conservation of energy
noun Physics.
the principle that in a system that does not undergo any force from outside the system, the amount of energy is constant, irrespective of its changes in form.
Also called
law of conservation of energy.
Origin of conservation of energy
First recorded in 1850–55
Words nearby conservation of energy
Example sentences from the Web for conservation of energy
We have already seen that Dr. Mayer, of conservation-of-energy fame, was the first to ask this question.
A History of Science, Volume 5(of 5) |Henry Smith Williams
British Dictionary definitions for conservation of energy
conservation of energy
noun
the principle that the total energy of any isolated system is constant and independent of any changes occurring within the system
Scientific definitions for conservation of energy
conservation of energy
A principle stating that the total energy of a closed system remains constant over time, regardless of other possible changes within the system. It is related to the symmetry of time invariance. See also invariance thermodynamics.