conservation of energy

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con·ser·va·tion of en·er·gy

the principle that the total amount of energy in a closed system remains always the same, none being lost or created in any chemical or physical process or in the conversion of one kind of energy into another, within that system.

conservation of energy

[kon′sərvā′shən]
Etymology: L, conservare, to preserve
(in physics) a law stating that in any closed system the total amount of energy is constant. It is superseded by the special relativity equation e = mc2, but it is still applicable in the chemical process.

conservation of energy

The principle according to which energy cannot be created or destroyed, but is transformed into other forms.
See also: energy

conservation of energy

general principle that the total energy of a system (object or body) and its surroundings does not change, but varies in its different components.
References in periodicals archive ?
It is the direction whose development was initiated by the discovery of the law of conservation of energy.
The law of conservation of energy states that energy can't be created or destroyed.
Energy seemed to be disappearing unaccountably, and to save the law of conservation of energy Pauli suggested the existence of a particle that was electrically neutral, had no rest mass and interacted so feebly with other matter that it was almost undetectable.

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