Science

Dark Matter and Supernova by Sanila Kumary Pushpavally     The branch of optics that deals with the production emission and propagation of lights and its nature is called (Interference, diffraction, and polarisation) also known as physical optics. The light consists of a stream of particles called corpuscles and these give out by a light source such as (lamp, sun, and candle) and they travelled in a large distance with great velocity. The light moves in a finite speed was polarized and could modified by refraction and reflection. Each point of wave front may be regarded as a new source of waves. This is called electromagnetic theory of light. With the electromagnetic theory of light and the propagation of waves derives two constants called electricity and magnetism. Wi...