the change in wavelength of light scattered while passing through a transparent medium, the collection of new wavelengths (Raman spectrum ) being characteristic of the scattering medium and differing from the fluorescent spectrum in being much less intense and in being unrelated to an absorption band of the medium.
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British Dictionary definitions for Raman effect
a change in wavelength of light that is scattered by electrons within a material. The effect is used in Raman spectroscopy for studying molecules
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for Raman effect
The alteration of the frequency and the phase of light as it passes through a transparent medium. The Raman effect is caused by small differences between the energy of photons absorbed by the molecules that make up the medium and the energy of photons re-emitted.
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