A geometria como instrumento heurístico da reformulação da termodinâmica na representação de ciclos para a de potenciais

Jojomar Lucena Silva, José Raimundo Novaes Chiappin


History shows that up to 1870’s, the thermodynamic cycles, particularly Carnot’s cycle, were the most important heuristic instruments as much to formulate the general laws of physics as well to deduce the experimental laws. From this moment on, this instrument falls into disuse with surprising rapidity. At the end of this decade emerges a new thermodynamic formulation, proposed by Gibbs, the thermodynamics of the potentials. This sudden transition from thermodynamic of cycles to potentials was triggered by the difficult to approach the emergence of the phase transition phenomena with the diagrammatic method. The main objective of the article is, then, to analyze the consequences of the substitution, by Gibbs, of the diagrammatic by the geometric method, particularly, its heuristic potential related to the proposal of the formulation of the thermodynamic of potentials.


Gibbs; Carnot cycle; thermodynamic of cycles; thermodynamic of potentials; phase transitions

DOI: https://doi.org/10.5007/1808-1711.2017v21n3p291

Copyright (c) 2018 Jojomar Lucena Silva, José Raimundo Novaes Chiappin


Principia: an internationnal journal of epistemology
Published by NEL - Epistemology and Logic Research Group
Federal University of Santa Catarina - UFSC
Center of Philosophy and Human Sciences – CFH
Campus Reitor João David Ferreira Lima
Florianópolis, Santa Catarina - Brazil
CEP: 88040-900

 ISSN: 1414-4217
EISSN: 1808-171

e-mail: principia@contato.ufsc.br