The Virtual Pub
Come Inside... => The Library => Topic started by: Barman on September 21, 2008, 12:05:59 PM
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This has bothered me for a while... so can any of you
knuckleheads brainy bonces out there help me...?
Take a container that can be made air-tight - a 2l pepsi bottle for instance.
Half fill it with cold water, screw on the cap and give it a bloody good shake
Open the top and... nothing happens. noooo:
Now...
Take the same bottle and half fill with hot water
Give it a bloody good shake (not forgetting to screw the top on tightly first)...
Unscrew the cap and "fizzzzz", pressure has built-up inside the bottle eeek:
Where does that come from then...? shrugs:
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The hot water cools as it is shaken. This causes it to contract creating a slight vacuum in the bottle. As you unscrew the cap the "Fizz" is air rushing to fill that vacuum. whistle:
NEXT!
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The hot water cools as it is shaken. This causes it to contract creating a slight vacuum in the bottle. As you unscrew the cap the "Fizz" is air rushing to fill that vacuum. whistle:
NEXT!
Nope! noooo:
The pressure is positive...
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Dunno.
Lets talk about breasts. ;D
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Dunno.
Lets talk about breasts. ;D
( o Y o ) cloud9:
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The hot water cools as it is shaken. This causes it to contract creating a slight vacuum in the bottle. As you unscrew the cap the "Fizz" is air rushing to fill that vacuum. whistle:
NEXT!
Nope! noooo:
The pressure is positive...
Sorry but you know I'm right. That is why all hot water systems have an "Expansion" tank. whistle:
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Professor Wenchy has her own thread for this stuff whistle:
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And where is she when she is needed? angry041:
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IKEA
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Prolly ::)
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The hot water cools as it is shaken. This causes it to contract creating a slight vacuum in the bottle. As you unscrew the cap the "Fizz" is air rushing to fill that vacuum. whistle:
NEXT!
Nope! noooo:
The pressure is positive...
Sorry but you know I'm right. That is why all hot water systems have an "Expansion" tank. whistle:
Yes... cos it expands when you heat it...
Have you tried the bloody experiment or not??? Banghead
John Noakes didn't have these problems on Blue Peter... noooo:
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Did it at school at least 50 years ago. Mind we used a screw top glass bottle 'cos PET bottles hadn't been invented.
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Did it at school at least 50 years ago. Mind we used a screw top glass bottle 'cos PET bottles hadn't been invented.
Ah... that's why you've forgotten that the pressure increases then... point:
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razz:
I failed Physics anyway
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razz:
I failed Physics anyway
No wonder then... noooo:
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razz:
I failed Physics anyway
No wonder then... noooo:
It doesn't make me a bad person.
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razz:
I failed Physics anyway
No wonder then... noooo:
It doesn't make me a bad person.
Nooooo.... just a bad physicist.... whistle:
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razz:
I failed Physics anyway
No wonder then... noooo:
It doesn't make me a bad person.
Nooooo.... just a bad physicist.... whistle:
(https://www.virtual-pub.com/SMF/proxy.php?request=http%3A%2F%2Fwww.kunama.com%2Fpersonal%2Fblog%2F2006%2F09images%2F20060907a-snoopy.gif&hash=cfabbb66513add1b473ca138c9cb7278db1ad4c4)
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razz:
I failed Physics anyway
No wonder then... noooo:
It doesn't make me a bad person.
Nooooo.... just a bad physicist.... whistle:
(https://www.virtual-pub.com/SMF/proxy.php?request=http%3A%2F%2Fwww.kunama.com%2Fpersonal%2Fblog%2F2006%2F09images%2F20060907a-snoopy.gif&hash=cfabbb66513add1b473ca138c9cb7278db1ad4c4)
Welcome to my world... noooo:
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(https://www.virtual-pub.com/SMF/proxy.php?request=http%3A%2F%2Fwww.salas.com%2Fweblogs%2Fimages%2FSnoopy.jpg&hash=dad25108ff242b44190bf720abb998fd17dd3f56)
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(https://www.virtual-pub.com/SMF/proxy.php?request=http%3A%2F%2Fwww.salas.com%2Fweblogs%2Fimages%2FSnoopy.jpg&hash=dad25108ff242b44190bf720abb998fd17dd3f56)
shrugs:
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(https://www.virtual-pub.com/SMF/proxy.php?request=http%3A%2F%2Fwordylefty.files.wordpress.com%2F2008%2F03%2Flucy-doctor-stand.jpg&hash=68df007d7e0fcddb34ef0091b2ffca39cc8a67ca)
Peanuts has the answer to everything
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The hot water cools as it is shaken. This causes it to contract creating a slight vacuum in the bottle. As you unscrew the cap the "Fizz" is air rushing to fill that vacuum. whistle:
NEXT!
I'm with Snoopy, it sucks.
Unless in your case, it is all the Methane given off by the part-treated sewage in Cyprus water.
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Ye cannae change the laws of physics Captain.
(https://www.virtual-pub.com/SMF/proxy.php?request=http%3A%2F%2Flightwater.files.wordpress.com%2F2007%2F07%2Fstar-treks-scotty.jpg&hash=370dd2d3bbb3f6fe454b8c31d875823863f8dc3a)
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The hot water cools as it is shaken. This causes it to contract creating a slight vacuum in the bottle. As you unscrew the cap the "Fizz" is air rushing to fill that vacuum. whistle:
NEXT!
I'm with Snoopy, it sucks.
Unless in your case, it is all the Methane given off by the part-treated sewage in Cyprus water.
It definitely blows! Banghead
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(https://www.virtual-pub.com/SMF/proxy.php?request=http%3A%2F%2Fwordylefty.files.wordpress.com%2F2008%2F03%2Flucy-doctor-stand.jpg&hash=68df007d7e0fcddb34ef0091b2ffca39cc8a67ca)
Peanuts has the answer to everything
What can I get for (https://www.virtual-pub.com/SMF/proxy.php?request=http%3A%2F%2Fwww.freesmileys.org%2Fsmileys%2Fforum%2F2c.gif&hash=12460a2428827f0f0cf9f48655bc6987a019b1df) (http://www.freesmileys.org) rubschin:
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The hot water cools as it is shaken. This causes it to contract creating a slight vacuum in the bottle. As you unscrew the cap the "Fizz" is air rushing to fill that vacuum. whistle:
NEXT!
I'm with Snoopy, it sucks.
Unless in your case, it is all the Methane given off by the part-treated sewage in Cyprus water.
It definitely blows! Banghead
Calm down dear ~ it's only an internet forum happy100
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Line from Maggie Thatcher, sitting on a field gun in the Falklands: "Will this thing blow me off?" (courtesy: Radio 4)