Wien's law or Wien law may refer to:
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Wien approximation
Wien's approximation (also sometimes called Wien's law or the Wien distribution law) is a law of physics used to describe the spectrum of thermal radiation (frequently called the blackbody function). This law was first derived by Wilhelm Wien in ...
, an equation used to describe the short-wavelength (high frequency) spectrum of thermal radiation
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Wien's displacement law
Wien's displacement law states that the black-body radiation curve for different temperatures will peak at different wavelengths that are inversely proportional to the temperature. The shift of that peak is a direct consequence of the Planck r ...
, an equation that describes the relationship between the temperature of an object and the peak wavelength or frequency of the emitted light
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