From the 13th century in medieval Europe, English bishop Robert Grosseteste wrote on a wide array of scientific subject areas, and talked over light from 4 different perspectives: an epistemology of light, a metaphysics or cosmogony of light, an etiology or physics of light, and also a theology of light,[fifteen] https://freesoundeffects81356.liberty-blog.com/29993568/little-known-facts-about-free-radio