Christiaan Huygens (1629-1695) worked out a mathematical wave concept of light in 1678, and posted it in his Treatise on light in 1690. He proposed that light was emitted in all Instructions as being a series of waves in a very medium known as the Luminiferous ether. As waves https://damienhbsib.xzblogs.com/79348396/an-unbiased-view-of-light-gauge-steel-framing