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Comments
abcxyztpgv2 t1_j87xf0h wrote
https://en.m.wikipedia.org/wiki/Absolute_zero
Snippet to answer your curiosity:
It is commonly thought of as the lowest temperature possible, but it is not the lowest enthalpy state possible, because all real substances begin to depart from the ideal gas when cooled as they approach the change of state to liquid, and then to solid; and the sum of the enthalpy of vaporization (gas to liquid) and enthalpy of fusion (liquid to solid) exceeds the ideal gas's change in enthalpy to absolute zero. In the quantum-mechanical description, matter (solid) at absolute zero is in its ground state, the point of lowest internal energy.
https://www.nature.com/articles/nature.2013.12146
Quantum gas goes below absolute zero
Cur-De-Carmine t1_j87wqgb wrote
Temperature is a measure of particle movement. All movement stops at absolute zero, which is 0° Kelvin, or -273° Celsius, IIRC. What you're suggesting is literally impossible.
Tdshimo t1_j87x5sm wrote
A good way to think about temperature in this context is that it is a measurement of how quickly atoms or particles are vibrating. When atoms/particles stop vibrating, they reach the lowest temperature it can possibly reach… at which point, our scales for measuring temperature stop, and nothing exists below it. This is at 0 Kelvin, –273.15°C, or –459.67°F. These represent the floor for temperature, so temperature cannot reach -10,000° because it’s physically not a thing.
freeniechan t1_j87z11v wrote
Ya but what would have to happen for it to become a thing
Hoverkat t1_j8800nz wrote
For it to become a thing we would have to redefine our temperature scale to have more numbers below zero.
Tdshimo t1_j880ajm wrote
What would have to happen? Advances in quantum physics that cause us to adjust our temperature scales. Quantum states do allow for temperatures below the floors for K/C/F scales. But quantum conditions don’t extend to the majority of matter that we observe as our physical universe.
So it’s possible to go lower than the floors of our temp scales very specific, extreme, and limited circumstances* that don’t apply to the whole of our physical universe; therefore, from a practical perspective, they don’t matter when measuring temperature of the physical systems we know.
*As far as we’re now aware, and can measure. This may change as we learn more.
ShyElf t1_j87y1l0 wrote
Negative temperatures show up in systems with limited numbers of states, which rules out things with normal translational or vibrational freedom. Sometimes it happens with spin states in a magnetic field. Negative temperatures are hotter than infinite temperature, with states with more energy being more likely, where at infinite temperature all states would be equally likely. If it had unlimited energy states, it would have infinite energy, which is impossible.
Zero absolute temperature means it's in the lowest energy state, so you can't get colder. It appears in the thermodynamics as the change of the number of states with energy going as 1/T, so you can't smoothly go below zero. Lower temperatures allow more large-scale coherence, such as superfluidty and superconductivity, so at many orders of magnitude lower temperature than previously observed, it's reasonable to think new pheonomena like this might arise.
JesusSaysItsOk t1_j87znxp wrote
Burning energy is just that, burning... Did you smoke anything just now?
space-ModTeam t1_j884w9j wrote
Hello u/freeniechan, your submission "-10000 degrees?" has been removed from r/space because:
- Such questions should be asked in the "All space questions" thread stickied at the top of the sub.
Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.
Homeless_Man92 t1_j87wnj1 wrote
Absolute 0 is -273,15 Celsius. At this point molecules are just frozen in time and don’t move so it’s not able to produce heat.