28 February : National Science Day | HimExam.Net

28 February : National Science Day

National Science Day: Raman effect and all you need to know about the man who discovered it

National science day is celebrated on every year on 28 February. National science day is celebrated as one of the main science festivals in India every year. National Science Day is celebrated in India on 28 February each year to mark the discovery of the Raman effect by Indian physicist Sir Chandrashekhara Venkata Raman on 28 February 1928. For his discovery, Sri C.V. Raman was awarded the Nobel Prize in Physics in 1930.

 The theme of the year 2017 was "Science and Technology for Specially Abled Persons"

Raman effect : Raman effect, change in the wavelength of light that occurs when a light beam is deflected by molecules. When a beam of light traverses a dust-free, transparent sample of a chemical compound, a small fraction of the light emerges in directions other than that of the incident (incoming) beam. Most of this scattered light is of unchanged wavelength. A small part, however, has wavelengths different from that of the incident light; its presence is a result of the Raman effect.

About  Sir Chandrashekhara Venkata Raman

Born : 7 November 1888 Thiruvanaikoil, Tiruchirappalli, Madras

Died : 21 November 1970 (aged 82) Bangalore, Karnataka

Nationality : Indian

Fields : Physics

Institutions : Indian Finance Department 
                       University of Calcutta
                       Indian Association for the Cultivation of Science
                       Indian Institute of Science
                       Central College, Bangalore University
                       Raman Research Institute

Alma mater : University of Madras

Doctoral students : G. N. Ramachandran
                                  Vikram Ambalal Sarabhai

Known for : Raman effect

Notable awards : Knight Bachelor (1929)
                              Nobel Prize in Physics (1930)
                              Bharat Ratna (1954)
                              Lenin Peace Prize (1957)

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Pankaj Dhatwalia

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