Introduction of Wien displacement determination
Wien displacement law, Wien displacement law, one of the basic laws of thermal radiation. At a certain temperature, the product of the temperature of the absolute black body and the wavelength λ corresponding to the maximum value of the radiation power is a constant, that is, λ (m) T = b (see picture) (microns). The above conclusion is called Wien's displacement law. In the formula, b = 0.002897m · K is called Wien constant. It shows that when the temperature of the absolute black body rises, the maximum value of the radiation power moves towards the short wave direction. Wien's displacement law is not only consistent with the short-wave part of the experimental curve of black body radiation, but also accords with the entire energy spectrum of black body radiation. It is the maximum exploration of the problem of black body radiation by classical physics.