Christiaan Huygens (1629-1695) worked out a mathematical wave concept of light in 1678, and released it in his Treatise on light in 1690. He proposed that light was emitted in all directions being a number of waves in a medium called the Luminiferous ether. As waves will not be https://mariojsbks.blogunteer.com/37795093/little-known-facts-about-light-gauge-steel-villa