Christiaan Huygens (1629-1695) labored out a mathematical wave theory of light in 1678, and revealed it in his Treatise on light in 1690. He proposed that light was emitted in all Instructions as a number of waves inside a medium known as the Luminiferous ether. As waves are not https://steelframehouse99887.digitollblog.com/38818359/how-light-gauge-steel-framing-can-save-you-time-stress-and-money