This is a toilet thought, please ban me mods.
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- AbouBenAdhem@lemmy.worldEnglish1 day
The velocity is proportional to bladder pressure and inversely proportional to the square of the diameter of the urethra. The shape of the body parts outside the urethra is irrelevant.
- 1 day
This isn’t true because I can squeeze the tip of my foreskin and the pee will start spraying everywhere super fast. Similar to covering the end of a hose with my thumb.
- LurkingLuddite@piefed.socialEnglish1 day
Similar to the hose, your feeble attempts at restriction only make the stream stronger.
There is a fundamental pressure being restricted. IF she has a bigger urethra than you, she’ll wreck you. If she has a narrow urethra, she might be in the same support group as Hank Hill.
Either way, the fundamental limit of how much pee can flow will always follow a basic function.
I used to think that women had larger urethras than men because female catheters are larger. A post similar to this one caused me to do a bit of reading though. Women’s urethras are actually a little smaller on average. They can use larger stiffer catheters because their urethras are much shorter and almost straight. Men’s catheters have to be narrower because they have to be flexible to go through men’s longer curvier urethras.
- 1 day
I don’t even think you know what you’re talking about let alone what I’m talking about.
- AbouBenAdhem@lemmy.worldEnglish1 day
Because of the inverse relationship between velocity and diameter.
- 1 day
Damn crazy. Do you think the shape of someone’s genitalia has an effect on that velocity and diameter?
- tankfox@bookwyr.meEnglish1 day
The optimal genitalia for urination has zero length. Imagine a frictionless laminar flow from a razor edged hole in your torso!
- 1 day
I’ve definitely seen public bathrooms where the previous occupant may have been utilising this technique
- tankfox@bookwyr.meEnglish1 day
Laminar flow means exceptionally smooth and directional without any turbulence or spray, so this would make sense if you visited a bathroom that was spotlessly clean
In theory, maybe. Yet in the real world, enough foreskin to interfere with the flow makes for a smoother flow with no spraying.
- tankfox@bookwyr.meEnglish1 day
You should try a twist tie, wrench it shut like it’s bread you want to actually keep fresh instead of just twisting it up and tucking it under the loaf like most men do. See what happens!
- 1 day
Yes, partially covering the opening will increase flow speed, but it doesn’t matter how long the hose was before you covered it, so no penis is required to achieve that.
- Rappe@sopuli.xyzEnglish1 day
Now I’m sitting here wishing I had rifling in my barrel so the pee would come out spiraling like those nozzles on some power washers.
- FishFace@piefed.socialEnglish1 day
but the individual particles in the stream are going to follow a ballistic, not spiralling trajectory. I think the spiral nozzles have to rotate; they can’t just be rifled.
- psx_crab@lemmy.zipEnglish1 day
Likely slower due to the friction the fluid have to go through the length of the barrel. The benefit however is the accuracy it has and lower in decibel, as it act as an aiming device and a suppresor.
Your penis makes noise when you pee? The only noise I’ve ever heard is when the urine hits water/leaves/grass…
It sounds like a lawn mower in a kiddie pool full of spaghetti. Yours is silent?
Mine sounds more like me looking at how hot it is outside and thinking maybe later. Mostly quite, but a potential groan everyonce in a while.
- 1 day
A kiddie pool full of spaghetti is one place I haven’t yet tried peeing
Should I wait for the kids to get out?
Time to harass my wife and compare speeds based on the sound of our pee streams. ✌️
- 1 day
Caution advised, I have just received a theory from one of your scholarly peers that a phallus may act as a scilencer thus making your method ineffectual. Perhaps pee upwards at a 45 degree angle and then measure the height of each stream to derive velocity?
- farmgineer@nord.pubEnglish1 day
I thought most mammals had basically the same time (where diameter scales with bladder size) from a full bladder. I’m not sure if I’m misremembering that.
- 1 day
You’re so right! At least as long as you aren’t so small that surface tension forms droplets
It works for shitting, not sure if the same applies here but it’s possible
defecation duration is constant across many animal species – around 12 seconds (plus or minus 7 seconds) – even though the volume varies greatly
https://www.scientificamerican.com/article/the-physics-of-poop/
1 dayOf course there are other factors (how full and how big the baldder is etc.) but I do wonder if the diameter of the pipe is smaller in a penis, and maybe less stretchy/flexible, compared to vulva urethra.
