- #1
Arham
- 26
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Hello
In Zemansky's book there is this definition of thermal equilibrium:
"Thermal equilibrium exists when there is no spontaneous change in the
coordinates of a system in mechanical and chemical equilibrium when it is
separated from its surroundings by diathermic walls. In other words, there is
no exchange of heat between the system and its surroundings."
This is vague for me. Consider a thermodynamic system in thermal contact with two heat reservoirs at different temperatures. When the system reaches steady state then there will be no change in the coordinates of system. We have a gradient of T in that case. And there will be no net exchange of heat.
What is your opinion?
Sorry for bad english. :shy:
In Zemansky's book there is this definition of thermal equilibrium:
"Thermal equilibrium exists when there is no spontaneous change in the
coordinates of a system in mechanical and chemical equilibrium when it is
separated from its surroundings by diathermic walls. In other words, there is
no exchange of heat between the system and its surroundings."
This is vague for me. Consider a thermodynamic system in thermal contact with two heat reservoirs at different temperatures. When the system reaches steady state then there will be no change in the coordinates of system. We have a gradient of T in that case. And there will be no net exchange of heat.
What is your opinion?
Sorry for bad english. :shy:
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