Christiaan Huygens (1629-1695) labored out a mathematical wave idea of light in 1678, and printed it in his Treatise on light in 1690. He proposed that light was emitted in all directions for a number of waves inside a medium called the Luminiferous ether. As waves will not be https://gregoryfqyhp.tribunablog.com/not-known-details-about-light-steel-frame-houses-53387850