Student Education Repository (மாணவர்கள் கல்விக் களஞ்சியம்): Today is National Science Day - Asia's first Tamil Nadu (Trichy) Nobel Laureate Sir C.V. Raman announced the Raman Effect to the world today (February 28, 1928).

Sunday, February 28, 2021

Today is National Science Day - Asia's first Tamil Nadu (Trichy) Nobel Laureate Sir C.V. Raman announced the Raman Effect to the world today (February 28, 1928).

Today is National Science Day - Asia's first Tamil Nadu (Trichy) Nobel Laureate Sir C.V. Raman announced the Raman Effect to the world today (February 28, 1928).

National Science Day is celebrated every year on February 28th. This day is observed in honour of Sir CV Raman. February 28 was the day he announced his discovery of the Raman Effect theory to the world. The Government of India has declared this day as National Science Day to commemorate the occasion and to make science accessible to the grassroots. The day was declared in 1986 by the National Science and Technology Exchange Committee. On this day, the National Award for Dissemination of Science is being presented to individuals and organizations that excel in the country for disseminating science. CV Raman was born on November 7, 1888, in Thiruvanaikaval, near Tiruchirappalli in Tamil Nadu, India. Father of Chandrasekara Venkatraman, Ira. Chandrasekhar Iyer is a teacher. Venkatraman completed his schooling there as his father worked as a physics lecturer in Visakhapatnam. He completed his BA degree in 1904 at the State College, Chennai with special merit.

Venkatraman continued his postgraduate studies at the same college. In January 1907 he obtained first-class marks in all subjects at the M A graduation examination. In February 1907 he wrote the Finance Examination and won first place. He started his career in June 1907 as the Chief Accountant of Calcutta. Along with his work, he has been conducting process (recipe) studies on scattering at the Indian Association for the Cultivation of Science, established by Dr Mahendralal Sarkar in Kolkata. He then joined the newly established Faculty of Polytechnic Physics at the University of Calcutta in 1917.

National Science Day in 2020 | National science day, Science, C v raman

Raman once sailed for a conference of scientists in Europe as a representative of the University of Calcutta. Then he was looking at the sky out of curiosity about nature. He wondered why the Mediterranean sky he saw was so blue. This question went deep into his mind. He discovered that the molecules in the water cause the sun to scatter and the sea to turn blue. Following this, his research team in Kolkata engaged in various researches and found measurements of scattering caused not only by liquids but also by solids. At the end of that research, the light-permeable medium could be solid, liquid or gaseous. He discovered the fact that ‘molecular scattering light’ is caused by changes like the light as it passes through those media.

Raman Effect by Prakash on Dribbble

On February 28, 1928, in the Indian Journal of Physics (Indian J. Physics), he published the results of his research with Srinivasa Krishna under the title A New Radiation. He received the Nobel Prize in 1930 for this outstanding study. He used a spectrograph during his research. By directing sunlight through various media, he noticed that some new ‘colour lines’ appeared on the spectrometer. They became known as the 'Raman lines' and his invention later became known as the 'Raman effect. CV In 1926, Raman founded and edited the scientific journal Indian Journal of Physics.

He started the Indian Academy of Sciences and later served as its President from the very beginning. He was also at the forefront of publishing its scientific currents. He also founded and served as the President of the Current Science Association in Bangalore, and founded a science laboratory called Current Science, which is renowned through the Academy. Nobel Laureate Sir CV Raman passed away on November 21, 1970, in Bangalore at the age of 82.

Raman's discovery was recognized by other world-renowned researchers. Raman later used laser light to confirm his photoelectric theory, and the spectrometer with the computer we will use later was invented and used for scientific research in physics, chemistry, microbiology, biochemistry, and pharmaceutical technology. New discoveries are made every day in the world. Why? For what? How? Is it the basis for scientific discoveries? It is because of this question that scientists have created various objects such as electricity, telephone, computer, aircraft, satellites, vehicles. Today we celebrate National Science Day because the journey and thought of a scientist made a great revolution.

Information: Ramesh, Assistant Professor of Physics, Nehru Memorial College, Puthanampatti.