During the 13th century in medieval Europe, English bishop Robert Grosseteste wrote on a variety of scientific subject areas, and mentioned light from four various perspectives: an epistemology of light, a metaphysics or cosmogony of light, an etiology or physics of light, and also a theology of light,[15] basing it https://cheap-prescription-glasse05825.laowaiblog.com/29210842/what-does-eye-glass-frames-mean