Many technical and scientific procedures help, for a long time, to determine the materials that are originally going to be used in art and in later works of conservation and restoration. In this scientist-artistic context, the technologies photons are demonstrating to be more viable definitive is in their application to the identification of materials. I, among other they emphasizes the Raman spectroscopy as much by their character of nondestructive method like by their great capacity of resolution, specificity i nonambiguedad. From October of 1992, in the Department of Theory of the signal and Communications of the UPC, a group of investigators and professors are working in the advantages and disadvantages like the applications of the Raman spectroscopy. One really treats, to investigate as this scientific methodology can help the world of the art.