themselves, through unintentional urine splash back".
"A surface designed to always intersect the urine stream equal to or smaller than the critical angle prevents splashback...we designed urinal surface geometries that effectively eliminate splatter by satisfying the splash-suppressing intersect criteria," they wrote.
"Our numerical and experimental validations show that our urinal designs are superior to the typical use of a popular urinal available on the market, as well as scenarios where urine streams are highly unstable," they added.
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