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About Indian Scientist C.V Raman And Raman Effect

About Sir Chandrashekhara Venkata Raman  (Physicist)

(7 November 1888 - 21 November 1970)

He is mainly known for Raman Effect

He was an Indian physicist born in the state of Tamil Nadu. Belongs from Tamil Hindu parents. His father was Chandrashekhar Ramanathan lyer and was a lecturer in mathematics and physics. His mother was Parvathi Ammal.

Details Cards About C.V Raman

Source : Wikipedia
Sir Chandrashekhara Venkata Raman

Sir CV Raman.JPG
CV Raman in 1930.
Born7 November 1888
Thiruvanaikoil, Madras Presidency, British India
(Tamil Nadu, India)
Died21 November 1970 (aged 82)
Bangalore, Mysore State, India
NationalityIndian
Alma materPresidency College
University of Madras (B.A., M.Sc.)
Known forRaman effect
Spouse(s)Lokasundari Ammal (1907–1970)
AwardsMatteucci Medal (1928)
Knight Bachelor (1929)
Hughes Medal (1930)
Nobel Prize in Physics (1930)
Bharat Ratna (1954)
Lenin Peace Prize (1957)

Fellow of the Royal Society
Scientific career
FieldsPhysics
InstitutionsIndian Finance Department
University of Calcutta
Banaras Hindu University
Indian Association for the Cultivation of Science
Indian Institute of Science
Raman Research Institute
Doctoral studentsG. N. Ramachandran
Vikram Ambalal Sarabhai
Shivaramakrishnan Pancharatnam
Other notable studentsKariamanickam Srinivasa Krishnan
K. R. Ramanathan

Signature

He discovered that when light transverse transparent material, some of the deflected light changes wavelength and amplitude. This phenomenon, subsequently known as
Raman scattering. In the year 1954, the Indian government honoured him with India's highest civilian award, the Bharat ratna.
He carried out groundbreaking work in the field of light scattering, which earned him the 1930 Nobel prize of physics and was the first person in Asia to obtain said award for achievements in science.

Early life and education

Raman moved to the city of Visakhapatnam and studied at St Aloysius Anglo-Indian High School. Raman passed matriculation at age 11 and the FA examination with a scholarship at age 13.

In 1902 Raman joined presidency college in Madras where his father was a lecturer in mathematics and physics. In 1904 he obtainied a BA degree from the University of Madras, where he stood first and won the gold medal in physics. In 1907 he completed an MSc degree at the University of Madras with highest distinction.

Career

Discovery of Raman effect

At the Indian association for the cultivation of science (IACS) in Calcutta, where he became the honorary secretary. Raman referred to this period as the golden era of his career. In 1926 professor Raman established the Indian journal of physics as the first editor. The second volume of the journal published his famous article "A New Radiation", reporting the discovery of Raman Effect.

 
Raman scattering
Raman scattering

He did experiment on the scattering of light, he discovered the Raman effect and gave further proof of the quantum nature of light. The field of Raman spectroscopy came to be based on this phenomenon, and Ernest Rutherford referred to it in his presidential address to the Royal society in  1929.
He was conferred an knighthood, medals and honorary decorates by various universities. 1930 he win Nobel prize in physics for his work on the scattering of light and for the discovery of the Raman effect.

His later work

Raman also worked on the acoustics of musical instruments. He worked out the theory of transverse vibration of bowed strings, on the basis of superposition of velocities. He was also the first to investigate the harmonic nature of the sound of Indian drum such as tabla and the mirdangam. Raman and his student, nagendra nath provided the correct theoretical explanation for the acousto optic effectin a series of articles resulting in the celebrated Raman nath theory.

 Personal life 

Raman was married on 6 may 1907 to lokasundari ammal. They had two son, Chandrashekhar and radio astronomer radhakrishnan.
He developed an extensive personal collection of stones, minerals and material with interesting light scattering properties which we obtain from his world travel and as gift.


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