28 February: National Science Day

“Science is the acquisition and application of knowledge and understanding of the natural and social world by following a systematic approach based on evidence. It is a systematic, practical and logical approach to discover new things in the universe.”

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Do you know who was the Indian scientist sir Chandrashekharana Venkata Raman? Do you know who has invented the scattering of photons? Do you know when we do we celebrate Nation Science Day? Here I will let you know all about these things.

National Science Day

I hope you all might be aware of the “National Science Day” which is celebrated on 28th February every year. Do you know why do we celebrate National Science Day? Have you heard about Indian Scientist Chandrashekharana Venkata Raman?

Chandrashekharana Venkata Raman was awarded the noble prize in physics for its discovery in 1930. He invented the phenomenon of scattering of photons that was later known as the “Raman Effect” after his name. CV Raman invented the Raman effect in 1928, and he got a noble prize after two years of the invention. This invention was remarkable and this was the first novel prize in the field of science. Every year this day is celebrated in honour of physicist C.V Raman who discovered the Raman Effect. National Science Day is celebrated each year.

When Was The Day National Science Day Declared?

In 1986, the National Council for Science and Technology Communication(NCSTC) convinced the government of India to designate 28th February as National Science Day. On 28th February 1987 first National Science Day is celebrated.

National Science day is marked to raise awareness of the knowledge, invention and importance of science in human’s life. The main objective of this day is to increase awareness about achievement, projects and activities in the field of science and technology.

Who Was C.V Raman?

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Nobel Laureate and honorary member C. V Raman were born in 1988. He was born in South India. C.V Raman took a post of civil service in the finance department in Kolkatta in 1907. He did his scientific work in his spare time. C.V Raman published some research papers in Nature Philosophical Magazine and Physics Review. This research paper has made him familiar with outside India.

In 1918 Raman published his experiment on the molecular diffraction of light, which led to the discovery of the Raman Effect in 1928. C.V Raman discovered when a beam of monochromatic light is passed through a transparent medium, the spread light has weak components of varying frequency, such as the displacement nature of the scattered material and this experiment was named Raman Effect later.

What Was The Raman Effect?

In 1921 C.V Raman went to Europe and he noticed the striking blue colour of some icebergs. Raman got worried about the reason behind this phenomenon. He performed an experiment with transparent blocks of ice and light from a mercury arc lamp. He recorded the spectra from a scattering of light through ice and discovered lines known as Raman lines due to Raman Effect.

The Raman Effect is the process of scattering light particles through medium molecules. Dispersion is caused by changes in the wavelength of light as it enters the medium. Light contains particles called photons, whose energy depends on the frequency with which they travel. When they hit molecules at high speed in a medium, they rotate and scatter in different directions depending on the angle at which they collide with the molecules.

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Conclusion: It is very necessary to increase awareness and interest in science to students. National Science Day is the best program to increase awareness and interest through the different types of programs on this day. Students will take participate in this program and will enhance their knowledge and will be aware of the great scientist and their contributions.

References: www.optica.org