Recently a renewed emphasis on the benefits of proper use of natural light has focused attention on the need to define a new paradigm - to properly assess the variability of the amount light that can be used not only to enhance the presence of natural light as a instrument to outline expressively the indoor space, but also to reduce the demand for electricity and thermal energy consumption in buildings.This title deals with the many advantages associated to the use of natural light, comparing architectural experiences, technological devices and calculation methods. It explores the spatial...