mass-energy equivalence

mass-en·er·gy equivalence

(măs′ĕn′ər-jē)n. The physical principle that a measured quantity of energy is equivalent to a measured quantity of mass. The equivalence is expressed by Einstein's equation E = mc², where E represents energy, m the equivalent mass, and c the speed of light.

mass-energy equivalence

The principle that mass and energy can be converted into each other and that a particular quantity of mass is equivalent to a particular quantity of energy. The principle was stated mathematically by Albert Einstein as E = mc², where E is the energy in ergs, m is the mass in grams, and c is the speed of light in centimeters per second.

Thesaurus

Noun

1.

mass-energy equivalence - (physics) the principle that a measured quantity of mass is equivalent (according to relativity theory) to a measured quantity of energyprinciple, rule - a rule or law concerning a natural phenomenon or the function of a complex system; "the principle of the conservation of mass"; "the principle of jet propulsion"; "the right-hand rule for inductive fields"natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"