Last modified on 9th August 2000.
Encyclopædia Galactica
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Photon
A quantum of electromagnetic radiation. Electromagnetic radiation
shows both wave-like and particle-like properties, and a photon may
be considered to be a discrete wave packet. The energy, E,
carried by a photon is related to the
wavelength, [lambda], of its radiation by the formula
E = h*c/[lambda] = h*[nu], where h is
the Planck's constant, c is the
velocity of light, and [nu] is frequency.
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Created by
Rami T. F. Rekola