The Wien's Displacement Law states that a black body having a wavelength (λmax) carrying the maximum energy is inversely proportional to the absolute temperature (T).
λmax * T = b
Where, λmax = Wavelength of maximum intensity in meters,
T = Temperature of the black body in kelvins,
b = Wien's displacement constant = 2.898 × 10^(-3) meter.kelvins
Image Credits : Hyperphysics
Wien's Displacement law equation is useful for the find the temperatures of hot radiant bodies such as stars and used for a finding of the temperature of any radiant object which is far above that of its surroundings.
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