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The Raman effect was discovered by C.V. Raman in 1928. It involves the scattering of light by molecules, resulting in a change in wavelength. This discovery earned Raman the Nobel Prize in Physics in 1930 and revolutionized the field of spectroscopy.
Raman spectroscopy is a non-destructive analytical technique used to observe vibrational, rotational, and other low-frequency modes in a system. It relies on inelastic scattering of monochromatic light, usually from a laser. The technique provides information about molecular vibrations that can be used for sample identification and quantitation.
Raman spectroscopy has diverse applications across various fields, including materials science, chemistry, biology, and pharmaceuticals. It can be used for material identification, stress/strain measurements, contamination detection, and even in-vivo biological studies.
Raman scattering occurs when light interacts with the electron cloud of a molecule. It can be classified into Stokes and anti-Stokes scattering. The theory explains how the scattered light provides information about the vibrational modes of the molecule, which are characteristic of its structure and composition.
These resources provide a comprehensive overview of Raman spectroscopy, from its historical discovery to its theoretical foundations and practical applications in modern science and technology.