#👩‍🔬 தேசிய அறிவியல் தினம் 👩‍🎓 நல்விடியல்.. 28 February – National Science Day National Science Day is celebrated every year in India on 28 February to mark the discovery of the Raman Effect by the Indian physicist Sir Chandrasekhara Venkata Raman. He discovered the Raman Effect on 28 February 1928 and for this discovery, he was honored with the Nobel Prize in Physics subject in 1930.