Sir venkata raman biography of martin

Science and Technology. Mains: Achievements of Indians in science and technology; indigenization of technology and developing new technology.

C. v. raman education

Chandrasekhara Venkata Raman, the son of a teacher who taught physics and mathematics, was raised in an academic environment from an early age. After earning his M. The first Asian to get the Nobel Prize in Physics and the first Bharat Ratna awardee, Sir CV Raman is best known for his advanced theory of the scattering of light - an inelastic theory of scattering.

Sir CV Raman and his student KS Krishnan found that the light, after passing through a transparent medium, changes its wavelength and energy during the scattering - the phenomenon is called the Raman Effect or Raman Scattering , which has various applications in spectroscopy. Rayleigh had already established the phenomenon of the scattering of light and had provided reasons for the blue colour of the sky.

But his work was based on the multi-wavelength light passing through the atmospheric gases that scatter the light of lower wavelengths. Raman established a more advanced theory of scattering. When light is scattered by a molecule, the oscillating electromagnetic field of a photon induces a polarisation of the molecular electron cloud, which leaves the molecule in a higher energy state after the energy of the photon is transferred to the molecule.

Although termed a very weak effect, as only one scattered particle out of a million undergoes the shift in wavelength, the Raman Effect has proved to be a significant achievement in physics due to its various applications.