In 1928 an Indian Scientist Sir Chandrasekhara Venkata Raman discovered a phenomenon known as Raman Effect and for his remarkable discovery in 1930 he got Nobel Prize, which was the first Nobel Prize in India in the field of Science and to mark this discovery every year National Science Day is celebrated.
National
Science Day: Theme
The theme of National Science Day 2019 - "Science for the
People and the People for Science."
Sir Chandrasekhara Venkata Raman was a Tamil Brahman who had worked from 1907
to 1933 at the Indian Association for the Cultivation of Science,
Kolkata, West Bengal. Here, he had researched various topics of physics of
which one is the Raman Effect, which marked the greatest discovery in the field
of science in Indian History.
In 1986, the National
Council for Science and Technology Communication (NCSTC)asked the
Government of India to designate 28 February as National Science Day. The government
had accepted it and declared 28 February as National Science Day in 1986. The
first National Science Day was celebrated on February 28, 1987.
It is a phenomenon in which change in the wavelength of light
occurs when a beam of light is deflected by molecules. When a beam of light
travels from a dust free transparent sample of a chemical compound, then a
small fraction of the light emerges in the direction other than that of the
incident light. Most of the scattered light wavelength is unchanged and in
small part if the wavelength is different from that of incident light it is due
to Raman Effect.
Awards which were won
by CV Raman are: Fellow of the Royal Society (1924), Knight Bachelor (1929), Nobel
Prize in Physics (1930), Bharat Ratna (1954), Lenin Peace Prize (1957) and
Fellow of the Royal Society (1924).
