On February 28, the day when the CV Raman discovered the Raman effect in 1928 was celebrated as the National Science Day of India. In 1986, the National Committee on Communication of Science and Technology (NCSTC) proposed that February 28 be designated as National Science Day. The Indian government accepted the proposal and officially announced compliance in the same year. February 28, 1987 was the first National Science Day celebration in India.
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National Science Day 2025 Topic:
The theme of National Science Day 2025 is “Granting the global leadership of Indian youth in science and innovation in Viksit Bharat”. The theme is designed to inspire young people’s minds, recognize groundbreaking contributions, and emphasize scientific advances in India.
You are watching: Dr. C.V. Raman Inventions and Scientific Contributions; Check Complete List Here
Dr Chandrasekhara Venkata Raman (7 November 1888 to 21 November 1970), commonly known as CV Raman, was an Indian physicist known for his research on light scattering. He and his student KS Krishnan used a spectrometer and found that as light passes through transparent material, the components it scatters change wavelengths. This newly determined form of light scattering, originally called modified scattering, was later named Raman effect or Raman scattering. To recognize this groundbreaking discovery, Raman won the Nobel Prize in Physics in 1930, becoming the first Asian Nobel Prize in any scientific field and the first non-white winner. Now, in this article, we will explore his list of inventions and scientific contributions.
Resume Raman Invention and Science Contribution List
|
Year |
Discover/Contribution |
Detailed explanation |
|
1916– 1921 |
Acoustics of musical instruments |
In his early days of his research, Raman conducted extensive research on the acoustics of Indian instruments such as Tabla, Mridangam and Veena. He scientifically explained how these instruments produce harmonic colors, leading to advances in musical acoustics and sound engineering. |
|
1921 |
Why does the sea look blue |
While traveling on a boat in the Mediterranean, Raman used pocket spectroscopy to analyze the color of water. He refuted Lord Rayleigh’s early theory and proved that the blue color of the ocean is due to water molecules scattering sunlight rather than reflecting from the sky. His research is published in nature November 1921. |
|
1928 |
CV Raman and KS Krishnan observed that the Raman effect was a breakthrough discovery in physics on February 28, 1928. They found that as light passes through transparent materials, some of these materials scatter at wavelengths as the molecular energy changes. This phenomenon provides a crucial method to determine the chemical composition of a substance. Raman’s achievements were won by the Nobel Phare in 1930, making him the first Asian Nobel Prize winner in science. |
|
|
The 1930s |
Raman-Context Theory (acoustic effect) |
Raman collaborated with Nagendra Nath to develop the Raman-environmental theory that explains the interaction between light and ultrasound. This theory is widely used in sound modulators, which are used in laser technology and optical communication systems. |
|
1932 |
Photon spin and quantum mechanics |
See more : Why Is Africa Splitting Into Two Continents? Raman and Suri Bhagavantam experiments confirm that photons have intrinsic angular momentum (spin). This discovery provides crucial experimental evidence supporting the duality of quantum mechanics and light particles. |
|
1920s – 1930s |
Optics of colloidal and crystalline physics |
Raman has extensively studied the effects of sound waves and X-rays on crystal infrared vibration. His work presents an understanding of solid-state physics and materials science, especially in terms of crystal structure and optical properties. |
|
1940s |
Research on diamonds and iridescent materials |
Raman studied diamonds, opals, agate and pearls, explaining their color changes, light refractive properties, and molecular structure. His work on diamonds promotes geology and gemology through spectroscopic classification of natural and synthetic diamonds. |
The importance and impact of Raman discovery:
- Raman effect is applied to Raman spectroscopy, which helps analyze the chemical composition of drugs, forensics, spatial exploration and cancer detection.
- His work on acoustics improves instrument design and acoustic applications.
- His discovery of crystal optics influenced modern materials science, quantum physics, and nanotechnology.
in conclusion
Resume Raman’s groundbreaking discoveries revolutionized the fields of physics, optics and materials science. His pioneering work in light scattering, acoustics and crystal physics laid the foundation for several modern scientific applications, including Raman spectroscopy, which is now an important tool for chemical analysis, medical diagnosis and space research.
His discovery of the Raman effect not only won him the Nobel Prize in Physics (1930), but also consolidated India’s position in the global scientific community. His extensive research on the optical properties of music acoustics, photon spins and materials continues to influence advances in quantum mechanics, laser technology, and optical communications.
In honor of his legacy, February 28 was celebrated as India’s National Science Day, inspiring future generations to pursue scientific excellence in their pursuit of excellence. The theme of NSD 2025 is “Granting global leadership to Indian youth in science and innovation in Viksit Bharat”, which reflects Raman’s vision to promote innovation and scientific growth. His contribution remains a beacon for inspiration for young scientists, strengthening India’s commitment to becoming a global leader in science and technology.
Source: https://dinhtienhoang.edu.vn
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