A reverse problem is a method in which one tries to determine the causes of a phenomenon from experimental observations of its effects. The solution of the inverse problem usually involves an initial stage of modelling the phenomenon, known as a direct problem, which describes how the parameters of the model translate into observable effects experimentally. Then, on the basis of the measurements obtained on the real phenomenon, the approach will be to approximate at best the parameters that allow to report these measurements. This resolution can be done by numerical simulation or analytically.