Conservation of mass-energy | physics | Britannica (original) (raw)

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principle of physical science

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  In principles of physical science: Conservation of mass-energy
  …but together they constitute a single conservation law, which may be expressed in two equivalent ways—conservation of mass, if to the total energy E is ascribed mass E/_c_2, or conservation of energy, if to each mass m is ascribed energy m _c_2. The delicate measurements by Eötvös and later workers (see…
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terminology

• In conservation of energy
  …has alternatively been named the conservation of mass-energy or the conservation of total energy.
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