thermal equilibrium

The condition under which two substances in physical contact with each other exchange no heat energy. Two substances in thermal equilibrium are said to be at the same temperature.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun

thermal equilibrium - a state in which all parts of a system are at the same temperature

equilibrium - a stable situation in which forces cancel one another

Translations

equilibrio termico

Mentioned in

References in periodicals archive

In case of thermal equilibrium, the side wall temperature corresponds to [T.sub.eq].

Novel Ventilation Concepts for Efficient Heating Dynamics of Vehicle Passenger Compartments

Kirchhoff's law extended much beyond Stewart's [3] and stated that, given thermal equilibrium, the radiation contained within an arbitrary cavity was depended only on the temperature of the enclosure and on the frequency of observation [1,2].

Kirchhoff's Law of Thermal Emission: Blackbody and Cavity Radiation Reconsidered

It should be noted that, according to Kirchhoff's law, an object emits as much radiation as it absorbs in thermal equilibrium, therefore it is reasonable we study the emitter's radiation spectrum from calculating its optical absorption.

A Nanostructure-Based High-Temperature Selective Absorber-Emitter Pair for a Solar Thermophotovoltaic System with Narrowband Thermal Emission

Logarithmic corrections arises from loop quantum gravity due to thermal equilibrium and quantum fluctuations [68-74].

Thermodynamics of Ricci-Gauss-Bonnet Dark Energy

While Calcote and King did conclude that thermal equilibrium does not exist between the ions and their parent species, and that chemi-ions could be responsible for the higher ion concentrations deduced from experiments, they did not extend their computations to include these effects.

Charged Species Concentration in Combusting Mixtures Using Equilibrium Chemistry

According to the above it is clear that the nature of this maximum is associated with the process of slowing down of neutrons in a non-equilibrium neutron system, which is generated by an isotropic source of neutrons in thermalized system of nuclei of moderation medium, and cannot be explained only by thermalized part of neutron system, i.e., thermal equilibrium part of the neutron system, and cannot be described by Maxwell distribution.

THE NEUTRON MODERATION THEORY, TAKING INTO ACCOUNT A MODERATING MEDIUM TEMPERATURE

This photographically fast Newtonian reflector is built around a 150-mm parabolic primary mirror manufactured from B270 glass that reaches thermal equilibrium quickly.

Budget astrograph

The porous media model energy equation can use the thermal equilibrium model or the thermal nonequilibrium model.

Prediction of Flow and Temperature Distributions in a High Flux Research Reactor Using the Porous Media Approach

Because of the difference in thermal diffusivity between the metal foam and the PCM, thermal equilibrium is not assured.

Study of the solidification process of a phase change material contained in a heat exchanger with the presence of a porous medium