Introduction

Light, in the form of electromagnetic waves with different frequencies, is the main channel through which we receive information from the world around us. Through it, we observe the Universe, we communicate, and we discover the core of the physical world. It thus plays a crucial role in Science. The play of light on the surface of paintings or the contours of sculptures also creates and conveys the emotions of Art. This pre-eminence of light in all forms of perception has been recognized sinc..