Christiaan Huygens (1629-1695) labored out a mathematical wave theory of light in 1678, and released it in his Treatise on light in 1690. He proposed that light was emitted in all directions as being a series of waves in a very medium known as the Luminiferous ether. As waves https://light-gauge-steel-villa09987.tblogz.com/how-light-gauge-steel-framing-can-save-you-time-stress-and-money-52207905