28th February: National Science Day- C.V. "Raman effect" day


Every one remember Sir C.V. Raman for his remarkable discovery in the field of Physics. Raman’s effect has proved to be a milestone in science. This day is celebrate not only to respect Sir C.V. Raman but also to promote Science in order to join more brains to this field for the invention of new technologies.

Today is 28th February, which is celebrated as national Science Day in India. 28th February, 1928, was the day when Sir C.V. Raman discovered Raman's Effect, which has led a new era of scientific applications in laboratories and Industrial sector. Raman Spectroscopy is the application which is incorporated in all leading scientific laboratories worldwide. In 1930, Sir C.V. Raman received the Nobel Prize for his great discovery. The National council for Science and Technology (NCSTC), in 1986, requested the Indian Government to declare 28th February as National Science Day officially. The very next year NCSTC also affirmed for the National Science Popularization awards for the eminent work done in scientific field. This esteem event is now popularly celebrated in every school, colleges and in every educational academy.

About the great physicist Sir C.V. Raman


Venkata Raman son of R. Chandrasekahan Iyer and Parvati Ammal was born at Thiruvanaikaval, near Tiruchirapalli, Madras Presidency on 7th November, 1888. His early studies were carried in St. Aloysius Anglo-Indian Highschool, Vizag, Andhra Pradesh. Raman was master in physics in his come of age, and that was quite predictable as his father was a lecturer of Mathematics and physics in Presidency college Madras. Raman won several gold medals and passed out his B.A. and M.A. levels with highest marks. He got married to Lokasundari Ammal in 1907. This great Nobel Laureate signed in Palit Professorship in Physics at Calcutta University in 1917. But Raman being a researcher kept in touch with the scientific experiments in laboratory and in 1928 he discovered Raman's effect. Although Raman was more interested in Acoustics (Sound) and also worked on acousto-optic effect along with one of his students which is also known as Raman-Nath theory. In 1934, he was appointed as assistant Director of Indian Institute of Science. In 1943, with the help of Dr. Krishnamurthy, Dr. C.V. Raman established a company named as CV chemical and manufacturing Co. Ltd. He founded the Raman Research Institute in Bangalore by 1948, the very next year of his appointment as National professor of Physics. He was awarded by several respectable honors such as Franklin medal, Bharat Ratna and Lenin peace Prize. On 21th November, 1970, at the age of 82 years, Sir C.V. Raman rested in peace.

What is Raman's Effect


The great discovery: Raman's effect can be described as, when the light passes through any transparent medium, then some of the portion which is deviated or turn aside transforms into wavelength. This aspect is known as Raman' scattering occurs due to Raman's effect. A very simple example is Rainbow that we see in the sky especially during rainy days. The discovery was extremely significant as it was an evidence of quantum nature of light. After few months of this discovery he decided to reveal his concept to the world and this concept was enormously and unanimously appreciated and accepted in scientific world. Sir C.V. Raman was very disappointed when he didn't receive the Nobel Prize in 1928 and next year. But in 1930, he was quite sure about his candidature for the Nobel Prize and this time he was not disappointed. A great honor for him and for our country too. Raman spectroscopy is based on this phenomenon only and applied everywhere in laboratories in preliminary analysis.

Earlier very few institutions were involved with Science Day but now people are very much aware with this event and it is celebrated enthusiastically even in schools in the village. They too are very much aware of the significance of this day. Actually a huge number of brains have migrated towards management and other educational programmes and hence science have been neglected. It was the same long before the independent India was born, science was neglected and arts and history was more in practice, this practice made India dependent on other countries for technologies and was among the undeveloped countries. Hence to overcome this, science was promoted in the form of National Science Day, so that more and more brains are attracted towards science and invent our own technology to get a scientific stand in the world. It worked and now India is self dependent. Today again science needs to be promoted so that more and more people add themselves to this mission. We should try to implement the real meaning of Science Day and create more Sir C.V. Raman.


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