Equilibrium may refer to:
In the physical sciences
- Thermodynamic equilibrium, when internal processes of a system cause no overall change in temperature or pressure
- Dynamic equilibrium, when two reversible processes (in thermodynamics) occur at the same rate
- Chemical equilibrium, when a chemical reaction proceeds at the same rate as its reverse reaction, with no change in the amount of each compound
- Mechanical equilibrium, when the sum of the forces and moments on each particle of a system is zero
- Quasistatic equilibrium, when internal processes change gradually from one equilibrium state to the next
In biological science
- Punctuated equilibrium, a part of evolutionary theory that states that speciation occurs relatively quickly with long periods of little change in between.
In economics
In game theory
- Nash equilibrium an optimal collective strategy in a game involving two or more players
In ethics
In entertainment
See also
The content of this page is retrieved from http://en.wikipedia.org/wiki/Equilibrium under GFDL
