India celebrates National Science Day every February 28 to honor Sir C.V. Raman’s groundbreaking discovery of the Raman Effect in 1928. This phenomenon, which earned him the 1930 Nobel Prize in Physics, revolutionized our understanding of light scattering.
The Raman Effect occurs when light passes through a transparent medium like a gas, liquid, or solid. Molecules in the medium interact with the photons, causing subtle shifts in the light’s wavelength and energy. These shifts reveal vital information about the medium’s molecular structure.
Think of it like billiard balls colliding: incoming light scatters, gaining or losing energy from molecular vibrations. Shorter wavelengths mean higher energy (blue-shifted light), while longer ones indicate energy loss (red-shifted).
This discovery paved the way for Raman spectroscopy, a cornerstone technique in chemistry, biology, and materials science. From analyzing pharmaceuticals to detecting explosives, its applications span countless fields.
For 2026, the theme ‘Women in Science: Catalysts for Developed India’ spotlights female scientists’ contributions. Events across Delhi, West Bengal, and beyond feature lectures, demos, and interactive exhibits promoting STEM for all.
Raman’s work, done with modest lab equipment during India’s independence struggle, exemplifies ingenuity. Today, it powers advancements from cancer detection to planetary exploration. National Science Day reminds us: curiosity drives progress.