ON THE BIOLOGIC EFFICACY OF THE ULTRAVIOLET RADIATIONS

Stefan Herovanu and Valeria Winter

Abstract


Considering that the human body behaves like an optic filter, the authors present a complete physico-mathematical study of this filter.
As a direct application, the exposure of human body to the ultraviolet radiations in order to obtain some determined biological effects is considered. The case of a constant source of ultraviolet radiations is studied at first, followed by the case of a complex and variable source formed by the sun radiation together with the diffuse radiation of the celestial vault.