The spectroscopic analysis shows that the elements emit a set of characteristic wavelengths called atomic spectrum. Lighter elements have relatively simple spectra with a few characteristic spectral lines but for heavier atoms the spectra contain a large number of lines. Scattered radiations do contain faint radiations with frequencies greater as well as less than the incident frequency. This scattering effect is known as Raman Effect. According to big-bang theory the universe was dense; fire ball at the time of explosion. The luminous band of light scattering from horizon to horizon called...