Gold Supporter
Bronze Supporter
- Messages
- 25,106
- Reactions
- 60,086
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
When two initially isolated systems in separate but nearby regions of space, each in thermodynamic equilibrium with itself but not necessarily with each other, are then allowed to interact, they will eventually reach a mutual thermodynamic equilibrium. The sum of the entropies of the initially isolated systems is less than or equal to the total entropy of the final combination. Equality occurs just when the two original systems have all their respective intensive variables (temperature, pressure) equal; then the final system also has the same values.