Wien's Displacement Law
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Wien's displacement law[′vēnz di′splās·mənt ‚lȯ]
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.