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post #1 of 24 Old 01-29-2004, 7:48 AM Thread Starter
 
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6th form of matter...

Holy sublimation Batman...


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post #2 of 24 Old 01-29-2004, 8:59 AM
 
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Re: 6th form of matter...

I use that stuff for keeping the Molsons at just the right temperature without losing any valuable heat particulates . . .

and your girlfriend too.
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post #3 of 24 Old 01-29-2004, 9:07 AM
 
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Re: 6th form of matter...

How the hell do you cool something to almost absolute zero?
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post #4 of 24 Old 01-29-2004, 9:16 AM
 
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Re: 6th form of matter...

Quote:
Originally Posted by slowpoke
How the hell do you cool something to almost absolute zero?
The AC unit off the new R1
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post #5 of 24 Old 01-29-2004, 9:17 AM
 
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Re: 6th form of matter...

Quote:
Originally Posted by ND4SPD
The AC unit off the new R1
Shouda' known! It comes with a microwave too, right?
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post #6 of 24 Old 01-29-2004, 9:20 AM
 
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Re: 6th form of matter...

Quote:
Quote:
Originally Posted by ND4SPD
The AC unit off the new R1

Shouda' known! It comes with a microwave too, right?
I heard it comes with a beer tap
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post #7 of 24 Old 01-29-2004, 9:22 AM
 
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Re: 6th form of matter...

I'm gonna get it for the expresso machine.
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post #8 of 24 Old 01-29-2004, 9:25 AM
 
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Re: 6th form of matter...

Quote:
Originally Posted by slowpoke
Shouda' known! It comes with a microwave too, right?
Nucular powered
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post #9 of 24 Old 01-29-2004, 10:34 AM
 
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Re: 6th form of matter...

Quote:
Bose-Einstein condensate,
So THAT's what wrecked my speakers. I'd blamed my son for all that Heavy Metal he kept playing .
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post #10 of 24 Old 01-29-2004, 10:42 AM
 
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Re: 6th form of matter...

Quote:
Originally Posted by slowpoke
How the hell do you cool something to almost absolute zero?
"They cooled potassium gas to a billionth of a degree C above absolute zero or minus 459 degrees F -- which is the point at which matter stops moving.

They confined the gas in a vacuum chamber and used magnetic fields and laser light to manipulate the potassium atoms into pairing up. "

Actually not too far from how they make superheated gases into a plasma for fusion (how the sun works too), the key to both being magnetic fields to accelerate or decelerate the particles.




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post #11 of 24 Old 01-29-2004, 11:17 AM
 
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Re: 6th form of matter...

Quote:
Originally Posted by luvtolean
"They cooled potassium gas to a billionth of a degree C above absolute zero or minus 459 degrees F -- which is the point at which matter stops moving.

They confined the gas in a vacuum chamber and used magnetic fields and laser light to manipulate the potassium atoms into pairing up. "

Actually not too far from how they make superheated gases into a plasma for fusion (how the sun works too), the key to both being magnetic fields to accelerate or decelerate the particles.
Thanks EinStegen.

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post #12 of 24 Old 01-29-2004, 11:26 AM
 
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Re: 6th form of matter...



Sorry...studied this stuff a bit in college and still think it's fascinating...makes me a bit enthusiastic.




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post #13 of 24 Old 01-29-2004, 12:23 PM
 
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Re: 6th form of matter...

very interesting.
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post #14 of 24 Old 01-29-2004, 1:43 PM
 
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Re: 6th form of matter...

Quote:
Originally Posted by luvtolean
... the key to both being magnetic fields to accelerate or decelerate the particles.
You are right that it is like the plasma problem. They use them to create a 'bottle' so they can block out thermal noise.

They also use them to polarize the potassiums so they lasers can get at them. The electron's orbital decay has selection rules (can't drop to a lower state by changing more than one unit of total angular momentum at a time, for example, I think that they are called Born's Rules after Max Born, ah well, they are named after someone).

At these temperatures, some of the inner electrons have dropped into mesostable states. That is, they can't drop any lower (stuck in 2p, maybe, to borrow the chemists nomenclature) from where they are, so they use the laser to stimulate them precisely into states that they can decay from to a net lower state. If you've heard of sonic cooling, it's the same principle. Kind of ironic that adding energy eventually results in a net energy loss.

I'll spare you a technical definition of temperature (because I am not sure that I can do it) and just say that as the temperature drops the quantum effects become more pronounced and that can be exploited to drop the temp even lower. When they talk about a billionth of a degree, they are likely down to trying to get ONE proton, neutron, or electron, in a system of 30-40 particles spinning the other way.
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post #15 of 24 Old 01-29-2004, 8:46 PM
 
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Re: 6th form of matter...

Quote:
Originally Posted by ND4SPD
Nucular powered
nuclear...NUCLEAR!!!

Bikes and women - both have nice curves.
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