free energy
Usable work capacity
Free energy is energy in a system available to do useful work.
In thermodynamics, it accounts for both total energy and entropy—the portion that dissipates as disorder.
Gibbs free energy determines whether chemical reactions occur spontaneously.
In popular usage, free energy often refers to perpetual motion claims or supposed devices that produce energy from nothing, which violate physical laws.
- perpetual motionUnending movement without input
- perpetual motion machineSelf-sustaining impossible mechanism
- heat deathUniverse's final entropic state
- closed systemExchange-free bounded region
- pseudoscienceBogus methodology posing as factual
Gibbs · isothermal · spontaneity · activation · kinetic · phase transitions · chemical · generator · off the grid · unlimited · wind · Tesla · equilibrium · energetics · work · liberation · reversible · solar
- energyelectricity, power, oil, fuel, gas
- chemistryatom, atoms, organic chemistry, molecule, chemistry
- pseudosciencehomeopathy, astrology, phrenology, numerology, palmistry
- Fringe Sciencecold fusion, perpetual motion, alchemy, astrology, phrenology
- physical chemistrythermodynamics, kinetics, chemical equilibrium, reaction rates, entropy
- statistical mechanicsentropy, thermal equilibrium, phase transition, critical point, fluctuations
free, energy, freedom, energetic, freed, freely, energize, synergy, energizing