28 February: National Science Day

Date: February 29, 2016

Raman Effect wavelength Bharat Ratna Nobel Prize

National Science Day is celebrated all over India with enthusiasm on 28th February every year in order to commemorate the invention of the Raman Effect in India by the Indian physicist, Sir Chandrasekhara Venkata Raman on the same day in the year 1928.Chandrasekhara Venkata Raman was awarded and honored with the Nobel Prize in the Physics in the year 1930.

The day is commemorated to uphold the significance of scientific applications in our daily lives. Science and colleges throughout the country organize events and exhibitions that showcase their respective researches and discoveries in the field.


The theme for year 2016 is “Scientific Issues for Development of the Nation” that aims at raising public appreciation. 

The Raman Effect- The Raman effect is defined as "a change of wavelength exhibited by some of the radiation scattered in a medium." In other words, Raman discovered that when light passes through a transparent medium, some of the deflected light changes its wavelength. This phenomenon came to be known as Raman scattering, from which results the Raman effect.

 In 1954, Sir C V Raman was awarded the highest civilian honour, the Bharat Ratna.