Question: how is c v raman?
Answer: Sir Chandrasekhara Venkata Raman (/ˈrɑːmən/; 7 November 1888 – 21 November 1970) was an Indian physicist who made groundbreaking works in the field of light scattering. ... Krishnan, he discovered that when light traverses a transparent material, some of the deflected light change wavelength and amplitude.