What Happens at Absolute Zero and Can We Go Beyond It?

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Discussion Overview

The discussion centers around the concept of absolute zero, exploring whether it can be surpassed, the behavior of atoms at this temperature, and inquiries into the highest temperature known. It encompasses theoretical and conceptual aspects of thermodynamics and quantum mechanics.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants assert that it is impossible to go below absolute zero and that absolute zero itself cannot be reached, only approached.
  • One participant defines absolute zero as the complete cessation of motion in a gas, suggesting that no state can be "stiller" than this.
  • Another participant introduces the concept of negative temperatures, indicating that there are conditions under which this phenomenon can occur.
  • There is a discussion regarding the nature of atomic motion at absolute zero, with one participant referencing the Heisenberg uncertainty principle to argue that atoms do not completely stop moving due to 'zero point energy'.
  • Participants speculate on the highest temperatures that might be observed or theorized, mentioning events like supernovae, electron-positron annihilation, and collisions of black holes as potential sources.

Areas of Agreement / Disagreement

Participants express differing views on the nature of absolute zero and the possibility of negative temperatures, indicating that multiple competing views remain. The discussion on the highest temperature also reflects uncertainty and speculation without consensus.

Contextual Notes

Limitations include the dependence on definitions of temperature and the unresolved implications of quantum mechanics on atomic behavior at absolute zero.

bozo the clown
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Can we go beyond absolute zero what happens at absolute zero do atoms behave any different insights please

Also what is the hottest temparature known
?
 
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bozo the clown said:
Can we go beyond absolute zero what happens at absolute zero do atoms behave any different insights please

Also what is the hottest temparature known?

You can't go below absolute zero. You can't even reach absolute zero, but you can get close.

Absolute zero is defined as the complete cessation of motion in a gas. You can't get any stiller than not moving.

I don't think there is an upper limit to temperature. What might cause the highest temperature observed, or conjectured? A supernova detonation? Probably not? Electron-positron anniahilation? Matter falling onto the surface of a neutron star? The colission of two black holes?
 
The motion of the atoms doesn't stop completely at absolute zero. If you knew the velocity of an atom was exactly zero, what would you be able to say about its position? (Heisenberg uncertainty principle)

What actually happens is that once a particle has lost all the thermal energy it can, it is left with 'zero point energy'. All motion does not cease.
 

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