National Science Day

It is an honor to the discovery of Indian scientist CV Raman…

On February 28, National Science Day is celebrated every year in India to honour the discovery of a phenomenon of the scattering of photons by Indian scientist Chandrasekhara Venkata Raman in 1928.

The discovery was later named as 'Raman Effect' after his name. Mr Raman was awarded the Nobel Prize for science in 1930 for his remarkable discovery.

On this day, schools, colleges, universities, and other academic, scientific, technical, medical, and research institutions organise quiz competitions, seminars, and other events.

According to the Ministry of Culture website, the Raman Effect is a phenomenon in spectroscopy, which is defined as the scattering of photons by excited molecules at higher energies.

In simple terms, it is the change in the wavelength of light that occurs when a light beam is deflected by molecules.

When a beam of light traverses a dust-free, transparent sample of a chemical compound, a small fraction of the light emerges in directions other than those of the incident beam.

Most of the scattered light is of an unchanged wavelength. A small part, however, has wavelengths different from those of the incident light; its presence is a result of the Raman Effect.

The National Council for Science and Technology Communication, in 1986, asked the Government of India to announce February 28 as National Science Day.

The government declared the day as National Science Day. The first National Science Day was celebrated on February 28, 1987.

Edited By: Arusha Farooq

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