Equilibrium
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'''Equilibrium''' is the condition of a system in which competing influences are balanced and it may refer to:
==Biology==
* [[Equilibrioception]], the sense of balance present in humans and animals
* [[Homeostasis]], the ability of an open system, especially living organisms, to regulate its internal environment
* [[Genetic equilibrium]], theoretical state in which a population is not evolving
* [[Punctuated equilibrium]], theory in evolutionary biology
* [[Sedimentation equilibrium]], analytical ultracentrifugation method for measuring protein molecular masses in solution
==Chemistry==
* [[Chemical equilibrium]], the state in which the concentrations of the reactants and products have no net change over time
* [[Diffusion equilibrium]], when the concentrations of the diffusing substance in the two compartments are equal
* [[Donnan equilibrium]], the distribution of ion species between two ionic solutions separated by a semipermeable membrane or boundary
* [[Dynamic equilibrium]], the state in which two reversible processes occur at the same rate
* [[Equilibrium constant]], a quantity characterizing a chemical equilibrium in a chemical reaction
* [[Equilibrium unfolding]], the process of unfolding a protein or RNA molecule by gradually changing its environment
* [[Psychrometrics]] (Humidification/ Dehumidification [[Drying]])
* [[Partition equilibrium]], a type of chromatography that is typically used in GC
* [[Quasistatic equilibrium]], the quasi-balanced state of a thermodynamic system near to equilibrium in some sense or degree
* [[Schlenk equilibrium]], a chemical equilibrium named after its discoverer Wilhelm Schlenk taking place in solutions of Grignard reagents
* [[Solubility equilibrium]], any chemical equilibrium between solid and dissolved states of a compound at saturation
* [[Thermodynamic equilibrium]], the state of a thermodynamic system which is in thermal, mechanical, and chemical equilibrium
* [[Vapor-liquid equilibrium]] [[Distillation]]
==Economics==
* [[Competitive equilibrium]], economic equilibrium when all buyers and sellers are small relative to the market
* [[Economic equilibrium]], a condition in economics
* [[Equilibrium price]], the price at which supply equals demand
* [[General equilibrium]], a branch of theoretical microeconomics
* [[Intertemporal equilibrium]], an equilibrium concept over time
* [[Lindahl equilibrium]], a method proposed by Erik Lindahl for financing public goods
* [[Partial equilibrium]], one part of the general economic equilibrium
* [[Radner equilibrium]], an economic concept defined by economist Roy Radner in the context of general equilibrium
* [[Recursive competitive equilibrium]], an economic equilibrium concept associated with a dynamic program
* [[Static equilibrium (economics)]], the intersection of supply and demand in any market
* [[Sunspot equilibrium]], an economic equilibrium in which nonfundamental factors affect prices or quantities
* [[Underemployment equilibrium]], a situation in Keynesian economics with a persistent shortfall relative to full employment and potential output
===Game theory===
* [[Correlated equilibrium]], a solution concept in game theory that is more general than the well known Nash equilibrium
* [[Nash equilibrium]], a solution concept in game theory involving two or more players
** [[Quasi-perfect equilibrium]], a refinement of Nash Equilibrium for extensive form games due to Eric van Damme
** [[Sequential equilibrium]], a refinement of Nash Equilibrium for extensive form games due to David M. Kreps and Robert Wilson
* [[Symmetric equilibrium]], in game theory, an equilibrium where all players use the same strategy
* [[Trembling hand perfect equilibrium]] assumes that the players, through a "slip of the hand" or tremble, may choose unintended strategies
==Music==
* ''[[Make Love and War, The Wedlock of Equilibrium]]'', an album by [[Ordo Rosarius Equilibrio]]
* [[Equilibrium (band)]], a German Viking metal band
* "[[IX Equilibrium]]", the third LP by the black metal band Emperor
* [[Equilibrium (album)|''Equilibrium'']], an album by sludge doom band Crowbar
* [[Equilibrium (record label)]], a Portuguese record label
==Physics==
* [[Mechanical equilibrium]], the state in which the sum of the forces, and torque, on each particle of the system is zero
* [[Hydrostatic equilibrium]], the state of a system in which compression due to gravity is balanced by a pressure gradient force
* [[Equilibrium figure]]s of Earth and planets ([[Physical geodesy]])
* [[Equilibrium mode distribution]], involves light traveling in an optical waveguide or fiber
* [[Hyperbolic equilibrium point]], a mathematical concept in physics
* [[Secular equilibrium]], a state of radioactive elements in which the production rate of a daughter nucleus is balanced by its own decay rate
==Other==
* [[Equilibrium (film)|''Equilibrium'' (2002 film)]], a science-fiction film
* [[Equilibrium (seaQuest 2032 episode)|"Equilibrium" (''seaQuest 2032'' episode)]], episode of ''seaQuest 2032''
* [[Equilibrium (DS9 episode)|"Equilibrium" (''DS9'' episode)]], an episode of ''Star Trek: Deep Space Nine''
* [[Equilibrium moisture content]], the moisture content at which the wood is neither gaining nor losing moisture
* [[Equilibrium point]], node in mathematics
* [[Patterson equilibrium]], a theory used in highway traffic modelling, air-traffic modelling, business modelling, and electrical grid operation
* [[Reflective equilibrium]], the state of balance or coherence among a set of beliefs arrived at by a process of deliberative mutual adjustment
* [[Social equilibrium]], a system in which there is a dynamic working balance among its interdependent parts
* [[Equilibrium (puzzle)]], a 3D interlocking type puzzle made of 6 half circle pieces
* Equilibration is the means of cognitive development in [[Jean Piaget]]'s cognitive developmental theory.
Equilibrium, LLC - Filming in Egypt - British managed - Production company
==See also==
* [[Stability]]
* [[Steady state (disambiguation)]]
* [[Equilibristics]], e.g. juggling
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