Planck–Einstein relation

Gives the energy of a quantum of electromagnetic radiation (a photon) from its frequency. It is used throughout quantum mechanics and photon physics.

E=h\nu

What the symbols mean

energy of the photon (joules, J)
Planck constant (approximately 6.626\times10^{-34}\,\mathrm{J\,s})
frequency of the radiation (hertz, Hz)

About this formula

  • FieldPhysics
  • TopicQuantum mechanics
  • LevelUniversity
  • Also calledPlanck relation, Planck energy-frequency relation, energy of a photon, photon energy formula, Planck-Einstein relation, photon energy from frequency
  • SourceWikidata Q12757333

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