Discovery Of The Raman Effect

Raman decided to focus on the Raman effect and detailed his observations from an experiment he ran with the simple equipment he had. The second major discovery of his student K. R. Ramanathan in the field of light scattering was a new type of radiation, a phenomenon of the same name, called the Raman effect. Sir Chandrasekhar Venkat Raman’s interest in the scattering of light by molecules, which eventually led to the discovery of the Raman effect, was aroused during his return voyage by sea to India in 1921, after his first trip abroad to England as Palit Professor at the University of Great Britain. Calcutta. During this period, Sir Chandrasekhara Venkata Raman not only pioneered work in various fields of physics, including the well-known propagation of light, but also founded a school of physics that attracted a group of dedicated and brilliant workers from all over India. . . .

In 1922, Sir C. W. Raman wrote the famous monograph “Molecular Diffraction of Light” and thus began the saga of a determined man who pursued his vision with never-before-seen stamina and perseverance, which eventually led to the discovery of the Raman effect. , and many other outstanding contributions. In 1922, C. V. Raman published his work “Molecular Diffraction of Light”, the first of a series of studies with his collaborators that eventually led to the discovery on February 28, 1928, of the radiation effect that bore his name. Raman scattering effect (“New Radiation”, Indian J.K.V. Raman received the Nobel Prize in Physics in 1930 for discovering the Raman scattering effect, in which light passing through a material is scattered and the wavelength of the scattered light is changed, because that this causes an energy state transition in the molecules of materials, the effect of Raman scattering, in which the light passing through the material is scattered, and the wavelength of the scattered light changes, since this causes an energy state transition in the molecules of materials S. V. Raman discovered the effect of Raman scattering, which occurs when light passing through a material is scattered and its wavelength is different from the wavelength of the incident light, the original light is due to its interaction with the molecules of the material.

In February 1928, Indian physicist K.V. Raman noticed that scattered light was polarized, which distinguished the new scattering effect from fluorescence. On February 28, 1928, they obtained a corrected scattering spectrum separated from the incident light. On February 28, 1928, Sir C.W. Raman examined the scattered light with a direct-viewing spectroscope and found that classical scattering and corrected scattering appear as separate regions in the spectrum with distinct dark areas in between, which clearly indicate that the scattering period change in wavelength. In his explanation of the new phenomenon, Raman showed that frequency shifts are characteristic of the molecules that make up the diffusion medium. It does not depend on the frequency of the incident light.

The creators of its beginnings were awarded the Nobel Prize in 1930 for the discovery of inelastic scattering processes. Let us now move on to the next topic, Raman spectroscopy, which was discovered in 1928 by the great Indian physicist Sir C.V. In 1930 Raman was awarded the Nobel Prize for his work on the propagation of light and for the discovery of the effect named after him by the great Indian physicist. In 1928, physicist K.V. Raman disappeared along with his partner Krishnan, who won the 1930 Nobel Prize in Physics for this work. In 1921, Indian physicist K.V. returned by boat from England. Considering why the sea is blue, Raman began a series of studies and in February 1928 discovered a new scattering effect, now called the Raman effect, which is very important in physics and chemistry.

At the time, scientists thought the Mediterranean Sea was blue because it reflected the color of the sky, but C. V. Raman found that water itself was responsible for scattering blue light more than other colors. Back in India, Raman studied the sky and ocean with prisms, miniature spectrometers and diffraction gratings, and said the Mediterranean scatters light. Subsequently, the scientist Sir C.W. Raman was able to show that the blue color of water is due to the scattering of sunlight by water molecules. Sir C. V. Raman, through a simple experiment he conducted on a boat, showed that the blue color in the depths of the ocean is due to molecular dispersion, not just reflections from the sky.

Sir Chandrasekhara Venkata Raman, Nobel Prize in Physics 1930, assisted by K. S. Krishnan, IACS, Kolkata, India Calcutta, India India, 28 February 1928 Diffuse has different colours depending on the properties of the material. Raman went on to describe the discovery that resulted from a seemingly simple experiment. His student K. R. Ramanathan invented a spectrometer for detecting and measuring electromagnetic waves.

K. W. Raman worked with liquids that were denser than gases and therefore more prone to exhibit these effects, and in 1928 he presented a paper first in the Indian Journal of Physics and then in Nature, a journal that has become synonymous with the publication of many revolutionary discoveries that led to the Nobel Prizes. Some discoveries of Raman scattering, such as the Raman effect (for which he was awarded the Nobel Prize), Raman-Nath theory, his research on Brillouin scattering, the soft mode process, etc., the discoveries of Raman scattering are so famous and exceptional. which tend to overshadow Sir C. W. Raman’s many other elegant and significant contributions to science.

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