RAMAN EFFECT
RAMAN EFFECT Change in the wavelength of light that occurs when a light beam is detected by molecules Raman scattering or the Raman effect is the inelastic scattering of photons by matter, meaning that there is an exchange of energy and a change in the light's direction. Typically this effect involves vibrational energy being gained by a molecule as incident photons from a visible laser are shifted to lower energy. This is called normal Stokes Raman scattering. The effect is exploited by chemists and physicists to gain information about materials for a variety of purposes by performing various forms of Raman spectroscopy . Many other variants of Raman spectroscopy allow rotational energy to be ex...