Free energy

Free energy

Free energy may refer to:

In science:
* Thermodynamic free energy, the energy in a physical system that can be converted to do work, in particular:
** Helmholtz free energy, the energy that can be converted into work at a constant temperature and volume
***Work content, a related concept used in chemistry
** Gibbs free energy, the energy that can be converted into work at a constant temperature and pressure

In conspiracy theories:
*Free energy suppression, a conspiracy theory which states that special interest groups suppress technologies that could provide energy at very little cost

ee also

*Free-energy relationship a relation between the reaction rate or equilibrium constants of two series of chemical reactions
* Free energy perturbation, a method based on statistical mechanics that is used in computational chemistry for computing free energy differences


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  • free energy — Thermodynamics. 1. See Gibbs function. 2. See Helmholtz function. * * * Measure of the total combined energies within a system, derived from heats of transformation, disorder, and other forms of internal energy (e.g., electrostatic charges). A… …   Universalium

  • free energy — Gibbs free energy (G) the thermodynamic function G = H − TS, where H is enthalpy, T absolute temperature, and S entropy. For chemical reactions occurring at a constant temperature and pressure, the free energy change ΔG =… …   Medical dictionary

  • free energy — (= Gibbs free energy, G) A thermodynamic term used to describe the energy that may be extracted from a system at constant temperature and pressure. In biological systems the most important relationship is: DG = RTln(Keq), where Keq is an… …   Dictionary of molecular biology

  • free energy — noun a) The difference between the internal energy of a system and the product of its entropy and absolute temperature b) The Gibbs free energy …   Wiktionary

  • free energy — a thermodynamic quantity that is a function of both the internal energy and entropy (or randomness) of a system; at equilibrium the free energy is at a minimum …   Mechanics glossary

  • free energy — Helmholco energija statusas T sritis Standartizacija ir metrologija apibrėžtis Laisvoji energija arba izochorinis potencialas – termodinaminės sistemos parametras, kai sistemos tūris ir temperatūra nekinta. atitikmenys: angl. free energy;… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • free energy — Helmholco energija statusas T sritis chemija apibrėžtis Termodinaminės sistemos parametras, kai sistemos tūris ir temperatūra nekinta. atitikmenys: angl. free energy; Helmholtz energy; isochoric potential rus. изохорный потенциал; свободная… …   Chemijos terminų aiškinamasis žodynas

  • free energy — laisvoji energija statusas T sritis fizika atitikmenys: angl. free energy vok. freie Energie, f rus. свободная энергия, f pranc. énergie libre, f …   Fizikos terminų žodynas

  • Free energy suppression — is a conspiracy theory that claims that advanced technology that would reshape current electrical generation methods is being suppressed by special interest groups. These groups are usually related to the oil industry, to whom current energy… …   Wikipedia

  • Free energy perturbation — (FEP) theory is a method based on statistical mechanics that is used in computational chemistry for computing free energy differences from molecular dynamics or Metropolis Monte Carlo simulations. The FEP method was introduced by R. W. Zwanzig in …   Wikipedia

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