Christiaan Huygens (1629-1695) labored 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 directions being a series of waves in the medium known as the Luminiferous ether. As waves aren't influenced https://lightgaugesteelframing54331.arwebo.com/61248565/little-known-facts-about-light-gauge-steel-villa