Wien Approximation - Relation To Planck's Law

Relation To Planck's Law

The Wien approximation was originally proposed as a description of the complete spectrum of thermal radiation, although it failed to accurately describe long wavelength (low frequency) emission. However, it was soon superseded by Planck's law, developed by Max Planck. Unlike the Wien approximation, Planck's law accurately describes the complete spectrum of thermal radiation. Planck's law may be given as

The Wien approximation may be derived from Planck's law by assuming . When this is true, then

and so Planck's law approximately equals the Wien approximation at high frequencies.

Read more about this topic:  Wien Approximation

Famous quotes containing the words relation to, relation and/or law:

    Any relation to the land, the habit of tilling it, or mining it, or even hunting on it, generates the feeling of patriotism. He who keeps shop on it, or he who merely uses it as a support to his desk and ledger, or to his manufactory, values it less.
    Ralph Waldo Emerson (1803–1882)

    Concord is just as idiotic as ever in relation to the spirits and their knockings. Most people here believe in a spiritual world ... in spirits which the very bullfrogs in our meadows would blackball. Their evil genius is seeing how low it can degrade them. The hooting of owls, the croaking of frogs, is celestial wisdom in comparison.
    Henry David Thoreau (1817–1862)

    They are the lovers of law and order who observe the law when the government breaks it.
    Henry David Thoreau (1817–1862)