what is raman effect ?

Dr. Chandrasekhar Venkata Raman, while traveling from England by sea to India, observed the blue color of sea water as well as the snow on Alpine mountains. Initially it was believed that this effect was caused by the transformation of light, but Raman researched it and theorized that the effect was caused by the radiation of light 28 February 1928. His student KS Krishnan also played an important role in Mandalay.

According to Raman, when light rays or photons particles encounter atoms or molecules in the atmosphere, the energy contained in the radiated photons particles i.e. their wavelength and frequency is not equal to the wavelength and frequency of the original incident photons/light rays i.e. the wavelength of the light/photons after radiation is And the frequency is changed.
This is called the Raman effect due to the non-existent collision or association of photons and particles in the medium.

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