de Broglie relation

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de Broglie relation

[də¦brȯ¦glē ri′lā·shən]
(quantum mechanics)
The relation in which the de Broglie wave associated with a free particle of matter, and the electromagnetic wave in a vacuum associated with a photon, has a wavelength equal to Planck's constant divided by the particle's momentum and a frequency equal to the particle's energy divided by Planck's constant. Also known as de Broglie equation.