An Account of Thermodynamic Entropy

Author(s): Alberto Gianinetti

DOI: 10.2174/9781681083933117010017

Changes of Entropy: The Fundamental Equation and the Chemical Potential

Pp: 112-130 (19)

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Abstract

SHS investigation development is considered from the geographical and historical viewpoint. 3 stages are described. Within Stage 1 the work was carried out in the Department of the Institute of Chemical Physics in Chernogolovka where the scientific discovery had been made. At Stage 2 the interest to SHS arose in different cities and towns of the former USSR. Within Stage 3 SHS entered the international scene. Now SHS processes and products are being studied in more than 50 countries.

Abstract

Any change in the physical world is consequent to a net force levelling down available energy. Different features of a system, or process, can determine on which properties of the system the levelling force eventually operates. Examples are the equilibration of the pressure of a gas, of the temperature of bodies, of the concentration of solutions, of the position of a body with respect to a fluid in the presence of a gravitational field, and so on. All these phenomena occur because of the levelling force and are associated with an entropy increase. The entropy increase can be calculated through specific relationships.

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