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I think it is impossible to attain this temperature in normal circumstances.

As energy would be applied from surrounding areas and energy flow from higher to lower potential and hence all the heat will move and increase the temperature and it is not possible to get a container with infinite insulation.

But Can it be done in an abstract way like the abstract parallel universe is there. If the above statement is wrong, so is it possible to do it, if yes then please tell how?

I have seen about the question regarding vacuum. It describes the case correctly though I still want to know is there anything (except vacuum as it isn't the one that satisfies the condition.) Is there any way to create conditions even if we don't have the technology right now to attain absolute 0 temperature.

Qmechanic
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Mohd Saad
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1 Answers1

5

No, one cannot attain the absolute zero, but one can approach very closely to it. I don't know what is the record of low temperature these days by micro- and nano-Kelvin temperatures are routinely used in laboratory experiments.

Cooling an object means subtracting from it the smaller and smaller quantities of energy. Thus, according to the energy uncertainty relation $\Delta E \Delta t\geq \hbar$ - that is, the closer one approaches to zero, the longer it takes. Time of an experiment cannot be possibly longer than the lifetime of the Universe.

Note that temperature is well-defined only for macroscopic collections of objects. Thus, when devising experiments for cooling, it is important that temperature remains temperature. There are many cases where effective temperature is defined, leading to alleged thermodynamic paradoxes, which are really due to different meaning of the temperature (e.g., lasers are often characterized by a negative temperature, and zero temperature is not a stretch of imagination in this case).

Roger V.
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