mass-energy

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Mass and energy as a unified concept

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

The energy associated with any given mass according to special relativity, E = mc2
mass-to-energy

Mass-energy conversion occurs during nuclear fusion and fission.

mass-energy equivalence
(physics) the principle that a measured quantity of mass is equivalent (according to relativity theory) to a measured quantity of energy
mass energy
The energy present in an object because of its mass

Even a minuscule quantity of matter contains an incredible amount of mass energy.

Einstein's mass-energy relation
Relationship between mass (m) and energy (E) in Albert Einstein's special theory of relativity, expressed E = mc^2, where c equals 186,000 mi/second (300,000 km/second), the speed of light. Whereas mass and energy were viewed as distinct in earlier physical theories, in special relativity a body's mass can be converted into energy in accordance with Einstein's formula. Such a release of energy decreases the body's mass (see conservation law)
mass energy
(physics) the mass of a body regarded relativistically as energy
mass energy
mass of a body considered as energy from the point of view of relativism (Physics)
mass-energy
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