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twighead
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All mammals take 21 seconds to pee.
#19003026 - 10/20/13 08:37 AM (10 years, 3 months ago) |
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http://www.theverge.com/2013/10/19/4855076/the-law-of-urination-mammals-take-21-seconds-to-pee
Researchers at the Georgia Institute of Technology have discovered a new golden rule: every mammal takes about 21 seconds to urinate. Patricia Yang and her co-authors dubbed it the "Law of Orientation" in a paper published this week, and they say it applies across a wide range of animal sizes.
Yang and her team discovered this commonality after observing male and female cows, dogs, elephants, goats, and rats at the Atlanta Zoo. They filmed these animals urinating, taking note of their size, bladder pressure, and urethra length, and then searched for videos of other peeing animals on YouTube. Based on mathematical models derived from these data, the scientists found that every animal took an average of 21 seconds to relieve itself, despite bladders that varied in volume from 100 milliliters to 100 liters. The video below offers a more visual explanation.
That's not to say that animal size doesn't matter. According to Yang, it just doesn't have a significant impact. Prior to this study, most urination models focused on bladder pressure and relatively small mammals. As a result, they didn't take gravity into account.
As New Scientist explains, an elephant's long urethra — one meter, with a diameter of ten centimeters — gives its urine more time to pick up speed. Because of this, the animal can empty its enormous bladder in about the same time as goats, dogs, and other medium-sized mammals. For small mammals like rats and bats, gravity doesn't exert much influence on flow rates, which are instead determined by viscosity and surface tension. That's why they urinate in small drops, Yang says, finishing the job in less than a second.
The researchers will present their findings next month at the American Physical Society Division of Fluid Dynamics meeting.
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psi
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Re: All mammals take 21 seconds to pee. [Re: twighead] 2
#19003073 - 10/20/13 08:58 AM (10 years, 3 months ago) |
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Quote:
twighead said: a new golden rule
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hidenseek1
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Re: All mammals take 21 seconds to pee. [Re: psi]
#19003106 - 10/20/13 09:10 AM (10 years, 3 months ago) |
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the 21 second shower
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TrentBoyett
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Re: All mammals take 21 seconds to pee. [Re: psi]
#19003108 - 10/20/13 09:11 AM (10 years, 3 months ago) |
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Sometimes it only takes me a few seconds, but if I've been holding it for a while I've gone for probably ~2 minutes a few times.
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EdibleStereos
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Re: All mammals take 21 seconds to pee. [Re: TrentBoyett]
#19003123 - 10/20/13 09:18 AM (10 years, 3 months ago) |
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Yeah this sounds like BS.
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psi
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Re: All mammals take 21 seconds to pee. [Re: EdibleStereos]
#19003133 - 10/20/13 09:24 AM (10 years, 3 months ago) |
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EdibleStereos
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Re: All mammals take 21 seconds to pee. [Re: psi]
#19003198 - 10/20/13 09:49 AM (10 years, 3 months ago) |
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Quote:
psi said: Looks pretty legit to me.
http://arxiv.org/abs/1310.3737
You piss 21 seconds everytime? I dont, dogs dont, cats dont. Golden rule doesnt seem so golden aside from the piss.
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psi
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Re: All mammals take 21 seconds to pee. [Re: EdibleStereos]
#19003205 - 10/20/13 09:53 AM (10 years, 3 months ago) |
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Yeah obviously they're talking about averages, rather than saying it takes the same amount of time every time. The point is that you might expect a big difference in average times between mammals of wildly differing sizes, but apparently it works out to about the same.
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EdibleStereos
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Re: All mammals take 21 seconds to pee. [Re: psi]
#19003220 - 10/20/13 09:59 AM (10 years, 3 months ago) |
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Quote:
psi said: Yeah obviously they're talking about averages, rather than saying it takes the same amount of time every time. The point is that you might expect a big difference in average times between mammals of wildly differing sizes, but apparently it works out to about the same.
This article is just silly though.
It is logical that animals would have similiar rates for eliminating waste like that. It is a moment of weakness, so natural tendency would be for traits for fairly quick elimination.
It just seems common sense. But for the author to come up with a number of 21 seconds?
Just think in terms of evolution, a species wouldnt last long if it was exposed for 45 minutes while it pissed.
Edited by EdibleStereos (10/20/13 10:01 AM)
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404
error



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Re: All mammals take 21 seconds to pee. [Re: EdibleStereos]
#19003226 - 10/20/13 10:02 AM (10 years, 3 months ago) |
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that is also a stupid statement, as any animal can run while it pees
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404
error



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Re: All mammals take 21 seconds to pee. [Re: 404]
#19003228 - 10/20/13 10:03 AM (10 years, 3 months ago) |
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man, if you had a bladder that was big enough to drain for 45 minutes... dafuq
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EdibleStereos
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Re: All mammals take 21 seconds to pee. [Re: 404]
#19003236 - 10/20/13 10:08 AM (10 years, 3 months ago) |
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Quote:
StateOfMind404 said: man, if you had a bladder that was big enough to drain for 45 minutes... dafuq
Thats exactly the point, elephants, etc have massive bladders. But have appropriate sized body parts for appropriate releasing.
And running while pissing isnt exactly evolutionary progress.
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404
error



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Re: All mammals take 21 seconds to pee. [Re: EdibleStereos]
#19003247 - 10/20/13 10:11 AM (10 years, 3 months ago) |
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- they also have massive urinary dracts 
- nope, but it is a way to get away from a predator
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psi
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Re: All mammals take 21 seconds to pee. [Re: EdibleStereos]
#19003402 - 10/20/13 11:09 AM (10 years, 3 months ago) |
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Quote:
EdibleStereos said:
Quote:
psi said: Yeah obviously they're talking about averages, rather than saying it takes the same amount of time every time. The point is that you might expect a big difference in average times between mammals of wildly differing sizes, but apparently it works out to about the same.
This article is just silly though.
It is logical that animals would have similiar rates for eliminating waste like that. It is a moment of weakness, so natural tendency would be for traits for fairly quick elimination.
It just seems common sense. But for the author to come up with a number of 21 seconds?
Just think in terms of evolution, a species wouldnt last long if it was exposed for 45 minutes while it pissed.
Reporting on science topics is usually pretty crummy, probably more so when the topic is basically being milked for comedy/"weird news" value. The actual paper says 21 ±13 seconds.
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fapjack
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Re: All mammals take 21 seconds to pee. [Re: psi]
#19004040 - 10/20/13 01:38 PM (10 years, 3 months ago) |
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Well obviously none of those animals use copious amounts of ketamine of a regular basis.
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Mescalean
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Re: All mammals take 21 seconds to pee. [Re: fapjack]
#19004077 - 10/20/13 01:44 PM (10 years, 3 months ago) |
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Best time was 2:37 havnt been able to beat it for 3 years now
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KingKnowledge
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Re: All mammals take 21 seconds to pee. [Re: Mescalean]
#19004217 - 10/20/13 02:33 PM (10 years, 3 months ago) |
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Strange....I don't see any vast implications but still kinda cool?
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hidenseek1
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Re: All mammals take 21 seconds to pee. [Re: KingKnowledge]
#19004225 - 10/20/13 02:35 PM (10 years, 3 months ago) |
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that he hasnt pissed for more then 2 1/2 min at a time in three years?
qft
Quote:
KingKnowledge said: Strange....I don't see any vast implications but still kinda cool?
-------------------- You can drink at 7 A.M., because the Beastie Boys fought for that right -------------------------------------------------------------------------- pons asinorum -------------------------------------------------------------------------- lsd and the vietnam war changed music forever
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Mescalean
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Re: All mammals take 21 seconds to pee. [Re: hidenseek1]
#19004258 - 10/20/13 02:44 PM (10 years, 3 months ago) |
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That was one ive timed. My favorite is pissin on acid it looks like a stream of rainbow water
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twighead
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Re: All mammals take 21 seconds to pee. [Re: KingKnowledge]
#19005458 - 10/20/13 07:20 PM (10 years, 3 months ago) |
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Quote:
KingKnowledge said: Strange....I don't see any vast implications but still kinda cool?
The implications are vast. Trust me.
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