| View previous topic :: View next topic |
| Author |
Message |
Sanny
Guest
|
 Posted: Wed Nov 12, 2008 4:47 pm Post subject: Question on Bubble. |
 |
|
When I move water in a glass/ beaker I create a few bubbles.
These bubbles go up as they are filled with air. And air being lighter
than water the Bubble goes up.
Till now I understand the Physices.
Once the Bubble reaches the surface of water I presume air in bubble
will go out But I find that Buble keep sitting over there for 20 sec
then brust.
Why do the bubble not escape the water as air being lighter than water
should get out of water immidietly?
One more thing I find is that Bubble floats on water like a boat.
Is this because of surface tension between air and water?
What stops the air inside bubble from comming out?
Is there any law on after how much time a bubble will Brust?
I heard a Bubble can stay alive for 1-2 years if not disturbed is it
true?
Bye
Sanny
Be Intelligent: http://www.GetClub.com/ |
|
| |
|
 Back to top |
Bret Cahill
Guest
|
| Posted: Wed Nov 12, 2008 4:53 pm Post subject: Re: Question on Bubble. |
|
|
[quote]Why do the bubble not escape the water as air being lighter than water
[/quote]
Maybe a soap bubble filled with He would rise.
.. . .
[quote]I heard a Bubble can stay alive for 1-2 years if not disturbed is it
true?
[/quote]
Maybe with 100% re humidity.
Bret Cahill |
|
| |
|
| Back to top |
dlzc
Guest
|
| Posted: Wed Nov 12, 2008 5:07 pm Post subject: Re: Question on Bubble. |
|
|
Dear Sanny:
On Nov 12, 9:47 am, Sanny <softta...@hotmail.com> wrote:
[quote]When I move water in a glass/ beaker I create a few
bubbles.
These bubbles go up as they are filled with air. And
air being lighter than water the Bubble goes up.
Till now I understand the Physices.
Once the Bubble reaches the surface of water I
presume air in bubble will go out But I find that
Buble keep sitting over there for 20 sec then brust.
[/quote]
Right. Same with a soap bubble in the air.
[quote]Why do the bubble not escape the water as air
being lighter than water should get out of water
immidietly?
[/quote]
Like a balloon, water has an affinity for itself. This "surface
tension" can be quite strong, especially if the bubble is small. See
what happens with: http://en.wikipedia.org/wiki/Sonoluminescence
.... and bubbles that are *really* tiny.
[quote]One more thing I find is that Bubble floats on
water like a boat.
Is this because of surface tension between air
and water?
[/quote]
The average density of air plus upper layer of water equals the
bouyant force of the water below it.
[quote]What stops the air inside bubble from comming out?
[/quote]
It will permeate through to some extent. You can see this sometimes
with balloons, but a bubble is so short lived, you can>t notice it.
[quote]Is there any law on after how much time a bubble
will Brust?
[/quote]
Several, no doubt.
[quote]I heard a Bubble can stay alive for 1-2 years if not
disturbed is it true?
[/quote]
I don>t see why not. The humidity and turbulence would have to be
very carefully controlled.
David A. Smith |
|
| |
|
| Back to top |
dlzc
Guest
|
| Posted: Wed Nov 12, 2008 5:08 pm Post subject: Re: Question on Bubble. |
|
|
Dear Bret Cahill:
On Nov 12, 9:53 am, Bret Cahill <BretCah...@aol.com> wrote:
[quote]Why do the bubble not escape the water as air being lighter than water
Maybe a soap bubble filled with He would rise.
[/quote]
Mythbusters did this with soap and methane gas. They do float in air.
David A. Smith |
|
| |
|
| Back to top |
RustyJames
Guest
|
| Posted: Wed Nov 12, 2008 5:11 pm Post subject: Re: Question on Bubble. |
|
|
On Nov 12, 10:07 am, dlzc <dl...@cox.net> wrote:
[quote]Dear Sanny:
On Nov 12, 9:47 am, Sanny <softta...@hotmail.com> wrote:
When I move water in a glass/ beaker I create a few
bubbles.
These bubbles go up as they are filled with air. And
air being lighter than water the Bubble goes up.
Till now I understand the Physices.
Once the Bubble reaches the surface of water I
presume air in bubble will go out But I find that
Buble keep sitting over there for 20 sec then brust.
Right. Same with a soap bubble in the air.
Why do the bubble not escape the water as air
being lighter than water should get out of water
immidietly?
Like a balloon, water has an affinity for itself. This "surface
tension" can be quite strong, especially if the bubble is small. See
what happens with:http://en.wikipedia.org/wiki/Sonoluminescence
... and bubbles that are *really* tiny.
One more thing I find is that Bubble floats on
water like a boat.
Is this because of surface tension between air
and water?
The average density of air plus upper layer of water equals the
bouyant force of the water below it.
What stops the air inside bubble from comming out?
It will permeate through to some extent. You can see this sometimes
with balloons, but a bubble is so short lived, you can>t notice it.
Is there any law on after how much time a bubble
will Brust?
Several, no doubt.
I heard a Bubble can stay alive for 1-2 years if not
disturbed is it true?
I don>t see why not. The humidity and turbulence would have to be
very carefully controlled.
David A. Smith
[/quote]
becuase of surface tention of the molecular bond of water or H2o
requirs time before the pressure is aclamated enough for the oxigen to
break through the molecular bond of the H2O |
|
| |
|
| Back to top |
dlzc
Guest
|
| Posted: Wed Nov 12, 2008 5:38 pm Post subject: Re: Question on Bubble. |
|
|
Dear RustyJames:
On Nov 12, 10:11 am, RustyJames <extremesoundandli...@yahoo.com>
wrote:
....
[quote]becuase of surface tention of the molecular
bond of water or H2o requirs time before the
pressure is aclamated enough for the oxigen to
break through the molecular bond of the H2O
[/quote]
What causes this "time delay"? That is what Sanny was asking.
With time, the water flows back down to the free surface, leaving a
thinner and thinner "mesh" of water molecules, some of which also
evaporate to the air. Finally, a gas atom outside or inside is moving
fast enough to displace a key water molecule, and the mesh collapses.
http://high_speed_video.colostate.edu/Fluid%20Mechanics/soap_bubble_pop.wmv
.... this looks a lot like a balloon popping, and I suspect a water-
only bubble will look the same.
http://video.stumbleupon.com/#p=k6pnvlasph
.... even this corn kernel popping has similarities...
David A. Smith |
|
| |
|
| Back to top |
tadchem
Guest
|
| Posted: Wed Nov 12, 2008 11:57 pm Post subject: Re: Question on Bubble. |
|
|
On Nov 12, 11:47 am, Sanny <softta...@hotmail.com> wrote:
[quote]When I move water in a glass/ beaker I create a few bubbles.
These bubbles go up as they are filled with air. And air being lighter
than water the Bubble goes up.
Till now I understand the Physices.
Once the Bubble reaches the surface of water I presume air in bubble
will go out But I find that Buble keep sitting over there for 20 sec
then brust.
[/quote]
The bubble should be considered as a unit: a fixed mass of air wrapped
in a flexible container made mostly of water. The water in the walls
of the container make the bobble overall a little denser than air, so
it won>t flat well in air. Make your bubbles with a lighter-than air
gas such as helium or hydrogen and watch what they do.
[quote]Why do the bubble not escape the water as air being lighter than water
should get out of water immidietly?
[/quote]
How do you suppose the air inside the bubble can get through the wall
of the bubble *without* breaking the bubble?
[quote]One more thing I find is that Bubble floats on water like a boat.
Is this because of surface tension between air and water?
[/quote]
Archimedes' Principle is the law behind things floating in fluid
media.
[quote]What stops the air inside bubble from comming out?
[/quote]
The physical barrier of the materiel of the bubble.
[quote]Is there any law on after how much time a bubble will Brust?
[/quote]
I don>t think even Congress will bother with that one.
[quote]I heard a Bubble can stay alive for 1-2 years if not disturbed is it
true?
[/quote]
http://homepage.mac.com/keithmjohnson/soapbubbler.com/page65/page65.html
"The Guinness Book of Records entry for bubble longevity belongs,
appropriately enough, to Eiffel Plasterer, who managed to keep a
bubble as a pet for just one day short of a full year. "
[quote]Bye
Sanny
[/quote]
Tom Davidson
Richmond, VA |
|
| |
|
| Back to top |
Igor
Guest
|
| Posted: Thu Nov 13, 2008 12:13 am Post subject: Re: Question on Bubble. |
|
|
On Nov 12, 11:47 am, Sanny <softta...@hotmail.com> wrote:
[quote]When I move water in a glass/ beaker I create a few bubbles.
These bubbles go up as they are filled with air. And air being lighter
than water the Bubble goes up.
[/quote]
No, the bubbles experience a bouyant force upward equal to the weight
of the water they displace. If this force is greater than their own
weight, they will rise. If not, they could still sink or remain
stationary.
[quote]Till now I understand the Physices.
[/quote]
Doesn>t sound like it.
[quote]Once the Bubble reaches the surface of water I presume air in bubble
will go out But I find that Buble keep sitting over there for 20 sec
then brust.
Why do the bubble not escape the water as air being lighter than water
should get out of water immidietly?
[/quote]
It>s a combination of external air pressure and surface tension on the
bubble.
[quote]One more thing I find is that Bubble floats on water like a boat.
Is this because of surface tension between air and water?
[/quote]
Basically.
[quote]What stops the air inside bubble from comming out?
[/quote]
An interface of liquid water separates the air inside from the air
outside. That>s why it>s called a bubble.
[quote]Is there any law on after how much time a bubble will Brust?
[/quote]
None that I>m aware of. It>s mostly a probabilistic thing.
[quote]I heard a Bubble can stay alive for 1-2 years if not disturbed is it
true?
[/quote]
Maybe, but you would have to maintain its surface tension. Not an
easy thing to do. |
|
| |
|
| Back to top |
tadchem
Guest
|
| Posted: Thu Nov 13, 2008 1:19 am Post subject: Re: Question on Bubble. |
|
|
On Nov 12, 8:15 pm, "Androcles" <Headmas...@Hogwarts.physics> wrote:
[quote]"tadchem" <tadc...@comcast.net> wrote in message
news:0607959b-ea77-49cf-8e3a-91ab249ed82a@c1g2000yqg.googlegroups.com...
On Nov 12, 11:47 am, Sanny <softta...@hotmail.com> wrote:
When I move water in a glass/ beaker I create a few bubbles.
These bubbles go up as they are filled with air. And air being lighter
than water the Bubble goes up.
Till now I understand the Physices.
Once the Bubble reaches the surface of water I presume air in bubble
will go out But I find that Buble keep sitting over there for 20 sec
then brust.
The bubble should be considered as a unit: a fixed mass of air wrapped
in a flexible container made mostly of water. The water in the walls
of the container make the bobble overall a little denser than air, so
it won>t flat well in air. Make your bubbles with a lighter-than air
gas such as helium or hydrogen and watch what they do.
Why do the bubble not escape the water as air being lighter than water
should get out of water immidietly?
How do you suppose the air inside the bubble can get through the wall
of the bubble *without* breaking the bubble?
One more thing I find is that Bubble floats on water like a boat.
Is this because of surface tension between air and water?
Archimedes' Principle is the law behind things floating in fluid
media.
What stops the air inside bubble from comming out?
The physical barrier of the materiel of the bubble.
Is there any law on after how much time a bubble will Brust?
I don>t think even Congress will bother with that one.
I heard a Bubble can stay alive for 1-2 years if not disturbed is it
true?
http://homepage.mac.com/keithmjohnson/soapbubbler.com/page65/page65.html
"The Guinness Book of Records entry for bubble longevity belongs,
appropriately enough, to Eiffel Plasterer, who managed to keep a
bubble as a pet for just one day short of a full year. "
------------------------------------------------------------------
Oh dear, that>s brust my bobble. Now I>m doscombobelated.
[/quote]
"Virginity is like a bubble; one prick and its gone forever."
Tom Davidson
Richmond, VA |
|
| |
|
| Back to top |
Uncle Al
Guest
|
| Posted: Thu Nov 13, 2008 2:39 am Post subject: Re: Question on Bubble. |
|
|
Sanny wrote:
[quote]
When I move water in a glass/ beaker I create a few bubbles.
[snip crap][/quote]
Do it in vacuum.
[quote]Why do the bubble not escape the water as air being lighter than water
should get out of water immidietly?
[snip rest of crap][/quote]
Imagine being weightless and having the water shoot away from the
bubble in the opposite direction. Ignorance is not a form of knowing
things.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2 |
|
| |
|
| Back to top |
Timberwoof
Guest
|
| Posted: Thu Nov 13, 2008 4:19 am Post subject: Re: Question on Bubble. |
|
|
In article
<25780045-a172-4cfe-9187-65af23f4af14@w1g2000prk.googlegroups.com>,
Sanny <softtanks@hotmail.com> wrote:
[quote]When I move water in a glass/ beaker I create a few bubbles.
These bubbles go up as they are filled with air. And air being lighter
than water the Bubble goes up.
Till now I understand the Physices.
Once the Bubble reaches the surface of water I presume air in bubble
will go out But I find that Buble keep sitting over there for 20 sec
then brust.
Why do the bubble not escape the water as air being lighter than water
should get out of water immidietly?
One more thing I find is that Bubble floats on water like a boat.
Is this because of surface tension between air and water?
[/quote]
yes.
[quote]What stops the air inside bubble from comming out?
[/quote]
surface tension.
[quote]Is there any law on after how much time a bubble will Brust?
[/quote]
no.
[quote]I heard a Bubble can stay alive for 1-2 years if not disturbed is it
true?
[/quote]
Maybe.
--
Timberwoof <me at timberwoof dot com> http://www.timberwoof.com
People who can>t spell get kicked out of Hogwarts. |
|
| |
|
| Back to top |
G=EMC^2 Glazier
Guest
|
| Posted: Thu Nov 13, 2008 7:09 am Post subject: Re: Question on Bubble. |
|
|
To ya All Bubble coming up out of pure water picks up the water surface
tension and can use this surface tension to sit on water surface. If
coming up out of Bud light it has a stronger surface tension and lasts
longer. Beer also adds many times to the number of bubbles. Like a kid
I like to make bubbles last as long as possible,and know how to increase
the bonding power of molecules that make them last as long as possible
As a kid in the first grade I still remember this song If you ever have
a trouble it will bounce like a bubble if you only go Ha Ha Ha.(great
depression song) Just blew the bubbles of my beer mug. I love bubbles.
Had an 8 year old girl friend they called bubbles. Bubbles could tell me
a lot when I use to scuba dive. Putting air bubbles in water makes it
taste better. Fish need air bubbles in water to breath,and since
humankind came out of water than I can theorize If not for bubbles there
would be no humans. go figure TreBert |
|
| |
|
| Back to top |
Androcles
Guest
|
| Posted: Thu Nov 13, 2008 7:15 am Post subject: Re: Question on Bubble. |
|
|
"tadchem" <tadchem@comcast.net> wrote in message
news:0607959b-ea77-49cf-8e3a-91ab249ed82a@c1g2000yqg.googlegroups.com...
On Nov 12, 11:47 am, Sanny <softta...@hotmail.com> wrote:
[quote]When I move water in a glass/ beaker I create a few bubbles.
These bubbles go up as they are filled with air. And air being lighter
than water the Bubble goes up.
Till now I understand the Physices.
Once the Bubble reaches the surface of water I presume air in bubble
will go out But I find that Buble keep sitting over there for 20 sec
then brust.
[/quote]
The bubble should be considered as a unit: a fixed mass of air wrapped
in a flexible container made mostly of water. The water in the walls
of the container make the bobble overall a little denser than air, so
it won>t flat well in air. Make your bubbles with a lighter-than air
gas such as helium or hydrogen and watch what they do.
[quote]Why do the bubble not escape the water as air being lighter than water
should get out of water immidietly?
[/quote]
How do you suppose the air inside the bubble can get through the wall
of the bubble *without* breaking the bubble?
[quote]One more thing I find is that Bubble floats on water like a boat.
Is this because of surface tension between air and water?
[/quote]
Archimedes' Principle is the law behind things floating in fluid
media.
[quote]What stops the air inside bubble from comming out?
[/quote]
The physical barrier of the materiel of the bubble.
[quote]Is there any law on after how much time a bubble will Brust?
[/quote]
I don>t think even Congress will bother with that one.
[quote]I heard a Bubble can stay alive for 1-2 years if not disturbed is it
true?
[/quote]
http://homepage.mac.com/keithmjohnson/soapbubbler.com/page65/page65.html
"The Guinness Book of Records entry for bubble longevity belongs,
appropriately enough, to Eiffel Plasterer, who managed to keep a
bubble as a pet for just one day short of a full year. "
------------------------------------------------------------------
Oh dear, that>s brust my bobble. Now I>m doscombobelated. |
|
| |
|
| Back to top |
Androcles
Guest
|
| Posted: Thu Nov 13, 2008 7:27 am Post subject: Re: Question on Bubble. |
|
|
"tadchem" <tadchem@comcast.net> wrote in message
news:491f2889-bbb9-4f9b-9142-f9272e531b69@f13g2000yqj.googlegroups.com...
On Nov 12, 8:15 pm, "Androcles" <Headmas...@Hogwarts.physics> wrote:
[quote]"tadchem" <tadc...@comcast.net> wrote in message
news:0607959b-ea77-49cf-8e3a-91ab249ed82a@c1g2000yqg.googlegroups.com...
On Nov 12, 11:47 am, Sanny <softta...@hotmail.com> wrote:
When I move water in a glass/ beaker I create a few bubbles.
These bubbles go up as they are filled with air. And air being lighter
than water the Bubble goes up.
Till now I understand the Physices.
Once the Bubble reaches the surface of water I presume air in bubble
will go out But I find that Buble keep sitting over there for 20 sec
then brust.
The bubble should be considered as a unit: a fixed mass of air wrapped
in a flexible container made mostly of water. The water in the walls
of the container make the bobble overall a little denser than air, so
it won>t flat well in air. Make your bubbles with a lighter-than air
gas such as helium or hydrogen and watch what they do.
Why do the bubble not escape the water as air being lighter than water
should get out of water immidietly?
How do you suppose the air inside the bubble can get through the wall
of the bubble *without* breaking the bubble?
One more thing I find is that Bubble floats on water like a boat.
Is this because of surface tension between air and water?
Archimedes' Principle is the law behind things floating in fluid
media.
What stops the air inside bubble from comming out?
The physical barrier of the materiel of the bubble.
Is there any law on after how much time a bubble will Brust?
I don>t think even Congress will bother with that one.
I heard a Bubble can stay alive for 1-2 years if not disturbed is it
true?
http://homepage.mac.com/keithmjohnson/soapbubbler.com/page65/page65.html
"The Guinness Book of Records entry for bubble longevity belongs,
appropriately enough, to Eiffel Plasterer, who managed to keep a
bubble as a pet for just one day short of a full year. "
------------------------------------------------------------------
Oh dear, that>s brust my bobble. Now I>m doscombobelated.
[/quote]
"Virginity is like a bubble; one prick and its gone forever."
Tom Davidson
Richmond, VA
Dang... I was born with one. I never stood a chance. |
|
| |
|
| Back to top |
John J
Guest
|
| Posted: Thu Nov 13, 2008 7:56 am Post subject: Re: Question on Bubble. |
|
|
(confused attributes - sorry)
[quote]The bubble should be considered as a unit: a fixed mass of air wrapped
in a flexible container made mostly of water. The water in the walls
of the container make the bobble overall a little denser than air, so
it won>t flat well in air. Make your bubbles with a lighter-than air
gas such as helium or hydrogen and watch what they do.
[/quote]
Way too much trouble! Just get one of those silo Guinnesses (canned
Guinness). They have a nitrogen thing in the bottom. Awesome to watch
the head poof into being and go away fast. Not fast enough if yer really
thirsty. (Irish have it right - flat out warm is good) |
|
| |
|
| Back to top |
|
