Raman Effect | Raman's Spectrum and Applications

In 1928, Sir C.V. Raman discovered experimentally, that the monochromatic light is scattered when it is allowed to pass through a substance. The scattered light contains some additional frequencies other than that of incident frequency. This is known as Raman effect.
This series of lines in the scattering of light by the atoms and molecules is known as Raman Spectrum. Applications of Raman Spectrum are also explained here.