WHAT DOES EYE GLASS FRAMES MEAN?

While in the 13th century in medieval Europe, English bishop Robert Grosseteste wrote on a wide range of scientific subject areas, and talked over light from four various Views: an epistemology of light, a metaphysics or cosmogony of light, an etiology or physics of light, as well as a theology of light,[15] basing it over the will work of Aristotl