Energy-momentum relation

Gives the total energy of a particle in terms of its momentum and rest mass in special relativity. It reduces to the rest energy mc^2 when the momentum is zero and is used for particles moving at any speed.

E^2 = p^2 c^2 + m^2 c^4

What the symbols mean

total energy of the particle (J)
momentum of the particle (kg\,m/s)
rest (invariant) mass of the particle (kg)
speed of light in vacuum (m/s)

About this formula

  • FieldPhysics
  • TopicSpecial relativity
  • LevelUniversity
  • Also calledrelativistic energy-momentum relation, relativistic energy momentum equation, invariant mass energy relation, relativistic energy squared formula, mass-energy-momentum relation
  • SourceWikidata Q3502299

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