Optical principle progressed in the mid-seventeenth century with treatises written by philosopher René Descartes, which spelled out several different optical phenomena which include reflection and refraction by assuming that light was emitted by objects which generated it.[26] This differed substantively from The traditional Greek emission idea. During the late 1660s https://communications-system19528.elbloglibre.com/29827341/not-known-factual-statements-about-optical-shop-near-me