free energy

Noun
  1. (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work;
    The units of energy are joules or ergs (synset 111472635)
    "energy can take a wide variety of forms"
    referred to in: natural philosophy, physics - the science of matter and energy and their interactions
    is a type of: physical phenomenon - a natural phenomenon involving the physical properties of matter and energy
    subtypes:
    • activation energy, energy of activation - the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur
    • alternative energy - energy derived from sources that do not use up natural resources or harm the environment
    • atomic energy, nuclear energy - the energy released by a nuclear reaction
    • binding energy, separation energy - the energy required to separate particles from a molecule or atom or nucleus; equals the mass defect
    • chemical energy - that part of the energy in a substance that can be released by a chemical reaction
    • electrical energy, electricity, power - energy made available by the flow of electric charge through a conductor
    • energy level, energy state - a definite stable energy that a physical system can have; used especially of the state of electrons in atoms or molecules
    • rest energy - the energy equivalent to the mass of a particle at rest in an inertial frame of reference; equal to the rest mass times the square of the speed of light
    • work - (physics) a manifestation of energy; the transfer of energy from one physical system to another expressed as the product of a force and the distance through which it moves a body in the direction of that force
    • heat, heat energy - a form of energy that is transferred by a difference in temperature
    • mechanical energy - energy in a mechanical form
    • radiant energy - energy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter
    • radiation - energy that is radiated or transmitted in the form of rays or waves or particles
    same as: energy

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