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 uniform temperature and pressure throughout a system
  • Variational free energy, a construct from Information theory that is used in Variational Bayesian methods

In pseudoscience:

  • Free energy device, a hypothetical device that creates energy in a hypothetical isolated system, i.e. without any external input, thereby contradicting the laws of thermodynamics
  • Free energy suppression, a conspiracy theory that advanced energy technologies are being suppressed by special interest groups

In music

  • Free Energy (band), a 5-piece rock band on DFA Records

Famous quotes containing the words free and/or energy:

    “The American people owe it to themselves, and to the cause of free Government, to prove by their establishments for the advancement and diffusion of knowledge, that their political Institutions ... are as favorable to the intellectual and moral improvement of Man as they are conformable to his individual and social rights.”
    —James Madison (1751–1836)

    “The welfare, the happiness, the energy and spirit of the men and women who do the daily work ... is the underlying necessity of all prosperity.... There can be nothing wholesome unless their life is wholesome; there can be no contentment unless they are contented.”
    —Woodrow Wilson (1856–1924)