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free energy

/friː ˈɛnədʒi/

Tradução: Em termodinâmica, a energia de um sistema disponível para realizar trabalho, como a energia livre de Gibbs ou de Helmholtz. Em contextos alternativos, energia obtida do ambiente sem custo, frequentemente associada a motores perpétuos.

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/friː ˈɛnədʒi/C1formalscientific
  • ptEm termodinâmica, a energia de um sistema disponível para realizar trabalho, como a energia livre de Gibbs ou de Helmholtz. Em contextos alternativos, energia obtida do ambiente sem custo, frequentemente associada a motores perpétuos.

A theoretical concept referring to energy that can be extracted from the environment at no cost, often associated with perpetual motion or alternative energy claims; in thermodynamics, it refers to the energy in a system available to do work.

  1. Thermodynamic potentialC1formal

    In physics and chemistry, the energy in a system that is available to do useful work, often referring to Gibbs free energy or Helmholtz free energy.

    ptEnergia livre

    • The change in Gibbs free energy determines whether a reaction is spontaneous.
    • Helmholtz free energy is used to analyze systems at constant volume.
    • Calculating free energy helps predict chemical equilibrium.
  2. Perpetual motion conceptB2informal

    A hypothetical, often pseudoscientific, concept of obtaining energy from a source that supposedly requires no input and is not subject to the laws of thermodynamics.

    ptConceito de movimento perpétuo

    • Many online videos claim to demonstrate free energy devices, but they are usually hoaxes.
    • The idea of free energy violates the first law of thermodynamics.
    • Scientists dismiss most free energy claims as pseudoscience.