Planck distribution notes

Planck distribution notes - which may be approximated as a...

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Important Features of the Planck Distribution
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1. Emitted radiation varies continuously with wavelength.
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2. At any λ, the magnitude of the emitted radiation increases with increasing temperature.
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3. The spectral region in which the radiation is concentrated depends on temperature, with comparatively more radiation appearing at shorter wavelengths as the temperature increases.
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4. A significant fraction of the radiation emitted by the sun,
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Unformatted text preview: which may be approximated as a BB at 5800 K, is in the visible portion of the spectrum. At T < 800 K, emission is primarily in the IR and not visible to the eye. A tungsten filament operates at about 2900 K. It emits white light, but most of the emission is in the IR. Wiens Displacement Law: max T = C3 where C3 = 2898 m K...
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Planck distribution notes - which may be approximated as a...

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