Raman spectroscopy

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Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)

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Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)

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African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

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Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

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Raman spectroscopy

physics

Learn about this topic in these articles:

major reference

In surface analysis: Raman spectroscopy
In Raman spectroscopy a beam of photons, usually with wavelengths in the visible region, from a pulsed laser impinges on a surface. The photons are scattered by molecules within the sample and give up energy corresponding to vibrational levels within the scattering molecule.…
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molecular spectroscopy

In spectroscopy: Raman spectroscopy
Raman spectroscopy is based on the absorption of photons of a specific frequency followed by scattering at a higher or lower frequency. The modification of the scattered photons results from the incident photons either gaining energy from or losing energy to the vibrational…
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