Raman effect

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Ra·man ef·fect

a change in frequency undergone by monochromatic light scattered in passage through a transparent substance the characteristics of which determine the amount of change, yielding a spectrum in which the incident wavelength band is flanked by small satellite bands of greater and lesser wavelengths.
[Chandraswkhara W. Raman]

Raman effect

The effect that occurs when a beam of incident light causes rotational and vibrational transitions in molecules, resulting in scattered light which exits at a different frequency than incoming light.


Sir Chandrasekhara Venkata, Indian physicist and Nobel laureate, 1888-1970.
Raman effect - a change in frequency undergone by monochromatic light scattered in passage through a transparent substance whose characteristics determine the amount of change. Synonym(s): Raman shift
Raman shift - Synonym(s): Raman effect
Raman spectrum - the characteristic array of light produced by the Raman effect.
References in periodicals archive ?
Thursday's Google doodle features a postage stamp like graphic with Sir CV Raman's head shot along with the diagram of the apparatus demonstrating the Raman effect. Raman was born in Thiruvanaikaval, Trichinopoly, on November 7, 1888.
The doodle displays CV Raman's full face behind the letter G and adjacent to it shows the Raman effect with light rays emitting from a source.
Although the Raman effect is well known to physicists it has not been involved in laser action.
The underlying principle of the Raman effect can be explained through quantum mechanics.
National Science Day is celebrated to honour our Nobel laureate Sir Chandrasekhara Venkata Raman for his invention of the Raman effect through his experiments on the scattering of light.
You will also learn that the bluish discoloration of the parietal layer of the tunica vaginalis is due to the Raman effect, another patriotic chestnut.
Raman effect was discovered almost one hundred years ago.
Detecting these rare photons is the challenge--and ultimately the payoff--for scientists seeking to harness the Raman effect for clinical applications.
According to Dr Castanon, the pounds 600,000 project exploits a natural phenomena called the Raman effect that affects light passing through a material.
Now, Dr Juan Diego Ania-Castauun and his colleagues have used a special process called the Raman effect to transform a long optical fibre into an ultra-long laser.
Gregoriou (Foundation of Research and Technology-Hellas, Greece) and Braiman (a physicist at Syracuse U., US) have asked their contributors--specialists in the use of the Raman effect for characterizing polymers and biological systems--to address selected areas of interest in applications of infrared and Raman techniques.