Meaning of mass-energy | Babel Free

Definitions

1. Mass and energy as a unified concept.
   countable, uncountable
2. The energy associated with any given mass according to special relativity, E = mc².
   countable, uncountable

Examples

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

“In higher-energy physics, mass and energy eventually become meaningless as individual concepts; a particle's so-called "mass" is actually mass-energy and is often given equivalently in units of either mass (GeV/c²) or energy (GeV).”

“For equations normalized with Planck units, the quantities of mass and energy become numerically identical, revealing their true nature as mass-energy.”

CEFR level