28 February 1928Science & Technology (GS-3)2 min read

Discovery of the Raman Effect by Sir C.V. Raman: National Science Day

On 28 February 1928, Sir C.V. Raman announced the discovery of modified scattering of light in Calcutta at the Indian Association for the Cultivation of Science (IACS).

Historical Context & Background (GS-1)

Puzzled by the deep blue colour of the Mediterranean Sea during a voyage from Europe in 1921, Raman proved that water molecules themselves scattered sunlight independently of atmospheric reflections.

High-Yield Prelims Takeaways

1National Science Day (NSD)

National Science Day (NSD): Commemorated on 28 February since 1987 based on recommendation of NCSTC.

2Nobel Prize in Physics (1930)

Nobel Prize in Physics (1930): Sir Chandrasekhara Venkata Raman became the first Asian and non-white to receive a Nobel Prize in any science field.

UPSC Mains Analytical Perspective

UPSC Mains (GS Paper 3): Raman Spectroscopy is today an indispensable non-destructive analytical tool in nanotechnology, pharmaceutical QC, planetary exploration (Mars Perseverance Rover), and forensic analysis.

On This Day Practice MCQ

UPSC GS Paper 3

With reference to the historical significance of Discovery of the Raman Effect by Sir C.V. Raman: National Science Day, consider the core principles and facts associated with this event. Which statement correctly identifies its constitutional or strategic outcome?