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- Helmholtz_free_energy abstract "In thermodynamics, the Helmholtz free energy is a thermodynamic potential that measures the “useful” work obtainable from a closed thermodynamic system at a constant temperature. The negative of the difference in the Helmholtz energy is equal to the maximum amount of work that the system can perform in a thermodynamic process in which temperature is held constant. If the volume is not held constant, part of this work will be performed on the environment. The Helmholtz energy is commonly used for systems held at constant volume. Since in this case no work is performed on the environment, the drop in the Helmholtz energy is equal to the maximum amount of useful work that can be extracted from the system. For a system at constant temperature and volume, the Helmholtz energy is minimized at equilibrium.The Helmholtz free energy was developed by Hermann von Helmholtz, a German physicist, and is usually denoted by the letter A (from the German “Arbeit” or work), or the letter F . The IUPAC recommends the letter A as well as the use of name Helmholtz energy. In physics, the letter F can also be used to denote the Helmholtz energy, as Helmholtz energy is sometimes referred to as the Helmholtz function, Helmholtz free energy, or simply free energy (not to be confused with Gibbs free energy).While Gibbs free energy is most commonly used as a measure of thermodynamic potential, especially in the field of chemistry, it is inconvenient for some applications that do not occur at constant pressure. For example, in explosives research, Helmholtz free energy is often used since explosive reactions by their nature induce pressure changes. It is also frequently used to define fundamental equations of state of pure substances.".
- Helmholtz_free_energy wikiPageExternalLink helmholtz.html.
- Helmholtz_free_energy wikiPageExternalLink IAPWS95-Rev.pdf.
- Helmholtz_free_energy wikiPageID "255447".
- Helmholtz_free_energy wikiPageRevisionID "604944954".
- Helmholtz_free_energy hasPhotoCollection Helmholtz_free_energy.
- Helmholtz_free_energy subject Category:Concepts_in_physics.
- Helmholtz_free_energy subject Category:State_functions.
- Helmholtz_free_energy subject Category:Thermodynamic_free_energy.
- Helmholtz_free_energy type Abstraction100002137.
- Helmholtz_free_energy type Cognition100023271.
- Helmholtz_free_energy type Concept105835747.
- Helmholtz_free_energy type Content105809192.
- Helmholtz_free_energy type Function113783816.
- Helmholtz_free_energy type FundamentalPhysicsConcepts.
- Helmholtz_free_energy type Idea105833840.
- Helmholtz_free_energy type MathematicalRelation113783581.
- Helmholtz_free_energy type PsychologicalFeature100023100.
- Helmholtz_free_energy type Relation100031921.
- Helmholtz_free_energy type StateFunctions.
- Helmholtz_free_energy comment "In thermodynamics, the Helmholtz free energy is a thermodynamic potential that measures the “useful” work obtainable from a closed thermodynamic system at a constant temperature. The negative of the difference in the Helmholtz energy is equal to the maximum amount of work that the system can perform in a thermodynamic process in which temperature is held constant. If the volume is not held constant, part of this work will be performed on the environment.".
- Helmholtz_free_energy label "Energia libera di Helmholtz".
- Helmholtz_free_energy label "Energia livre de Helmholtz".
- Helmholtz_free_energy label "Energia swobodna Helmholtza".
- Helmholtz_free_energy label "Energía de Helmholtz".
- Helmholtz_free_energy label "Freie Energie".
- Helmholtz_free_energy label "Helmholtz free energy".
- Helmholtz_free_energy label "Helmholtzenergie".
- Helmholtz_free_energy label "Свободная энергия Гельмгольца".
- Helmholtz_free_energy label "طاقة هلمهولتز الحرة".
- Helmholtz_free_energy label "亥姆霍兹自由能".
- Helmholtz_free_energy label "自由エネルギー".
- Helmholtz_free_energy sameAs Helmholtzova_volná_energie.
- Helmholtz_free_energy sameAs Freie_Energie.
- Helmholtz_free_energy sameAs Energía_de_Helmholtz.
- Helmholtz_free_energy sameAs Energia_libera_di_Helmholtz.
- Helmholtz_free_energy sameAs 自由エネルギー.
- Helmholtz_free_energy sameAs 헬름홀츠_자유_에너지.
- Helmholtz_free_energy sameAs Helmholtzenergie.
- Helmholtz_free_energy sameAs Energia_swobodna_Helmholtza.
- Helmholtz_free_energy sameAs Energia_livre_de_Helmholtz.
- Helmholtz_free_energy sameAs m.01lvr4.
- Helmholtz_free_energy sameAs Q865821.
- Helmholtz_free_energy sameAs Q865821.
- Helmholtz_free_energy sameAs Helmholtz_free_energy.
- Helmholtz_free_energy wasDerivedFrom Helmholtz_free_energy?oldid=604944954.
- Helmholtz_free_energy isPrimaryTopicOf Helmholtz_free_energy.