: The German physicist W. J. Wein (pronounced Wein of the German word Wien ) applied the theory of thermodynamics in 1896 and provided two formulas for the distribution of energy for different wavelengths in the spectrum of black matter. The names of these two formulas are Veen's Saran Sutra and Panchghat Sutra respectively. The formula is: The wavelength for the maximum energy radiation from a black object is disproportionate to the absolute temperature of the black object.