Raman Effect

 

ramam effect

Raman scattering or the Raman effect is the inelastic scattering of a photon which creates or destroys an optical photon. When light is scattered from an atom or molecule, most photons are elastically scattered. Scattered photons have the same energy and the same wavelength of incident photons. But a fraction of light is scattered at different optical frequencies and usually less than that of the incident photons. In gases, Raman scattering occurs with a change in vibrational, rotational or electronic energy of the molecule.

Raman spectroscopy is now widely used to analyze a wide range of materials. These spectra can be used to identify a variety of materials from plastics to precious gemstones. It is non-destructive and by using a microscope, spectra can be recorded from very small samples. By using an attachment on a laser, a Raman microprobe can even analyze tiny areas directly on the surface of objects.


Information:
"Chandrasekhara Venkata Raman." Wikipedia, the free encyclopedia. 20 Dec. 2005 <Chandrasekhara Venkata Raman>.


Images:
"Chandrasekhara_Venkata_Raman.gif". {{PD-user|user}}

"Prop._Tabla.jpg". Uploaded to en by Pakrashi. Professional tabla from Pakrashi. (cur) 17:12, August 12, 2004. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License.

"Brosen_mrdunga.jpg". Image created by Brosen. Gdansk, Poland. Date: 2004. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License.

"Medalha do Premio Nobel". http://pt.wikipedia.org/wiki/Imagem:NobelPrizeMedal.jpg. {{PD-user|user}}

"bratna2.jpg". http://www.igmint.org/photo1.htm. New India Government Mint.

Researched by: Ayush P., Sanskriti School.
Background: Noa, Ein Ganim School

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