Wien's Displacement Law


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Wien's displacement law

[′vēnz di′splās·mənt ‚lȯ]
(statistical mechanics)
A law for blackbody radiation which states that the wavelength at which the maximum amount of radiation occurs is a constant equal to approximately 2898 times the product of 1 micrometer and 1 kelvin. Also known as displacement law; Wien's radiation law.

Wien’s Displacement Law

 

a law that asserts that the length λmax of a wave that receives the most energy in an equilibrium spectrum is inversely proportional to the absolute temperature T of the radiating body: λmax T = b, where b is a constant equal to 0.2897 cnv°K. Wien’s displacement law indicates how the maximum in an energy distribution is displaced within the radiation spectrum of a blackbody in case of a change in temperature. The law was first derived by W. Wien in 1893 on the basis of thermodynamic observations.

References in periodicals archive ?
1997; Perry 1979), or by using Wien's displacement law (Marr and Wilkin 2012; Biermann et al.
To see in other spectral ranges, particularly the infrared (IR), we need to take advantage of Wien's displacement law, which formulates an inverse relationship between emitted peak wavelength and blackbody temperature.