The term Energy can refer to: Dark energy, energy in the universe responsible for the acceleration of the expansion of the universe. Energy impulse tensor, physical density density and flux of energy and momentum in space and time. Internal energy or internal energy, a form of energy that is bound to matter, a thermodynamic magnitude. Free energy, a system's free energy, a thermodynamic magnitude. Specific energy, value for the energy content of a fuel. Energy +, Knowledge Platform for Energy Professionals with Technical and Policy Interest in the Enforcement of Energy
Other specific forms of energy are: Also see
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