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The Energy of a Photon

Edexcel AS-level PhysicsQuantum PhysicsLesson 4 of 21

For electromagnetic radiation the energy of a photon is the frequency multiplied by the Planck constant h.

The Planck constant is h = 6.63 × 10-34 J s.

For radiation of frequency f, energy can only be transferred in whole packets (photons) of energy hf.

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