Wien displacement law is a law of physics that states that there is an inverse relationship between the wavelength of the peak of the emission of a black body and its temperature.
 λmax =  b/T

• λ = Peak Wavelength
• b = 0.028977 mK (Wien's constant)
• T = Temperature

Notes

Wien's displacement law can be interpreted as follows: the hotter an object is, the shorter the wavelength at which it will emit most of its radiation, and, further, that the wavelength for maximum or peak radiation power is found by dividing Wien's constant by the temperature in Kelvins.  This relationship can be seen in the graph.  The peak of each curve moves to the left (shorter `Lambda` as temperature goes up.