Facts of National Science Day, 28 Feb 2023

As we know that science is being developed day by day, and development and technologies take the place. Science has reached so far that we did not even had imagined. Science has been one of the most important ways of progress and innovation throughout human history and its impact on the society. It has transformed the way we live now, work, and interact with the world around us. Throughout the history, scientists have made countless inventions and discoveries that paved the way for many inventions and advancements in the modern world. You can compare the way we live before without or having fewer technologies, and the way we live now surrounded by technology.

You know, every year India is celebrate National Science Day on 28th Feb to honor our great scientist Chandrasekhara Venkata Raman as C.V. Raman, who was an Indian scientist, and physician, for discovering the “Raman Effect. Every year, it is celebrated to honor the value of science and to serve as a reminder of the influence it has had on humankind’s way of life. National Science Day was started in 1986 by the government of India under then PM Rajiv Gandhi to commemorate the reminder and announcement of the discovery of the Raman Effect.

National Science Day

Let’s talk about the history of C.V Raman

Raman was born in a family of Sanskrit scholars in Trichy (now called Tiruchirappalli) in Madras in 1888. At the age of 16, he receives his BA degree from the well-known university Presidency college in Madras and was placed first in his class. But while studying for his master’s s degree in MA at the age of 18, he got published in the Philosophical Magazine, which means the first research paper ever published by Presidency college.

Every year, National Science Day is celebrated in India to remind the discovery of the Raman effect. What is the Raman effect exactly? The Raman effect is the phenomenon in which, when a stream of light passes through a liquid, then the light is scattered by the liquids in different colors. This happens due to the change in the wavelength of light that occurs when a light beam is deflected by the molecules present in the atmosphere.

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In simple terms, when light interacts with an object, there are three options, either it can be reflected, refracted, or transmitted. One of the things that scientists look at when the light is scattered if the particle it with it interacts is able to change its energy. The Raman effect is when the change in the energy of the light is affected by the vibrations of the molecules or materials under observation, leading to a change in its wavelength.

In the discovery, it titled, A new type of secondary radiation, CV Raman and co-author KS Krishnan mentioned all those 60 different types of liquids that had been studied for this discovery and showed the same result, a tiny fraction of scattered light had a different color than the incident light. Hence, CV Raman said, the phenomenon whose universal nature has to be recognized.

The importance of the discovery, CV Raman’s discovery took the world as it had deep implications far away from Raman’s original intentions. As Raman himself remarked in his 1930 Nobel Prize for this discovery and said in his speech, the character of the scattered radiations enables us to obtain an insight into the ultimate structure of the scattering substance. For the quantum theory or the quantum world, Raman’s discovery was very crucial.

The discovery also finds its way to use in chemistry, giving birth to a new field known as Raman spectroscopy as a basic analytical tool to conduct non-destructive chemical analysis for both organic and inorganic compounds. Hence, because of the contribution of these discoveries, Raman sir got the Novel Prize and we celebrate National Science Day every year.

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