Talk:Absolute zero: Difference between revisions
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imported>Peter Jackson |
imported>Paul Wormer |
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:Doesn't the 3rd Law of Thermodynamics say it's unattainable? [[User:Peter Jackson|Peter Jackson]] 09:55, 14 December 2009 (UTC) | :Doesn't the 3rd Law of Thermodynamics say it's unattainable? [[User:Peter Jackson|Peter Jackson]] 09:55, 14 December 2009 (UTC) | ||
::I see that Ro changed the wording somewhat, but I still don't know what "real world" is supposed to mean. Do you mean "outside the laboratory" or "in nature"? Indeed the 3rd law states the unattainability and 10<sup>−9</sup> K is ''very'' close to zero, but ''not'' equal to zero. Some experiments are already done at a few hundred picokelvin, so IMHO the non-attainability is pretty academic. --[[User:Paul Wormer|Paul Wormer]] 14:36, 14 December 2009 (UTC) | |||
Revision as of 08:37, 14 December 2009
real world conditions
What do you mean by real world conditions? I believe that on Earth (in the outdoors) the lowest temperatures are around −50 to −60 °C. However in the laboratory people routinely measure at nanokelvin temperatures (10−9 K), which is very close to the absolute zero.--Paul Wormer 09:51, 14 December 2009 (UTC)
- Doesn't the 3rd Law of Thermodynamics say it's unattainable? Peter Jackson 09:55, 14 December 2009 (UTC)
- I see that Ro changed the wording somewhat, but I still don't know what "real world" is supposed to mean. Do you mean "outside the laboratory" or "in nature"? Indeed the 3rd law states the unattainability and 10−9 K is very close to zero, but not equal to zero. Some experiments are already done at a few hundred picokelvin, so IMHO the non-attainability is pretty academic. --Paul Wormer 14:36, 14 December 2009 (UTC)