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BIOGRAPHY

BIOGRAPHY. Sir C. V. Raman By Nimmi Ouseph. C.V.Raman The Nobel laureate in physics. Story begins in a village near Tiruchirapalli Born on 8 Nov.1888 Second child of R.Chandrasekhara Iyer & Parvathi Ammal Family moved to Vishakhapatnam when he was 4 years old.

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BIOGRAPHY

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  1. BIOGRAPHY Sir C. V. Raman By Nimmi Ouseph

  2. C.V.RamanThe Nobel laureate in physics

  3. Story begins in a village near Tiruchirapalli Born on 8 Nov.1888 Second child of R.Chandrasekhara Iyer & Parvathi Ammal Family moved to Vishakhapatnam when he was 4 years old. Childhood & Family details….

  4. About Raman’s father…. • Father was a lecturer in Mrs.A.V.Narasimha Rao College,Visakhapatanam. • He taught Physics, Mathematics & physical geography • Father was athletic man & took active interest in sports

  5. Raman – A great reader • Voracious reader • He felt the books were like old friends • He was mainly influenced by 3 books • Light of Asia by Edwin Arnold • The Elements of Euclid by Helmholtz • The Sensations of Tone by Helmholtz

  6. Raman’s primary education…. • Completed schooling by 11 years • Spent two years of studying in his father’s college.

  7. Raman’s education at Presidency college

  8. Encourage by teachers…. • Teachers suggested him to prepare for ICSexam. • ICSwas a prestigious exam in those days to Indian students. • He attended a medical examination before the qualifying exam • Unfortunately he was disqualified by Civil surgeon of Madrasas he was unfit to travel to England. • This was only exam he failed in his career • He felt grateful to the man who (Civil surgeon of Madras)disqualified him

  9. IACS…. • Raman spotted IACS(Indian Association for the Cultivation of Science) sign board and joined. • Performed the legendary experiments on light.

  10. Research begins…. • He was communicated with physicists around the world • His papers published in international journals • Gave lectures in Calcutta on his experiments • He was Introduced live demonstrations in Science.

  11. Raman @ waves and sound • He was fascinated by waves and sound, and seem to have carried in his mind the memory of reading Helmholtz’s book in his school days. • He was decisive to study musical instruments. • Explained the working of Ektara EKTARA

  12. Acoustics - Waves …..

  13. Raman’s Ektara…

  14. A Scientist thought on violin player… • Mechanical violin player did not resemble the instrument which we know • It had all the essential features of the violin • Stretched string-resonant box-the bow-stroke length by adjusting the mechanical wheel. • This was first mechanical violin for research • He brought all essential parts from a cycle shop to make mechanical violin.

  15. Research on acoustics continue….. • He continued his research on acoustics • Besides the violin, he studied the Veena, Tambura, Mridangam, Tabla and others… Veena Tambura Mridangam Tabla

  16. Raman @ around 1917…. • Got chance to move into a full-fledged career in physics around 1917 • Ashutosh Mookerjee(Vice – chancellor of Calcutta university) offered him as a Palit Professor of physics. • Raman had to give up his job and higher income • Problem he had to overcome • “A person who is applying must have foreign experience” • The rule was dismissed • Became an active member in university activities

  17. Raman with his scholars……

  18. University Congress at Oxford • In 1921 he was given honorary doctorate from Calcutta University • Went overseas for the first time • Visit to University Congress at Oxford • During his voyage back to India he spent hours watching the sea from the deck of his ship. • Struck by its colour

  19. Raman’s discovery…. • Water molecule could scatter light just like air molecules • His thought was a radical in those days. • In 1922 he wrote a brilliant essay ‘The Molecular Diffraction of Light’ • He said light may exist in quanta, that is, as mass less particles of energy.

  20. K.R.Ramanathan finding the phenomenon in 1923 • Raman’s hunch • His direction towards finding evidence for the corpuscular theory of light. • Discovery of the Compton effect in 1923 • Raman’s hunch was proved right • K.R.Ramanathan spotted the phenomenon. • They named the phenomenon as ‘feeble fluorescence’.

  21. Raman @ Nobel • Raman effect took his team 4 more years • They were confident in 1927 • Discovery on 28th February…. • The famous Raman effect….the light can undergo a scattering through a liquid resulting in a change in its frequency…. • The date is celebrated as National Science Day • Booked tickets to Europe • He had to wait 2 years • Received Nobel Prize for Physics in 1930 • When he thought of India as a British colony he wept.

  22. Raman @IIS • Took up directorship of Indian Institute of Science@ Bangalore • He stayed there until he retired in 1948 • Equal time to research and organisational work • Nurtured many good students • Never had a temptation leaving the country for a better life…….

  23. Raman from 1946 to 1970….. • Devoted final years to set up of the Raman Research Institute in Bangalore….. • Running of the Indian Academy of Science. • Edited Current Science & proceedings of the Academy journals… • Died on 21 November,1970 • Funeral at the institute campus itself. • A solitary tree is located……

  24. THANK YOU 

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