Un’espressione analitica per la costante di Wien

With the help of Planck’s formula for the black body radiation, it is possible to deduce Wien’s and Stefan-Boltzmann’s laws by means of the usual mathematical methods of secondary school. In particular, we can obtain an excellent approximation of Wien’s constant in terms of the physical constants h, c, k and of the Napier number, in just one step of the Newton’s tangents method, applied to the derivative of the Planck’s function.