English Dictionary

mass-energy

noun

(physics) Mass and energy as a unified concept. / (also spelled mass energy) The energy associated with any given mass according to special relativity, E = mc².

The theory of relativity introduced the concept of mass-energy equivalence.

意味（1）

(physics) Mass and energy as a unified concept.

Whereas in classical physics mass and energy are distinct concepts, on relativistic scales, they become indistiguishable and are replaced by mass-energy.

意味（2）

(also spelled mass energy) The energy associated with any given mass according to special relativity, E = mc².