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What invented CV Raman?

What invented CV Raman?

C.V. Raman was awarded the 1930 Nobel Prize in Physics for his discovery of the Raman effect, in which light that passes through a material is scattered and the wavelength of the scattered light is changed because it has caused an energy state transition in the material’s molecules.

When did CV Raman got Nobel Prize?


What is Raman effect and its importance?

The Raman Effect is the process of scattering of light particles by molecules of a medium. The scattering occurs due to a change in the wavelength of light as it enters the medium. The light particles then bounce with decreased or increased energy, and thus, frequency. When frequency shifts, so does wavelength.

Why we use Raman Spectroscopy?

Raman) is a spectroscopic technique typically used to determine vibrational modes of molecules, although rotational and other low-frequency modes of systems may also be observed. Raman spectroscopy is commonly used in chemistry to provide a structural fingerprint by which molecules can be identified.

Is ch4 Raman active?

Selection rule is being used to determined whether any given transition is forbidden, but I just can’t figure out how do we get the selection rule in the first place. Like, for example, in CH4 A1 , is Raman active but not IR active.

What is Compton effect in physics?

Compton effect, increase in wavelength of X-rays and other energetic electromagnetic radiations that have been elastically scattered by electrons; it is a principal way in which radiant energy is absorbed in matter.

What is the difference between Raman and Rayleigh scattering?

Rayleigh scattering is elastic while Raman is inelastic scattering. In Raman scattering photons interact with the molecule and changes the rotational,electron and vibrational energy of the molecule. In Rayleigh scattering for molecules scattering can be inelastic with change in rotational energy of molecule.

What is photoelectric effect and Compton effect?

The Compton effect is the name given by physicists to the collision between a photon and an electron. The photon bounces off a target electron and loses energy. These collisions referred as elastic compete with the photoelectric effect when gamma pass through matter. It contributes to their attenuation.

How does a photon interact with an electron?

Energy from photons or light particles can be absorbed or released by electrons. When an electron absorbs a photon, the energy can free the electron to move around, or the electron can release the energy as another photon. Solar panels work by absorbing energy from photons and freeing electrons to generate electricity.

What is the difference between a photon and an electron?

Electrons have a negative charge, which means only that they move away from other negatively charged matter (other electrons) and are drawn to positively charged matter (protons, often ones in the nuclei of atoms). Photons have neither negative nor positive charge. They are not matter and have no mass.