Wiktionary
free energy
n. 1 (context physics English) The Helmholtz free energy, ''A'' (the internal energy of a system minus the product of its entropy and absolute temperature) 2 (context physics English) The Gibbs free energy, ''G'' (the enthalpy of a system minus the product of its entropy and absolute temperature)
Wikipedia
Free energy
Free energy may refer to:
In science:
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Thermodynamic free energy, the energy in a physical system that can be converted to do work, in particular:
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Helmholtz free energy (A=U–TS), 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 (G=H–TS), the energy that can be converted into work at a constant temperature and pressure throughout a system
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Helmholtz free energy (A=U–TS), the energy that can be converted into work at a constant temperature and volume
- Variational free energy, a construct from information theory that is used in variational Bayesian methods
In economics:
- Energy from sources that do not require an input which has to be paid for, (usually a sub-set of renewable energy)
In pseudoscience:
- Free energy device, a hypothetical perpetual motion device that creates energy, thereby contradicting the laws of thermodynamics
In popular culture:
- Free energy suppression, a conspiracy theory that advanced energy technologies are being suppressed by governments and/or special interest groups
In music:
- Free Energy (band), a 5-piece rock band on DFA Records
Free Energy (band)
''
Free Energy is an American rock band based out of Philadelphia, Pennsylvania. The members include Scott Wells, Paul Sprangers, Evan Wells, and Nicholas Shuminsky.