i guess its the freq diff bet'n "rayleigh line" and "raman lines" ... but can anyone explain what the terms in quotes mean............?
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Raman frequencies refer to the specific vibrational frequencies of molecules that can be observed in Raman spectroscopy. These frequencies correspond to the energy differences between different vibrational states of a molecule. By measuring the Raman frequencies, scientists can gain insight into the chemical structure and bonding of a material.
Chandrasekhara Venkata Raman.
The Raman effect was discovered by Indian physicist Sir C. V. Raman in 1928. Raman was awarded the Nobel Prize in Physics in 1930 for this discovery.
In physics, Stokes lines and anti-Stokes lines are lines on a Raman spectrum that correspond to low and high energy shifts, respectively, due to inelastic scattering of light. Stokes lines occur at lower frequencies than the incident light, while anti-Stokes lines occur at higher frequencies than the incident light. These shifts provide information about the vibrational modes in a molecule.
C V Raman is best known for his invention of the Raman effect, which demonstrated the scattering of light by molecules. This discovery established the field of Raman spectroscopy, which is widely used in various scientific fields.
Water does have Raman scattering, but it is relatively weaker compared to other materials due to its symmetric molecular structure and low Raman cross-section. This makes it more challenging to detect and study using Raman spectroscopy.