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 as a series of waves within a medium known as the Luminiferous ether. As waves usually are https://lgs-house78765.ageeksblog.com/37481520/a-review-of-prefabricated-house