Double tap to edit National Science Day is observed on the day Indian Physicist Chandrasekhara Venkata Raman discovered the Raman Effect. The Raman Effect is the phenomenon where light gets scattered when passed through a transparent material, leading to changes in wavelength and energy. In 1928, on February 28, CV Raman discovered the Raman Effect. He also received the Nobel Prize in Physics in 1930 due to his significant contribution in the field of Physics. Commemorating the discovery, National Science Day is observed on February 28 every year.