<P> 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 . </P>
<P> 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 . </P>
the national science day is observed every year on 28 february in honour of
the national science day is observed every year on 28 february in honour of
Sir Chandrashekhara Venkata Raman
Sir Chandrashekhara Venkata Raman