NATIONAL SCIENCE DAY-CV Raman | Raman effect

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image of national science day describing some facts about CV raman

What is National Science Day?

28 February every year is observed as National Science Day in India as on this
day, world-renowned scientist CV Raman and his student, K.S. Krishnan
invented the “Raman Effect” in 1928.

Raman won the Nobel prize in Physics in 1930, for the historic invention. It was the first instance where a non-white person won a Nobel prize in the Sciences.

This day is celebrated to recognize the contributions of scientists towards the
development of the country.

What is ‘Raman effect’?

Raman Effect, also known as Raman Scattering, is a phenomenon in
spectroscopy discovered by the Indian physicist while working in the laboratory
of the Indian Association for the Cultivation of Science in Kolkata.

In this, the wavelength of the light scatters when the light is deflected on a particular
object.

This was a very important invention that paved the way for innumerable future
developments in the scientific world. National Science Day is a tribute to the
iconic physicist and a call to the Indian youth to follow the footsteps of the great
man.

Why is the ‘Raman Effect’ named after C.V. Raman?

In 1921, while on a trip to Europe, Raman noticed the blue color of some
icebergs and the Mediterranean Sea.

This striking phenomenon made him want to understand the reason behind it. While conducting experiments with transparent blocks of ice and the light of a mercury arc lamp, he recorded the change in the wavelength of light after shining the light through the ice cube.

This phenomenon later came to be known as the Raman Effect.

Although he was not the first person to observe the effect, Raman became the
first person to publish the observations of the effect in 1928.

It was first observed just one week before Raman by Russian physicists Leonid
Mandelstam and Grigory Landsberg. However, they did not publish their results
until months after Raman.

What is the theme of National Science Day 2021?

The theme for National Science Day 2021 celebration is “Future of Science,
Technology and Innovation (STI): Impacts on Education, Skills, and Work”.

The theme this year has been chosen to raise public appreciation of the
scientific issues involved and the impacts science has on education, skill, and
work.

What is the significance of National Science Day?

It is celebrated to raise awareness of the importance of
science in daily life.

Colleges and institutions across the country also celebrate this day by organizing public speeches, radio, TV, science movies, science exhibitions on themes and concepts, debates, quiz competitions, lectures, and science model exhibitions.

The purpose behind the day is to encourage the youth to develop an interest in
science and realize its importance.

Students across the nation demonstrate various science projects and innovations at numerous state and national competitions organized on this day. On this day, the government of India felicitates scientists who contributed greatly to the field of science.

BONUS: HISTORY OF THIS DAY:

The National Council for Science and Technology Communication (NCSTC),
in 1986, approached the Government of India to pronounce February 28 as
N.S.D.

The then Indian Government accepted the proposal and declared the day as National Science Day. The first National Science Day was celebrated on February 28, 1987.

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