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Physicists probe urination 'splashback' problem
BBC ^ | 6 November 2013 Last updated at 08:17 ET | James Morgan

Posted on 11/06/2013 6:05:41 AM PST by haffast

US physicists have studied the fluid dynamics of urine "splashback" - and found hygiene tips for men and women.

Using high-speed cameras, the team filmed jets of liquid striking toilet walls and studied the resulting spray.

Splashback was low when the jets were used close up with a narrow "angle of attack", said the Brigham Young University team.

They will present their their research at an American Physical Society meeting in Pittsburgh.

"In response to harsh and repeated criticisms from our mothers and several failed relationships with women, we present the splash dynamics of a simulated human male urine stream," reads their conference abstract.

But there is a more serious side to the research.

The work is led by Prof Tadd Truscott and Randy Hurd of the "Splash Lab" at Brigham Young in Provo, Utah, who jokingly refer to themselves as "wizz kids".

"People ask me, are you serious? I tell them yes, this may involve 12-year-old humour, but it's also a real problem," Prof Truscott told BBC News.

"We've all been in disgusting toilets with puddles on the floor - these places are a breeding ground for bacteria."

For example, the detergents used to clean hospital toilets could actually increase the spray of disease-causing bacteria, by reducing the surface tension of water, according to a recent study.

Chaotic spray

One might think the physics of aiming urination had already been summarised by the formula: "get it all in the bowl". But micturation is still a messier business than it needs to be, according to the research.

snip

(Excerpt) Read more at bbc.co.uk ...


TOPICS: Culture/Society; News/Current Events
KEYWORDS: hygiene; sitzpinkler
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"Taking measurements live "in the field" did not appeal to the scientists, so the duo built a urination simulator."

Well, that's a relief.

Techniques to reduce splashes

- Getting as close as possible - a smooth unbroken stream is better than droplets

- Angling the stream - aiming sideways or downwards instead of straight at the toilet water/wall

- Placing toilet tissue in the bowl to soften impact

- Hydrophobic coatings for toilets

- Being a "sitzpinkler" - sitting down instead of standing

1 posted on 11/06/2013 6:05:41 AM PST by haffast
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To: haffast

Minimizing the splash is simply a matter of the proper positioning of Jane Fonda.


2 posted on 11/06/2013 6:08:14 AM PST by NonValueAdded (It's not the penalty, it's the lack of coverage on 1 Jan. Think about it.)
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To: haffast

Yes, a credit to the sciences; you guys can be proud of your legacy.

Were the taxpayers billed for this horse sh*t?


3 posted on 11/06/2013 6:08:36 AM PST by Jack Hammer (American)
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To: haffast

I wonder how much taxpayer money went for this ridiculous study?


4 posted on 11/06/2013 6:08:41 AM PST by mosaicwolf (Strength and Honor)
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To: haffast

Go for the low angle of attack edge of the bowl method.


5 posted on 11/06/2013 6:08:43 AM PST by cripplecreek (REMEMBER THE RIVER RAISIN!)
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To: haffast

Applied physics. I wonder whether Leonard is involved at the urging of Sheldon.


6 posted on 11/06/2013 6:12:12 AM PST by Mercat
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To: haffast; Colofornian
Splashback was low when the jets were used close up with a narrow "angle of attack", said the Brigham Young University team.

Your tax dollars at work!

7 posted on 11/06/2013 6:13:29 AM PST by Alex Murphy ("the defacto Leader of the FR Calvinist Protestant Brigades")
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To: mosaicwolf
I wonder how much taxpayer money went for this ridiculous study?

Was looking in the article for any mention or connection with AGW glowbull warming. Seeing none, I'll presume, for now, that no taxpayer funds were involved.

8 posted on 11/06/2013 6:14:29 AM PST by C210N (When people fear government there is tyranny; when government fears people there is liberty)
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To: haffast

How much did we pay for this “discovery” that I (like millions of other men) personally observed several decades ago and have been practicing ever since?


9 posted on 11/06/2013 6:14:51 AM PST by ThunderSleeps (Stop obarma now! Stop the hussein - insane agenda!)
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To: ThunderSleeps

I’d like research done on the proper way to shake and dance so that last drop doesn’t go in the pants.


10 posted on 11/06/2013 6:17:47 AM PST by MNDude
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To: haffast

Lift the lid and it doesn’t splatter.


11 posted on 11/06/2013 6:20:24 AM PST by showme_the_Glory (ILLEGAL: prohibited by law. ALIEN: Owing political allegiance to another country or government)
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To: MNDude

What about taking a wide stance. As per the Senator. :)


12 posted on 11/06/2013 6:21:09 AM PST by Hang'emAll (If guns kill people, do pencils misspell words?)
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To: ThunderSleeps

If you aim to please, please aim.


13 posted on 11/06/2013 6:21:21 AM PST by PDGearhead (Obama's lack of citizenship)
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To: haffast

Many of these techniques (aside from sitting down) work for controlling the amount of foam generated from pouring beer.


14 posted on 11/06/2013 6:22:21 AM PST by Pearls Before Swine
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To: haffast

I live in the country, I go outside for number ones. Nature walk so to speak.


15 posted on 11/06/2013 6:22:46 AM PST by central_va (I won't be reconstructed and I do not give a damn.)
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To: haffast

Ich bin ein Stehpsreckler


16 posted on 11/06/2013 6:23:05 AM PST by BenLurkin (This is not a statement of fact. It is either opinion or satire; or both.)
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To: haffast
the splash dynamics of a simulated human male urine stream

Why did they need a simulator? I know of quite a few people who'd have been perfectly happy to volunteer for as long as the researchers provided them with free beer.

17 posted on 11/06/2013 6:23:56 AM PST by jdege
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To: haffast

I have a solution make skippy two feet longer and closer to the water, there it is.


18 posted on 11/06/2013 6:24:11 AM PST by Rappini (Veritas vos Liberabit)
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To: NonValueAdded

Urine trouble now


19 posted on 11/06/2013 6:24:22 AM PST by TurboZamboni (Marx smelled bad & lived with his parents most his life.)
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To: haffast
a smooth unbroken stream is better than droplets

Right... How are us old guys supposed to accomplish THAT? Take Viagra around the clock?

With my prostrate, I'm happy to even have drops!

20 posted on 11/06/2013 6:24:23 AM PST by Alas Babylon!
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