Next Article in Journal
Product Design Time Forecasting by Kernel-Based Regression with Gaussian Distribution Weights
Next Article in Special Issue
Thermodynamic Analysis of Resources Used in Thermal Spray Processes: Energy and Exergy Methods
Previous Article in Journal
Investigating Aging-Related Changes in the Coordination of Agonist and Antagonist Muscles Using Fuzzy Entropy and Mutual Information
Previous Article in Special Issue
Numerical Investigation of Thermal Radiation and Viscous Effects on Entropy Generation in Forced Convection Blood Flow over an Axisymmetric Stretching Sheet
Article Menu

Export Article

Open AccessArticle
Entropy 2016, 18(6), 233;

Entropic Measure of Time, and Gas Expansion in Vacuum

Ural Federal University, 19 Mira St., Ekaterinburg 620002, Russia
Institute of Industrial Ecology, Russian Academy of Sciences, 20 S. Kovalevskaya St., Ekaterinburg 620219, Russia
Author to whom correspondence should be addressed.
Academic Editors: Milivoje M. Kostic and Kevin H. Knuth
Received: 29 March 2016 / Revised: 31 May 2016 / Accepted: 9 June 2016 / Published: 21 June 2016
(This article belongs to the Special Issue Exploring the Second Law of Thermodynamics)
Full-Text   |   PDF [845 KB, uploaded 21 June 2016]   |  


The study considers advantages of the introduced measure of time based on the entropy change under irreversible processes (entropy production). Using the example of non-equilibrium expansion of an ideal gas in vacuum, such a measure is introduced. It is shown that, in the general case, this measure of time proves to be nonlinearly related to the reference measure assumed uniform by convention. The connection between this result and the results of other authors investigating the measure of time in some biological and cosmological problems is noted. View Full-Text
Keywords: entropy production; intrinsic and chronological times; ideal gas expansion entropy production; intrinsic and chronological times; ideal gas expansion

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Martyushev, L.M.; Shaiapin, E.V. Entropic Measure of Time, and Gas Expansion in Vacuum. Entropy 2016, 18, 233.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top