Absolute Zero

And we normally don't say "degrees kelvin" or use the degree symbol. We just say "kelvins" or 273K.
 
That's a completely meaningless question. How can an atom or molecule be moving slower than "not moving at all" which is what -1K implies?
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please note that I don't really know anything abouth the subject

But I wonderd if -1K would react similar like 1K so that it's spin would increase again (altough reversed) and would show share similar differences like matter Vs antimatter.
If it's not imposible in theorie Then would this particle gain energy when it's radiating it?
 
orcot said:
please note that I don't really know anything abouth the subject

But I wonderd if -1K would react similar like 1K so that it's spin would increase again (altough reversed) and would show share similar differences like matter Vs antimatter.
If it's not imposible in theorie Then would this particle gain energy when it's radiating it?
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Well, if you read the thread, you'd know that temperature is a measure of the motion on molecules and atoms. And that "absolute zero" is where all motion stops. And therefore, speculating about what -1K (negative stop-ness???) means is meaningless.
 
superluminal said:
Well, atoms are still bound to each other by valence electrons, even at absolute zero. Only the overall atomic motion is "stopped". When I say they don't move in a conventional sense, I mean they're not "orbiting" the way some think. They can't be moving in a nonuniformly accelerated way (i.e. circular orbits) because they'd radiate away their energy in a burst of photons and fall into the nucleus and there'd be nothing (electrons that are moving non uniformly radiate photons).

That's all I meant.
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Sorry to nag you... lol

But 0 K is complete lack of energy right ?
How can anything be energetic at 0 K then ? No matter how electrons move, can't keep that up at zero energy, right ?
 
0K is yust as likly to achieve like c(lightspeed), you can get pretty close but you will never get there
 
orcot said:
0K is yust as likly to achieve like c(lightspeed), you can get pretty close but you will never get there
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I know, it's the hypothetical point at which zero energy is achieved or something, right ?
 
Enmos said:
Sorry to nag you... lol

But 0 K is complete lack of energy right ?
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No. It's a complete lack of kinetic energy associated with the molecules of the cold stuff.

How can anything be energetic at 0 K then? No matter how electrons move, can't keep that up at zero energy, right ?
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Yes, they can. (just a reminder - 0K is theoretically impossible. 0.000001K is not)

The kinetic energy we're talking about is only about the movement of those atoms and molecules. The quantum behavior of the electrons in "orbit" around the atom is unrealted to the temperature of the atom as a whole. The atoms still share valence electrons so are still bound together in a normal way.

Think of it this way. You have a bunch of balls connected to each other with elastic in a Web-O-Balls[sup]TM[/sup]. The web is on a big vibrating table. As the table vibrates, the balls are flung about, stretching the elastic. As you reduce the vibrations, the balls slow down and are pulled closer together (they "cool"). When you turn the table off (absolute zero) the balls are still there, still connected, and still in a web.

Yes?
 
superluminal said:
No. It's a complete lack of kinetic energy associated with the molecules of the cold stuff.


Yes, they can. (just a reminder - 0K is theoretically impossible. 0.000001K is not)

The kinetic energy we're talking about is only about the movement of those atoms and molecules. The quantum behavior of the electrons in "orbit" around the atom is unrealted to the temperature of the atom as a whole. The atoms still share valence electrons so are still bound together in a normal way.

Think of it this way. You have a bunch of balls connected to each other with elastic in a Web-O-Balls[sup]TM[/sup]. The web is on a big vibrating table. As the table vibrates, the balls are flung about, stretching the elastic. As you reduce the vibrations, the balls slow down and are pulled closer together (they "cool"). When you turn the table off (absolute zero) the balls are still there, still connected, and still in a web.

Yes?
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Yes, thanks for the example :)
So I guess it's safe to say that electron do not possess kinetic energy then ?
 
Enmos said:
Yes, thanks for the example :)
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You're welcome!

So I guess it's safe to say that electron do not possess kinetic energy then ?
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When bound to an atom and in a ground state (not excited by outside sources), I would have to say, classically, no. I could be wrong, but I've never heard of bound electrons being described by anything other than their excitation states or potential energy.
 
superluminal said:
You're welcome!


When bound to an atom and in a ground state (not excited by outside sources), I would have to say, classically, no. I could be wrong, but I've never heard of bound electrons being described by anything other than their excitation states or potential energy.
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Thanks :)
 
Liquid helium is fine below 1.K . Molecular motion is supposed to stop at 0.K but atomic motion continues, as in matter does not collapse and so cease to exist. This suggests that a "colder" temperature may be possible where all motion does cease.
 
maxzuk said:
How does absolute zero work on PLASMA (The 4th state of matter)?
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Well, a plasma is a gas that has been heated to such temperatures that its atoms become ionized. i.e. some outer electrons become unbound and the "gas" is now electrically conducting. That's a plasma. So, as you cool the plasma, it will become a neutral gas again and then eventually a solid. So, it behaves just like anything else that you freeze. It just starts out one phase farther along than a neutral gas.
 
Liquid helium is fine below 1.K . Molecular motion is supposed to stop at 0.K
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yeah but it stil freezes at 0.95 K what is still verry cold... makes you wonder could their be a element or a molecule that doesn't become solid when it reaches 0K?
 
orcot said:
yeah but it stil freezes at 0.95 K what is still verry cold... makes you wonder could their be a element or a molecule that doesn't become solid when it reaches 0K?
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What is the definition of the word "Absolute"? And the word "Zero"?
 
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