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Need for statistical approach in thermodynamics


Do we need any kind of statistical approach in thermodynamics? Also, is there something called statistical thermodynamics. I have heard about classical thermodynamics but not about statistical one.

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By Dani khan Answered 5 years ago

Of course. You definitely need a statistical approach in thermodynamics. Moreover, thermodynamics is suitable for the statistical approach.


By Divya Answered 5 years ago

I do agree with you Dani. Infact arguments gets exact when numbers get larger.


By Prithvi Patel Answered 5 years ago

Divya, can you provide me with an example?


By Divya Answered 5 years ago

Yes sure. Consider an election opinion poll published in a newspaper/ tv. Such a poll determines how many people were interviewed for the purpose. This number is important because, even if the polling was done without being bias, the laws of statistics state that there is an intrinsic error. This error is of order one over the square root of the number of people that were questioned.


By Deepthi G Answered 5 years ago

Prithvi, you heard it right. There exists statistical thermodynamics as well. If we go beyond classical thermodynamics and investigate then, we get the results of classical thermodynamics, and also a large number of other results. Such results enable the macroscopic parameters of the system to be calculated using knowledge of its microscopic constituents. This is nothing but statistical thermodynamics.


By Prithvi Patel Answered 5 years ago

Any references for the same?


By Deepthi G Answered 5 years ago

Here you go. https://farside.ph.utexas.edu/teaching/sm1/Thermal.pdf


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