From the thirteenth century in medieval Europe, English bishop Robert Grosseteste wrote on an array of scientific subject areas, and talked over light from four unique perspectives: an epistemology of light, a metaphysics or cosmogony of light, an etiology or physics of light, along with a theology of light,[15] basing https://erickyyywu.tkzblog.com/29774692/the-5-second-trick-for-speakers