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fufko@sbcglobal.net
science forum beginner
Joined: 03 Apr 2006
Posts: 9
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 Posted: Sun Jun 18, 2006 2:37 am Post subject:
Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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Liquid nitrogen added into a swimming pool. Visually proving beyond a
doubt that chemistry is the coolest science ever.
http://www.jumpingpixels.com/chemistry.html |
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donald j haarmann
science forum addict
Joined: 24 Mar 2005
Posts: 58
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| Posted: Sun Jun 18, 2006 3:27 am Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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"Hans" <fufko@sbcglobal.net
| Liquid nitrogen added into a swimming pool. Visually proving beyond a
| doubt that chemistry is the coolest science ever.
| http://www.jumpingpixels.com/chemistry.html
|
-----------
To paraphrase Pierre Bosquet - Magnificent! - but is isn't chemistry.
And ..... whomever jumped in the pool was but a step away from a Darwin Award.
--
donald j haarmann
-------------------------------
The ultimate result of shielding
men from the results of their follies
is to fill the world with fools.
Herbert Spencer |
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N:dlzc D:aol T:com (dlzc)
science forum Guru
Joined: 25 Mar 2005
Posts: 2835
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| Posted: Sun Jun 18, 2006 4:45 am Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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Dear donald haarmann:
"donald haarmann" <donald-haarmann@worldnet.att.net> wrote in
message
news:wK3lg.36235$mF2.28566@bgtnsc04-news.ops.worldnet.att.net...
| Quote: | "Hans" <fufko@sbcglobal.net
| Liquid nitrogen added into a swimming pool. Visually
| proving beyond a doubt that chemistry is the coolest
| science ever.
| http://www.jumpingpixels.com/chemistry.html
-----------
To paraphrase Pierre Bosquet - Magnificent! - but is
isn't chemistry.
And ..... whomever jumped in the pool was but a step
away from a Darwin Award.
|
Been a little closer to an award if it had been "dry ice", since
the CO2 would have stayed near the surface...
David A. Smith |
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Herman Family
science forum Guru Wannabe
Joined: 14 Jun 2005
Posts: 173
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| Posted: Sun Jun 18, 2006 5:53 am Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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"N:dlzc D:aol T:com (dlzc)" <N: dlzc1 D:cox T:net@nospam.com> wrote in
message news:FT4lg.3$6w.1@fed1read11...
| Quote: | Dear donald haarmann:
"donald haarmann" <donald-haarmann@worldnet.att.net> wrote in message
news:wK3lg.36235$mF2.28566@bgtnsc04-news.ops.worldnet.att.net...
"Hans" <fufko@sbcglobal.net
| Liquid nitrogen added into a swimming pool. Visually
| proving beyond a doubt that chemistry is the coolest
| science ever.
| http://www.jumpingpixels.com/chemistry.html
-----------
To paraphrase Pierre Bosquet - Magnificent! - but is
isn't chemistry.
And ..... whomever jumped in the pool was but a step
away from a Darwin Award.
Been a little closer to an award if it had been "dry ice", since the CO2
would have stayed near the surface...
David A. Smith
If the N2 had spilled backwards for some reason (tripping), then the guy |
holding it would have been eligible for the Darwin Awards also. He would
also bring a new meaning to "stiffie".
Michael |
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Repeating Rifle
science forum Guru Wannabe
Joined: 25 Mar 2005
Posts: 205
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| Posted: Sun Jun 18, 2006 4:20 pm Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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On 6/17/06 7:37 PM, in article
1150598253.266417.117830@i40g2000cwc.googlegroups.com, "Hans"
<fufko@sbcglobal.net> wrote:
| Quote: | Liquid nitrogen added into a swimming pool. Visually proving beyond a
doubt that chemistry is the coolest science ever.
http://www.jumpingpixels.com/chemistry.html
It was of some interest but what chemistry is demonstrated? Name one |
chemical reaction that was illuminated?
Bill
-- Ferme le Bush |
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Herman Family
science forum Guru Wannabe
Joined: 14 Jun 2005
Posts: 173
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| Posted: Sun Jun 18, 2006 6:01 pm Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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"Salmon Egg" <salmonegg@sbcglobal.net> wrote in message
news:C0BACB6F.2DBAC%salmonegg@sbcglobal.net...
Lighten up a tad, and think like a high school student for a bit. It was
fun, interesting, and given half a chance I'd do the almost the same thing.
It kept everyone amused, and got a few of them thinking a little bit. I
have an issue with how it was transported, but that's just the safety side
of me speaking.
It was a physical reaction only, and technically speaking, it really didn't
add all that much to the world of science. Fluid dynamicists amoung us
might be interested in the flow pattens of the "fog" (probably more like a
smoke actually), relate it to cloud formation and energy transport in the
atmosphere, and some thermo type might be interested in the rate of liquid
to liquid heat transfer, and what that kid felt when he put his feet down.
Disaster planners might seriously consider using something like this to
explain the effects of an lng spill on a bay (yes, I know the differences).
It also looks like a pretty good way to generate an indicator of minute air
flows.
The rest of the world got to see something which they don't often see, got
their oohs and ahhs in, and realized that science can be really cool. I'd
guess it made a pretty good cap for the evening.
Come to think of it. I'm in this field because I think it's really cool.
On a scale of 1 to 10. I think that would be a fun party thing to do, with
the right precautions. I'll bet if I did it for some junior high and high
school students that we'd get more folks interested in science and the world
around.
Anyone got a little LN2 around and a pool. I'll bet it gets the party
rolling quite nicely.
Michael |
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<lucasea@sbcglobal.net
science forum addict
Joined: 25 Mar 2006
Posts: 94
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| Posted: Tue Jun 20, 2006 3:13 am Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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"Salmon Egg" <salmonegg@sbcglobal.net> wrote in message
news:C0BACB6F.2DBAC%salmonegg@sbcglobal.net...
N2 (l) --> N2 (g)
H2O (l) --> H2O (s) (briefly) --> H2O (s)
As a synthetic chemist, I find these particular reactions intensely boring,
but the fact is that there are chemists that are very interested in such
changes of state.
Eric Lucas |
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Repeating Rifle
science forum Guru Wannabe
Joined: 25 Mar 2005
Posts: 205
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| Posted: Tue Jun 20, 2006 4:44 am Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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On 6/19/06 8:13 PM, in article
rJJlg.150813$F_3.27390@newssvr29.news.prodigy.net, "lucasea@sbcglobal.net"
<lucasea@sbcglobal.net> wrote:
| Quote: | N2 (l) --> N2 (g)
H2O (l) --> H2O (s) (briefly) --> H2O (s)
As a synthetic chemist, I find these particular reactions intensely boring,
but the fact is that there are chemists that are very interested in such
changes of state.
|
These are what I would call physical interactions. Except for van der Waals
forces, there is little interest for chemical purists. If you want to say
the chemistry is a branch of low energy physics, I would not quarrel with
that. But I once was chastised here for that outlook. The physical
principles demonstrated in the swimming pool are even lower energy physics
than even conventional chemistry but not as low energy as that of
superconductivity.
Bill
-- Ferme le Bush |
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///Owen\\\\\\3
science forum beginner
Joined: 15 May 2006
Posts: 9
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| Posted: Tue Jun 20, 2006 5:47 pm Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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Hans wrote:
Here's neat video...... No big science principles, but a lot of fun
http://eepybird.com/dcm1.html |
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donald j haarmann
science forum addict
Joined: 24 Mar 2005
Posts: 58
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| Posted: Tue Jun 20, 2006 9:11 pm Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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"Salmon Egg" <salmonegg@sbcglobal.net|
| These are what I would call physical interactions. Except for van der Waals
| forces, there is little interest for chemical purists. If you want to say
| the chemistry is a branch of low energy physics, I would not quarrel with
| that. But I once was chastised here for that outlook. The physical
| principles demonstrated in the swimming pool are even lower energy physics
| than even conventional chemistry but not as low energy as that of
| superconductivity.
|
| Bill
| -- Ferme le Bush
---------
This is 'bout chemical as boiling water!
When I discharge a CO2 fire extinguisher am I doing chemistry?! Can I now join the
union? ACS?
donald j haarmann
------------------------
All sciences start with "stamp-collecting" - the patient accumulation
of multicoloured facts which are then stuck into an album until a pattern
emerges. This pattern is known as theory, and is used to predict other
patterns of facts, which may or may not turn out to be correct. Those
new patterns which do emerge are then used to create yet more
theory. And so the subject progresses.
A secret fear of many scientists, though, is that having started with
stamp-collecting, their subject will also end with it - that facts will
accumulate endlessly with out any new theory becoming apparent. And it
is a fear of chemists, in particular, that this has already happened - to
chemistry, Having explained in enormous detail over the last two
centuries which chemical elements exist and how they react together
to form molecules, all that has seemed to be left to chemists is to
make more and more of those molecules without advancing the
subjects theory.
The Economists 30 XI 96 |
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<lucasea@sbcglobal.net
science forum addict
Joined: 25 Mar 2006
Posts: 94
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| Posted: Wed Jun 21, 2006 12:45 am Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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"Salmon Egg" <salmonegg@sbcglobal.net> wrote in message
news:C0BCCB58.2E163%salmonegg@sbcglobal.net...
| Quote: | On 6/19/06 8:13 PM, in article
rJJlg.150813$F_3.27390@newssvr29.news.prodigy.net, "lucasea@sbcglobal.net"
lucasea@sbcglobal.net> wrote:
N2 (l) --> N2 (g)
H2O (l) --> H2O (s) (briefly) --> H2O (s)
As a synthetic chemist, I find these particular reactions intensely
boring,
but the fact is that there are chemists that are very interested in such
changes of state.
These are what I would call physical interactions. Except for van der
Waals
forces, there is little interest for chemical purists.
|
Are you saying physical chemists are not chemists?
Eric Lucas |
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<lucasea@sbcglobal.net
science forum addict
Joined: 25 Mar 2006
Posts: 94
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| Posted: Wed Jun 21, 2006 12:51 am Post subject:
Re: Liquid Nitrogen in a Swimming Pool - - - Experiment (2006)
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"donald haarmann" <donald-haarmann@worldnet.att.net> wrote in message
news:SvZlg.44657$mF2.35962@bgtnsc04-news.ops.worldnet.att.net...
| Quote: | "Salmon Egg" <salmonegg@sbcglobal.net|
| These are what I would call physical interactions. Except for van der
Waals
| forces, there is little interest for chemical purists. If you want to
say
| the chemistry is a branch of low energy physics, I would not quarrel
with
| that. But I once was chastised here for that outlook. The physical
| principles demonstrated in the swimming pool are even lower energy
physics
| than even conventional chemistry but not as low energy as that of
| superconductivity.
|
| Bill
| -- Ferme le Bush
---------
This is 'bout chemical as boiling water!
When I discharge a CO2 fire extinguisher am I doing chemistry?! Can I now
join the
union? ACS?
|
No more so than someone who lights their gas stove. However, nobody would
deny that chemistry is occuring there.
My point is that, phase changes are chemistry, intensely interesting to
certain chemists. Just because no bonds are broken or formed (and that is
highly arguable in freezing and boiling of water--H-bonds!) doesn't mean
that it is not chemistry. And just because the boiling of liquid nitrogen
is a very simple and well-understood phase change doesn't make it any
different than other phase changes that are at the cutting edge of chemistry
research. After all, the burning of methane is a very simple and
well-understood example of a reaction that I'm sure you would have no
trouble calling "chemistry" despite its elementary nature.
Eric Lucas |
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