Messanae Universitas Studiorum

Dissipation and entropy production: an epistemological attempt to unify mechanics and thermodynamics

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.

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    Abstract

    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.

    Item Type: Article
    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
    Divisions: UNSPECIFIED
    Depositing User: Dr A F
    Date Deposited: 01 Oct 2012 12:52
    Last Modified: 01 Oct 2012 12:52
    URI: http://cab.unime.it/mus/id/eprint/801

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