types:
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activation energy, energy of activation
the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur
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alternative energy
energy derived from sources that do not use up natural resources or harm the environment
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atomic energy, nuclear energy
the energy released by a nuclear reaction
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binding energy, separation energy
the energy required to separate particles from a molecule or atom or nucleus; equals the mass defect
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chemical energy
that part of the energy in a substance that can be released by a chemical reaction
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electrical energy, electricity
energy made available by the flow of electric charge through a conductor
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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
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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
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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
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heat, heat energy
a form of energy that is transferred by a difference in temperature
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mechanical energy
energy in a mechanical form
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radiant energy
energy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter
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radiation
energy that is radiated or transmitted in the form of rays or waves or particles
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AC, alternating current, alternating electric current
an electric current that reverses direction sinusoidally
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atomic power, nuclear power
nuclear energy regarded as a source of electricity for the power grid (for civilian use)
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ionizing radiation
high-energy radiation capable of producing ionization in substances through which it passes
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cosmic radiation
radiation coming from outside the solar system
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DC, direct current, direct electric current
an electric current that flows in one direction steadily
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signal
an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes
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electromagnetic radiation, electromagnetic wave, nonparticulate radiation
radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
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geothermal energy
energy derived from the heat in the interior of the earth
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K.E., kinetic energy
the mechanical energy that a body has by virtue of its motion
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heat of dissociation
the heat required for a fluid substance to break up into simpler constituents
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heat of formation
the heat evolved or absorbed during the formation of one mole of a substance from its component elements
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heat of solution
the heat evolved or absorbed when one mole of a substance is dissolved in a large volume of a solvent
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heat of transformation, latent heat
heat absorbed or radiated during a change of phase at a constant temperature and pressure
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specific heat
the heat required to raise the temperature of one gram of a substance one degree centigrade
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luminous energy
the energy associated with visible light
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P.E., potential energy
the mechanical energy that a body has by virtue of its position; stored energy
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solar energy, solar power
energy from the sun that is converted into thermal or electrical energy
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solar radiation
radiation from the sun
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wind generation, wind power
power derived from the wind (as by windmills)