C.V. Raman - Factbites

C.V. Raman - Factbites
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Topic: C.V. Raman

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	Raman spectroscopy - Wikipedia, the free encyclopedia
		Raman won the Nobel Prize in Physics in 1930 for this discovery, accomplished using filtered sunlight as a monochromatic source of photons, a colored filter as a monochromator, and a human eye as detector.
		Spontaneous Raman scattering is typically very weak, and as a result the main difficulty of Raman spectroscopy is separating the weak inelastically scattered light from the intense Rayleigh scattered laser light.
		Raman spectrometers typically use holographic diffraction gratings and multiple dispersion stages to achieve a high degree of laser rejection.
	en.wikipedia.org /wiki/Raman_spectroscopy (1162 words)

	Raman scattering - Wikipedia, the free encyclopedia
		The Raman effect corresponds, in perturbation theory, to the absorption and subsequent emission of a photon via an intermediate electron state, having a virtual energy level (see also: Feynman diagram).
		The Raman effect was first reported by C.V. Raman and K.S. Krishnan, and independently by Grigory Landsberg and Leonid Mandelstam in 1928.
		In contradistinction with the fluorescence effect, the Raman effect is therefore not a resonant effect.
	en.wikipedia.org /wiki/Raman_effect (1130 words)

	Raman spectroscopy - Wikipedia, the free encyclopedia
		Raman won the Nobel Prize in Physics in 1930 for this discovery, accomplished using filtered sunlight as a monochromatic source of photons, a colored filter as a monochromator, and a human eye as detector.
		Raman spectroscopy is a spectroscopic technique used in condensed matter physics and chemistry to study vibrational, rotational, and other low-frequency modes in a system.
		Spontaneous Raman scattering is typically very weak, and as a result the main difficulty of Raman spectroscopy is separating the weak inelastically scattered light from the intense Rayleigh scattered laser light.
	en.wikipedia.org /wiki/Raman_spectroscopy (928 words)

	Raman spectroscopy - Wikipedia, the free encyclopedia
		Raman won the Nobel Prize in Physics in 1930 for this discovery, accomplished using filtered sunlight as a monochromatic source of photons, a colored filter as a monochromator, and a human eye as detector.
		Spontaneous Raman scattering is typically very weak, and as a result the main difficulty of Raman spectroscopy is separating the weak inelastically scattered light from the intense Rayleigh scattered laser light.
		It relies on inelastic scattering, or Raman scattering of monochromatic light, usually from a laser in the visible, near infrared, or near ultraviolet range.
	en.wikipedia.org /wiki/Raman_spectroscopy (928 words)

	Raman spectroscopy - Wikipedia, the free encyclopedia
		Raman won the Nobel Prize in Physics in 1930 for this discovery, accomplished using filtered sunlight as a monochromatic source of photons, a colored filter as a monochromator, and a human eye as detector.
		Spontaneous Raman scattering is typically very weak, and as a result the main difficulty of Raman spectroscopy is separating the weak inelastically scattered light from the intense Rayleigh scattered laser light.
		Raman spectroscopy is a spectroscopic technique used in condensed matter physics and chemistry to study vibrational, rotational, and other low-frequency modes in a system.
	en.wikipedia.org /wiki/Raman_spectroscopy (928 words)

	Raman scattering - Wikipedia, the free encyclopedia
		The distortion of a molecule in an electric field, and therefore the vibrational Raman cross section, is determined by its polarizability.
		The Raman effect was first reported by C.V. Raman and K.S. Krishnan, and independently by Grigory Landsberg and Leonid Mandelstam in 1928.
		Raman scattering or the Raman effect is the inelastic scattering of a photon which creates or annihilates an optical phonon.
	en.wikipedia.org /wiki/Raman_scattering (1203 words)

	Raman Scattering
		Raman scattering produces scattered photons which differ in frequency from the radiation source which causes it, and the difference is related to vibrational and/or rotational properties of the molecules from which the scattering occurs.
		Raman discovered the inelastic scattering phenomenon which bears his name in 1928 and for it he was awarded the Nobel Prize for Physics in 1930.
		Since the Raman effect depends upon the polarizability of the molecule, it can be observed for molecules which have no net dipole moment and therefore produce no pure rotational spectrum.
	hyperphysics.phy-astr.gsu.edu /hbase/atmos/raman.html (594 words)

	Scattering: Tutte le informazioni su Scattering su Encyclopedia.it
		Lo scattering Raman (dal nome del suo scopritore C.V. Raman che nel 1928 lo osservò per primo) è un esempio di scattering anelastico, ovvero di un urto fra particelle dove l'energia cinetica complessiva del sistema non si conserva (l'energia totale del sistema si conserva in tutti i tipi di urti).
		Si definiscono fenomeni di scattering multiplo quei casi dove le particelle (o la luce) subiscono, all'interno del mezzo, un numero molto alto di eventi di scattering.
		Un parametro fondamentale per descrivere lo scattering multiplo è il cammino libero medio
	www.encyclopedia.it /s/sc/scattering.html (2728 words)

	Chandrasekhara Raman. Who is Chandrasekhara Raman? What is Chandrasekhara Raman? Where is Chandrasekhara Raman? Definition of Chandrasekhara Raman. Meaning of Chandrasekhara Raman.
		Raman won the 1930 Nobel Prize in Physics for his work on the scattering of light and for the discovery of the effect named after him.
		Raman was a professor of Physics at the Calcutta University for the next fifteen years.
		Raman spectroscopy is named after him for it uses this effect.
	www.knowledgerush.com /kr/encyclopedia/Chandrasekhara_Raman (2728 words)

	Raman, Chandrasekhara Venkata
		Raman's other research included the effects of sound waves on the scattering of light in 1935 and 1936, the vibration of atoms in crystals in the 1940s, the optics of gemstones, particularly diamonds, and of minerals in the 1950s, and the physiology of human colour vision in the 1960s.
		Indian physicist who in 1928 discovered what became known as the Raman effect: the scattering of monochromatic (single-wavelength) light when passed through a transparent substance.
		Raman showed 1921 that the blue colour of the sea is produced by the scattering of light by water molecules.
	www.cartage.org.lb /en/themes/Biographies/MainBiographies/R/Raman/1.html (2728 words)

	Raman scattering - Wikipedia, the free encyclopedia
		A Raman transition from one state to another, and therefore a Raman shift, can occur only when the polarisibility changes during the process under consideration (that is, during the vibration or rotation).
		The distortion of a molecule in an electric field, and therefore the vibrational Raman cross section, is determined by its polarisability.
		Raman scattering or the Raman effect is the inelastic scattering of a photon which creates or annihilates an optical phonon.
	en.wikipedia.org /wiki/Raman_effect (2728 words)

	Raman scattering - Wikipedia, the free encyclopedia
		The distortion of a molecule in an electric field, and therefore the vibrational Raman cross section, is determined by its polarizability.
		In 1922, Indian physicist Chandrasekhara Venkata Raman published his work on the "Molecular Diffraction of Light," the first of a series of investigations with his collaborators which ultimately led to his discovery of the radiation effect, on the 28th of February 1928 which bears his name.
		Raman scattering or the Raman effect is the inelastic scattering of a photon which creates or annihilates an optical phonon.
	en.wikipedia.org /wiki/Raman_scattering (1130 words)

	laser printer - Hutchinson encyclopedia article about laser printer
		Because they produce very high-quality print and are virtually silent, small laser printers (along with ink-jet printers) have replaced dot-matrix and daisywheel printers as the most popular type of microcomputer printer.
		Computer printer in which the image to be printed is formed by the action of a laser on a light-sensitive drum, then transferred to paper by means of an electrostatic charge.
		Laser printers range in size from small black-and-white machines designed to work with microcomputers to very large colour machines designed for high-volume commercial printing.
	encyclopedia.farlex.com /laser+printer (276 words)

	CHP - Raman Spectroscopy
		Raman spectroscopy is the measurement of the wavelength and intensity of inelastically scattered light from molecules.
		The Raman scattered light occurs at wavelengths that are shifted from the incident light by the energies of molecular vibrations.
		Because Raman scattering is a weak process, a key requirement to obtain Raman spectra is that the spectrometer provide a high rejection of scattered laser light.
	www.chem.vt.edu /chem-ed/spec/vib/raman.html (344 words)

	Chandrasekhara Venkata Raman - Wikipedia, the free encyclopedia
		Raman won the 1930 Nobel Prize in Physics for his work on the scattering of light and for the discovery of the Raman effect.
		Chandrasekhara Venkata Raman (சந்திரசேகர வேங்கட ராமன்) (November 7, 1888-November 21, 1970) was an Indian physicist, who was awarded the 1930 Nobel Prize in Physics for his work on the scattering of light and for the discovery of the effect named after him.
		Raman was a professor of Physics at the Calcutta University for the next fifteen years.
	www.wikipedia.org /wiki/Sir_Chandrasekhara_Venkata_Raman (344 words)

	Sir C.V. Raman,Legend,Sir C.V. Raman,Sir Chandrasekhara Venkata Roman was one of the greatest sci,Heros,Legends,by Manpreet,Freedom Fighter,Revolutionary,Leader,Politician,Top People
		1930: Nobel Prize in physics for his discovery of the Raman effect.
		Sir Chandrasekhara Venkata Roman was one of the greatest scientists of India and was awarded the Nobel Prize in 1930 for his outstanding discovery in Physics...
		Sir Chandrasekhara Venkata Roman was one of the greatest scientists of India and was awarded the Nobel Prize in 1930 for his outstanding discovery in Physics.
	www.4to40.com /legends/index.asp?article=legends_cvraman (344 words)

	Encyclopedia: Chandrasekhara Raman
		Chandrasekhara Venkata Raman (चन्द्रशेखर वेङ्कट रामन्) (November 7, 1888-November 21, 1970) was an Indian physicist.
		Raman won the 1930 Nobel Prize in Physics for his work on the scattering of light and for the discovery of the effect named after him.
		Being a strict teetotaller he responded,"Sir!You have seen the Raman effect on alcohol!
	www.nationmaster.com /encyclopedia/Chandrasekhara-Raman (344 words)

	Station Information - Chandrasekhara Venkata Raman
		Raman won the 1930 Nobel Prize in Physics for his work on the scattering of light and for the discovery of the effect named after him.
		Sir Chandrasekhara Venkata Raman (November 7, 1888-November 21, 1970) was an Indian physicist.
		Raman was a professor of Physics at the Calcutta University for the next fifteen years.
	www.stationinformation.com /encyclopedia/c/ch/chandrasekhara_venkata_raman.html (344 words)

	Raman Resource including Vibrational Spectroscopy
		Raman microspectroscopy was adopted for the study of black gloss coatings on Roman pottery found in Italy, dated second century B.C. This non-destructive technique allows a very accurate analysis of the crystalline and amorphous components of thin surface layers.
		The price of special essential oils that can be purchased on the market strongly depends on the quality of the product, and this can be ascertained by Raman spectroscopy.
		Raman Discussion Forum Posting: Using In Situ Raman for Determination of Degree of Crystalinity
	www.spectroscopyNOW.com /raman (344 words)

	Raman Spectroscopy
		For highly symmetric polyatomic molecules possessing a center of inversion (such as benzene) it is observed that bands that are active in the IR spectrum are not active in the Raman spectrum (and vice-versa).
		The effect was discovered by the Indian physicist, C. Raman in 1928.
		Raman Spectroscopy is based on the Raman effect, which is the inelastic scattering of photons by molecules.
	carbon.cudenver.edu /public/chemistry/classes/chem4538/raman.htm (2082 words)

	CHP - Raman Spectroscopy
		Raman spectroscopy is the measurement of the wavelength and intensity of inelastically scattered light from molecules.
		The Raman scattered light occurs at wavelengths that are shifted from the incident light by the energies of molecular vibrations.
		Because Raman scattering is a weak process, a key requirement to obtain Raman spectra is that the spectrometer provide a high rejection of scattered laser light.
	www.chem.vt.edu /chem-ed/spec/vib/raman.html (344 words)

	Raman Scattering
		Raman scattering produces scattered photons which differ in frequency from the radiation source which causes it, and the difference is related to vibrational and/or rotational properties of the molecules from which the scattering occurs.
		Raman discovered the inelastic scattering phenomenon which bears his name in 1928 and for it he was awarded the Nobel Prize for Physics in 1930.
		The sketch below is an idealized depiction of a Raman line produced by interaction of a photon with a diatomic molecule for which the rotational energy levels depend upon one moment of inertia.
	hyperphysics.phy-astr.gsu.edu /hbase/atmos/raman.html (594 words)

	Raman Spectroscopy Tutorial
		Raman scatter is partially polarized, even for molecules in a gas or liquid, where the individual molecules are randomly oriented.
		Resonance Raman spectroscopy is also a major probe of the chemistry of fullerenes, polydiacetylenes and other "exotic" molecules which strongly absorb in the visible.
		The difference in energy between the incident photon and the Raman scattered photon is equal to the energy of a vibration of the scattering molecule.
	www.kosi.com /raman/resources/tutorial (2108 words)

	Raman Spectroscopy
		The term "Raman scattering experimen" might well be shorthand for the determination of the selection rules for light-scattering from a sample, in the event that the incident and scattered light have different frequencies.
		Comparing the Raman tensor to the complete matrix element (which will be time-independent) shows that the Raman tensor must have a frequency equal to the negative of the Raman shift.
		Raman scattered light is frequency-shifted with respect to the excitation frequency, but the magnitude of the shift is independent of the excitation frequency.
	www.physics.nist.gov /Divisions/Div844/facilities/raman/Ramanhome.html (3333 words)

	CHP - Raman Spectroscopy
		Raman spectroscopy is the measurement of the wavelength and intensity of inelastically scattered light from molecules.
		The Raman scattered light occurs at wavelengths that are shifted from the incident light by the energies of molecular vibrations.
		Because Raman scattering is a weak process, a key requirement to obtain Raman spectra is that the spectrometer provide a high rejection of scattered laser light.
	www.chem.vt.edu /chem-ed/spec/vib/raman.html (344 words)

	FAQs
		The scattered radiation produced by the Raman effect contains information about the energies of molecular vibrations and rotations, and these depend on the particular atoms or ions that comprise the molecule, the chemical bonds connect them, the symmetry of their molecule structure, and the physico-chemical environment where they reside.
		A Raman photon is emitted if a molecule then undergoes a transition to a higher vibrational energy state than its original state (Stokes-Raman), or to a lower energy vibrational state (Anti-Stokes Raman).
		Energy levels and transitions related to the Raman effect: Laser- produced, monochromatic light of ultra- violet, visible, or infrared frequency can be used as the excitation source.
	epsc.wustl.edu /haskin-group/Raman/faqs.htm (574 words)

	MSN Encarta - Raman Effect
		Raman Effect, a change in frequency observed when light is scattered in a transparent material.
	encarta.msn.com /encyclopedia_761570702/Raman_Effect.html (77 words)

	lokpriya!
		Raman joined the Indian Finance Department in 1907; though the duties of his office took most of his time, Raman found opportunities for carrying on experimental research in the laboratory of the Indian Association for the Cultivation of Science at Calcutta.
		The fillip that Raman gave to India's recovery and upsurge of science is immeasurable.
		He is the man who placed India on World Map by discovering the Raman Effect.
	www.lokpriya.com /personalities/scientists/cvraman.html (281 words)

	Raman effect
		Raman scattering is perhaps most easily understandable if the incident light is considered as consisting of particles, or photons (with energy proportional to frequency), that strike the molecules of the sample.
		The pattern of the Raman lines is characteristic of the particular molecular species, and its intensity is proportional to the number of scattering molecules in the path of the light.
		The Raman effect is feeble; for a liquid compound the intensity of the affected light may be only 1/100,000 of that incident beam.
	www.britannica.com /nobel/micro/493_33.html (365 words)

	Lasting effect
		Raman spectroscopy is now applied in the study of thin films and coatings, micro-electronic integrated circuits, pigments in art works, and biological tissues and in the identification of narcotics and plastic explosives.
		X-ray Raman effect is used to study the molecular structure, viscosity and polymer lattice structure of chemical substances.
		Raman spectroscopy is preferred for reasons such as it is non-destructive of samples, it makes higher temperature studies possible and readily achieves the examining of low-wave-number regions.
	www.flonnet.com /fl2205/stories/20050311000908600.htm (2343 words)

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Topic: C.V. Raman

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