The State Quantities and the Quantities Describing the Evolution

  • Michel FrémondEmail author
Part of the Lecture Notes of the Unione Matematica Italiana book series (UMILN, volume 13)


As already said, the state quantities are the quantities chosen by the scientist or the engineer to describe a phenomenon he wants to predict. The state quantities define the equilibrium: when the state quantities remain constant with respect to the time, the phenomenon is at an equilibrium. The notion of equilibrium is subjective and depends on the sophistication of the modelling, i.e., on the choice of the state variables.

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Dipartimento di Ingegneria CivileUniversità di Roma “Tor Vergata”RomaItaly

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