Christiaan Huygens (1629-1695) labored out a mathematical wave concept of light in 1678, and printed it in his Treatise on light in 1690. He proposed that light was emitted in all Instructions like a number of waves in a medium called the Luminiferous ether. As waves aren't influenced by https://lightsteelvilla77765.fare-blog.com/39266683/not-known-facts-about-expandable-house