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For the 2002 science fiction movie see Equilibrium (2002 movie)

Equilibrium or balance is any of a number of related phenomena in the natural and social sciences. In general, a system is said to be in a state of equilibrium if all influences on the system are cancelled by the effects of others. A related concept is stability; an equilibrium may or may not be stable.

Some specific examples are:

An addiction is any of various forms of unbalanced behavior.

In electricity, a balanced signal is also called a differential signal.

Further reading

Mechanical equilibrium:

  • Marion & Thornton, Classical Dynamics of Particles and Systems. Fourth Edition, Harcourt Brace & Company (1995).

Thermodynamic equilibrium:

  • F. Mandl, Statistical Physics, Second Edition, John Wiley & Sons (1988).

Nash equilibrium:

  • A. Mehlmann, The Game's Afoot! Game Theory in Myth and Paradox, American Mathematical Society (2000).


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