mass-energy equivalence

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mass-energy equivalence

physics

Also known as: mass-energy

Learn about this topic in these articles:

cosmology

In cosmology: Superunification and the Planck era
…of real pairs with positive mass-energy, a fact first demonstrated in the context of black holes by the English astrophysicist Stephen W. Hawking.
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mass

In mass
…object was seen to be equivalent to energy, to be interconvertible with energy, and to increase significantly at exceedingly high speeds near that of light (about 3 × 10⁸ metres per second, or 186,000 miles per second). The total energy of an object was understood to comprise its rest mass…
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matter

In matter
…mass) and energy can be converted into each other according to the famous equation E = mc², where E is energy, m is mass, and c is the speed of light. This transformation occurs, for instance, during nuclear fission, in which the nucleus of a heavy element such as uranium…
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