Why is National Science Day celebrated?
National Science Day celebrates Sir CV Raman's big discovery, the Raman Effect. On 28th February 1928, CV Raman announced his discovery. He received the Nobel Prize for this discovery in 1930.
The Indian government made 28th February National Science Day in 1986. This day is also celebrated to honour the contribution of scientists to the country’s development.
Who was CV Raman?

CV Raman was born in 1888. He was a famous Indian physicist who helped advance science in India. He taught physics at the University of Calcutta. Later, in 1933, he became the head of the physics department at the Indian Institute of Science (IISc) in Bengaluru.
His most famous discovery, called the Raman effect, is used in different areas like chemistry, physics, biology, and medicine. This discovery helps detect bombs and drugs. It's also used to study and protect artworks, historical items, etc.
So, this important discovery of his is commemorated through National Science Day.
How is National Science Day celebrated?
On this day, many science activities are held across India. This day also aims to teach everyone more about science. Schools and colleges have special events about science and technology.
The theme for National Science Day 2024 is "Indigenous Technologies for Viksit Bharat." It's about using science, technology, and new ideas. It also recognises how Indian scientists help fix problems using local technologies, making life better for everyone. The theme also talks about making India self-reliant through science.