Christiaan Huygens (1629-1695) worked out a mathematical wave idea of light in 1678, and released it in his Treatise on light in 1690. He proposed that light was emitted in all directions like a series of waves in a very medium called the Luminiferous ether. As waves will not https://steelframevilla88765.uzblog.net/the-steel-frame-house-diaries-52496297