State of no net thermal energy flow between two connected systems
Not to be confused with Thermodynamic equilibrium.
Two physical systems are in thermal equilibrium if there is no net flow of thermal energy between them when they are connected by a path permeable to heat. Thermal equilibrium obeys the zeroth law of thermodynamics. A system is said to be in thermal equilibrium with itself if the temperature within the system is spatially uniform and temporally constant.
Systems in thermodynamic equilibrium are always in thermal equilibrium, but the converse is not always true. If the connection between the systems allows transfer of energy as 'change in internal energy' but does not allow transfer of matter or transfer of energy as work, the two systems may reach thermal equilibrium without reaching thermodynamic equilibrium.
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thermalequilibrium if there is no net flow of thermal energy between them when they are connected by a path permeable to heat. Thermalequilibrium obeys...
thermodynamic equilibrium, no macroscopic change occurs. Systems in mutual thermodynamic equilibrium are simultaneously in mutual thermal, mechanical,...
is that if two systems are each in thermalequilibrium with a third system, then they are also in thermalequilibrium with each other. This statement helps...
thermodynamics defines thermalequilibrium and forms a basis for the definition of temperature: If two systems are each in thermalequilibrium with a third system...
in thermalequilibrium with a third system, then the two systems are in thermalequilibrium with each other. Two systems are said to be in thermal equilibrium...
each in thermalequilibrium with a third, they are also in thermalequilibrium with each other. This statement implies that thermalequilibrium is an equivalence...
or angle of incidence. The radiation emitted by a black body in thermalequilibrium with its environment is called black-body radiation. The name "black...
bodies is called thermal contact conductance (or thermal contact resistance). Thermalequilibrium - When two objects A and B are in thermal contact and there...
states of internal thermodynamic equilibrium is transitive. It follows from this that the relation 'is in thermalequilibrium with' is transitive, which is...
Thermal radiation is electromagnetic radiation emitted by the thermal motion of particles in matter. Thermal radiation transmits as an electromagnetic...
Radiative equilibrium is the condition where the total thermal radiation leaving an object is equal to the total thermal radiation entering it. It is one...
simply equipartition. The original idea of equipartition was that, in thermalequilibrium, energy is shared equally among all of its various forms; for example...
violation. C-symmetry and CP-symmetry violation. Interactions out of thermalequilibrium. Baryon number violation is a necessary condition to produce an excess...
position (green). In particular, the late time behavior depicts thermalequilibrium. Consider a free particle of mass m {\displaystyle m} with equation...
cooler, without reaching thermalequilibrium. This is distinct from a material's insulative value, which reduces a building's thermal conductivity, allowing...
engineers. Thermal neutrality is maintained when the heat generated by human metabolism is allowed to dissipate, thus maintaining thermalequilibrium with the...
interpretation of thermodynamics, the H-theorem, transport theory, thermalequilibrium, the equation of state of gases, and similar subjects, occupy about...
composite system consisting of the two bodies is far from equilibrium, since thermalequilibrium for this composite system requires that the two bodies be...
Thermal pollution, sometimes called "thermal enrichment", is the degradation of water quality by any process that changes ambient water temperature. Thermal...
E_{12}=h\nu _{12},} h being Planck's constant. If the group of atoms is in thermalequilibrium, it can be shown from Maxwell–Boltzmann statistics that the ratio...
if such systems have equal temperatures, they are at thermalequilibrium. However, this equilibrium is stable only if the systems have positive heat capacities...
estimates based on side reactions that produce neutrons in a plasma in thermalequilibrium. Of course, the reactants should also be mixed in the optimal proportions...
called the thermal conductivity tensor. An implicit assumption in the above description is the presence of local thermodynamic equilibrium, which allows...
the amount of insulation that allows a person at rest to maintain thermalequilibrium in an environment at 21°C (70°F) in a normally ventilated room (0...