Wanderlingh, F. (1992) Dissipation and entropy production: an epistemological attempt to unify mechanics and thermodynamics. Accademia Peloritana dei Pericolanti, Classe di Scienze FF. MM. NN., LXX . pp. 293-310.
|PDF - Submitted Version |
Download (5Mb) | Preview
In the usual physical teaching, Mechanics and Thermodynamics seem to belong to different paradigms, notwithstanding their common fundamental role. Key-words for stressing such a contrast are "reversibility" and "irreversibility", "probability" and "chance" or, in a metaphorical sense, "Newtonian" and "Aristotelic".
In my opinion we can recognise here a cause for the conceptual blunders that characterize the "physical" explanation of the everyday phenomena furnished by non-specia1ized people, even when an orthodox physical teaching has been done.
In the present paper I try to expose an unifying point of view, based on the naive concept of "memory function", that promote entropy to a more fundamental role. According to my proposal such a quantity is to be considered also in the mechanical description. The "ideal" reversible mechanics appears as a special limiting case that, moreover, can lead to some inconsistency. The opposite limiting case gives rise to the usual thermodynamics that, although in a different framework, is as well strictly deterministic.
A bridge is furnished by fluctuations. According to the present idea, fluctuation-dissipation theorem appears in a rather natural way, and its role in bridging mechanics and thermodynamics grounds the concept of Temperature.
|Subjects:||M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Fisiche, Matematiche e Naturali > 1992 > Supplemento 1|
M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Medico-Biologiche > 1992 > Supplemento 1
M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Giuridiche, Economiche e Politiche > 1992 > Supplemento 1
M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Lettere, Filosofia e belle Arti > 1992 > Supplemento 1
|Depositing User:||Dr A F|
|Date Deposited:||01 Oct 2012 12:52|
|Last Modified:||01 Oct 2012 12:52|
Actions (login required)