National Science Day is celebrated in India on 28 February each year to mark the discovery of the "Raman Effect" by Indian physicist Sir Chandrasekhara Venkata Raman on 28 February 1928.
28th February, 1928 was a great day for India when an invention in the field of Indian science was completed by the famous Indian physicist, Sir C.V. Raman. He was a Tamil Brahmin and first scientist from India who made such a breakthrough.
To commemorate and honor this event, the Indian Government designated it as National Science Day in the year 1986.
The above definitive stamp was issued in the year 2008 by India