Sir Chandrasekhara Venkata

Raman (7 November 1888

- 21 November 1970) was

an n Indian physicist born in

Tiruchirappalli.

out ground-breaking work in

the field of light scattering,

which earned him the

1930 Nobel Prize for Physics. He

discovered that when light traverses a

transparent material, some of the def

lected light changes wavelength. This

phenomenon, subsequently known

as Raman scattering, results from the

Raman effect and to commemorate it,

February-28 is celebrated as National

Science Day. In 1954, India honoured him

with its híghest civilian award, the Bharat

Ratna.