How do you prevent splashing while peeing while standing? In search of the answer to this question, North American researchers tested different urinal shapes – and found the best shape: according to them, the basin should be narrow and elongated, with a narrow opening on the left and right. In addition, the interior must be curved. Scientists recently presented their findings at a US Physical Society fluid dynamics conference.
They emphasized that it is important that the urine stream does not hit the wall of the urinal at a 90 degree angle. Instead, a 30-degree angle is ideal, as seen in nature with dogs urinating against a tree. Such urinals can reduce splashing to a fraction, regardless of the size of the person urinating, and thus vastly reduce toilet cleaning costs, the researchers said during the presentation.
“Men Mark Themselves”
“The practice of marking territory with urine is abhorrent to most people,” reads a summary of the presentation. “Ironically, about half of the world’s population (men) accidentally marks the bathroom floor and themselves. The reason: urine accidentally splashing back.” The problem has been around since the urinal was invented more than a century ago, the summary said.
Attempts are already being made to make standing urination more hygienic. Printed flies or mini football goals, for example, should encourage men to aim better at the urinal.
“Significantly better”
The researchers from the University of Waterloo in Ontario, Canada, and Weber State University in Utah, US, tested different shapes of urinals for their tests. “Urinals with the described curves are significantly better than conventional designs,” she concludes.
Source: Krone
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