Naked Science Forum
On the Lighter Side => That CAN'T be true! => Topic started by: JnA on 26/12/2008 10:20:31
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(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Ffp_images.s3.amazonaws.com%2Fthis-is-the-way-to-pour-tea.jpg&hash=213350e03964fd9f70eb44ceea41cc9a)
I think a person wouldn't be able to exhale hard enough to get such a strong flow...
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Well... perhaps if they did it in one big burst
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Either that or the woman has incredibly big and powerful lungs.
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I bet she won't be allowed in that tea-shop again [:)]
Now these are powerful lungs: blowing up a hot water bottle til it bursts ... http://uk.youtube.com/watch?v=R3aQdh1QfHo
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WOW! Thats amazing!
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I wonder if she can inflate a hot water bottle like that too.
Here's a story (http://www.ananova.com/news/story/sm_2501841.html?menu=news.quirkies) about a man who can inflate them using his nose! [:0]
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Now there are some powerful lungs, not to mention the diaphram muscle and intercoastal muscles!
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I struggle to inflate a paper bag [:(]
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The hot water bottle was impressive.. but I still think I could do that over the tea pot thing... I might go a find myself a teapot... (short and stout)
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Could be interesting if the tealeaves get stuck in the spout [;D]
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I might go a find myself a teapot... (short and stout)
It might depend on whether you can get your mouth to the (what do you call that thing???) end of the pouring thing. That way you can blow on it like through a straw.
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I bet she won't be allowed in that tea-shop again [:)]
Now these are powerful lungs: blowing up a hot water bottle til it bursts ... http://uk.youtube.com/watch?v=R3aQdh1QfHo
That is so unreal!! Wow..
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I am with Doc.. I haven't enough wind to blow up a bag either!
My sons ears nose and Throat Doctor can
ow up Balloons and lots of oher odd things with his nostrils!!! It is so odd!
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According to my calculations she's making about 0.5 psi or something a bit more, it's nothing special- a normal party balloon is about 1.5 psi.
But why don't you guys actually try it? It's called ... science!
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It is a lot easier if the object that represents the "tea" is actually made of glass.....
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According to my calculations
How do you calculate something this?
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Okay - we'll kitchen science it. I'll chat do dave about how we can do it without soaking our equipment though!
Edit - regardless of lung power, i expect that most teapots wouln't create such a neat and tidy stream - I expect I'll have to get wet trying.
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Awh, I would trust our Wolfekeeper on that :) Mr Chem.
It should have to do with the amount of space inside that teapot and the length and diameter of that teapots 'pipe' I think? :)
But probably I'm missing out on some important factors..
On the other hand, it's probably just that kind of things that allows me to be soo 'free thinking' in my 'conclusions' ::))
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Btw: Is all female scientists as sweet looking as her.
I need a change of profession here:)
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She's not a scientist, she's just the tea lady! [:)]
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With very big lungs.
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And a whole lotta tea! [:)]
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Yeah, it works. I think you'd need to set the photo up a few times to get the jet going into the cup like that, but in principle it doesn't take all that much breath.
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Ah Rosy Rose, it's you then, is it? :)
Now Missus Rose, what i first noticed enjoying your picture was that 'burning determination' shown in your eyes, as you created that majestic pillar of water.
If 'looks could kill' then that teacup would have been decimated eons before.
And of course as Mr Chem ever so politely points out, the more than sufficient lung capacity shown here.
And now I will hide under my table again.
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According to my calculations
How do you calculate something this?
The maximum height is determined by the 'head'. You just need to estimate the height of the jet and then use that to calculate the head in terms of meters of water, the amount of head the lady supplies determines the maximum height it will spurt.
So in the picture the jet has gone less than a 0.3 m upwards; so you need a head pressure of 0.3m. One atmosphere is about 10m head (14.7 psi) so it's 0.3/10*14.7 =~ 0.5 psi.
There's also some losses due to viscosity of the liquids flow in the nozzle, I could calculate it, but the calculation is a bit messy, and that shouldn't be too bad at these low speeds.
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Yeah, I just tried it in my shower... there's now a wet patch on the ceiling and my fringe is a bit damp. [:D] The biggest problem was sealing the teapot with my mouth. The other problem I had was the angle of the spout of the teapot I was using was a bit flat to get a really good height.
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Can you resistance-train your diaphram muscles?
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The teapot is a red herring (possibly belonging to Mr Russel, but that's another story).
If you can spit a jet of water like that then there's not a lot of difference between doing so and blowing it out of the teapot.
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Can you resistance-train your diaphram muscles?
You probably can, but you've got to be careful with that kind of thing, lungs don't take high pressures very well- they can actually rupture, even some musical instrument players have been known to have problems with that kind of thing, although they don't usually die, they can get leaks of air into their chest; and blowing up water bottles is actually pretty dangerous.
FWIW I used my lungs, not just my mouth to blow, I don't think you'd get a good strong jet with just your mouth.
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*Bravely putting head above table*
Reading "lungs don't take high pressures very well"
That's probably why it's a lovely lady doing it Mr Wolfekeeper.
As we all can see, their lungs are so much more, than us mere mens.
We just can't reach those aesthetic heights of delightful proportions.
*Most astutely hiding under that same table, just before the pie lands*
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(Ah, yes) *a table is always good to hide under* [:)]