I N D I A
Celebrating the Raman Effect & India’s Scientific Spirit
Observed Every Year on 28th February
| 28 Feb
Date Observed |
1928
Year of the Raman Effect |
1986
First National Science Day |
1930
Nobel Prize Awarded |
Every year on the 28th February, India pauses to honour one of the most luminous moments in its scientific history, the discovery of the Raman Effect, and, through that celebration, to reaffirm its enduring commitment to science, inquiry, and the pursuit of knowledge. National Science Day is not merely a commemoration. It is a declaration: that a nation of ancient wisdom is also a nation of modern scientific ambition.
Across the length and breadth of India in universities and research institutes, in school halls and government auditoriums, in village science fairs and the gleaming corridors of the Indian Space Research Organisation, the day is marked by lectures, demonstrations, competitions, exhibitions, and public celebrations that bring the wonder of science to hundreds of millions of people. It is one of the most widely observed science festivals of any nation on Earth.
| “Science is the greatest gift of God to humankind. It is through science that we discover the laws of nature, conquer disease, and lift millions out of poverty. National Science Day reminds us that this is a pursuit we must never abandon.”
— Former President Dr. A.P.J. Abdul Kalam |
■ Part I: The Raman Effect — The Discovery That Changed Science
Sir C.V. Raman: A Genius Born of Curiosity
On the 28th February 1928, in the laboratories of the Indian Association for the Cultivation of Science in Calcutta, a forty-year-old physicist named Sir Chandrasekhara Venkata Raman made an observation that would earn him the Nobel Prize and inscribe his name permanently in the history of science. The discovery, known ever since as the Raman Effect, demonstrated that when light passes through a transparent medium, some of that light is scattered in a way that changes its wavelength. This phenomenon, now foundational to chemistry, physics, materials science, and medical diagnostics, was one of the great experimental revelations of the twentieth century.
Raman’s path to this discovery was itself remarkable. Born in 1888 in Trichinopoly (now Tiruchirappalli), Tamil Nadu, into a Brahmin family steeped in scholarship, he showed exceptional mathematical ability from childhood. He passed his matriculation examination at eleven years old and his Bachelor of Arts, graduating with honours in physics, at fifteen. At nineteen, while working as a civil servant in Calcutta, he was conducting original research in the spare rooms of the Indian Association for the Cultivation of Science, working evenings and weekends with borrowed equipment and an intensity of focus that bordered on the obsessive.
He was fascinated by the deepest questions of light and optics. Why was the Mediterranean Sea blue? Why did diamonds sparkle? What happened to light when it entered matter? These were not idle questions; they were the threads that, pulled with sufficient persistence, would unravel a new chapter in physics.
The Discovery: What Is the Raman Effect?
The Raman Effect describes the inelastic scattering of photons, that is, the scattering of light in which the scattered photons have a different energy (and therefore wavelength) from the incident photons. Most scattered light retains the same wavelength as the original beam (elastic, or Rayleigh scattering). But a small fraction of scattered light shifts to a different wavelength, either longer (Stokes scattering) or shorter (anti-Stokes scattering), because it has exchanged energy with the molecules of the medium through which it passed.
In practical terms, this means that by shining a beam of monochromatic light onto a substance and analysing the spectrum of the scattered light, one can determine the molecular composition of that substance with extraordinary precision. The ‘fingerprint’ of scattered wavelengths is unique to each molecule. It was a tool of identification and analysis that would, over the following decades, transform chemistry, biology, medicine, materials science, and forensic investigation.
The Raman Effect: Why It Matters Today |
| Raman spectroscopy, the analytical technique built directly on C.V. Raman’s discovery, is today one of the most widely used tools in science and industry. It is used to identify cancerous tissue during surgery, authenticate gemstones and artworks, analyse pharmaceutical drugs for purity, study the composition of planets from space probes, detect explosives at security checkpoints, and characterise nanomaterials in laboratories around the world. A discovery made in Calcutta in 1928 is now embedded in the daily practice of science on every continent. |
Nobel Glory: 1930
On 10th December 1930, C.V. Raman received the Nobel Prize in Physics in Stockholm, the first Asian person and the first non-white scientist to receive a Nobel Prize in any scientific discipline. The award came just two years after the discovery, an unusually short interval that reflected the scientific community’s rapid and unanimous recognition of its significance.
Raman’s Nobel acceptance was characterised by the same combination of intellectual precision and poetic feeling that had driven the discovery itself. He spoke not just of physics but of beauty, of the profound aesthetic pleasure that came from understanding why the sea was blue and the sky was not merely darkness. He was, in the deepest sense, a scientist who also felt what he discovered.
The reaction in India was extraordinary. Raman was feted as a national hero, showered with honours, and elevated to a symbol of what Indian intellect could achieve on the world stage. At a time when India was still under British colonial rule and struggling for independence, his Nobel Prize carried implications that went far beyond physics. It was proof, resonant and undeniable, that India belonged at the very highest table of human intellectual achievement.
| “I am proud to be an Indian. I am proud that India has produced a man who can stand as an equal among the greatest scientists of the world.”
— Rabindranath Tagore, on C.V. Raman’s Nobel Prize |
■ Part II: The Birth of National Science Day
From Discovery to National Celebration
National Science Day was established by the Government of India in 1986, following a proposal by the National Council for Science and Technology Communication (NCSTC). The date chosen, 28th February, is not arbitrary. It is the exact anniversary of the day in 1928 on which C.V. Raman announced the discovery that would bear his name. The first National Science Day was observed on 28th February 1987, and the tradition has continued without interruption ever since.
The NCSTC was founded with a mission to spread scientific awareness and a spirit of inquiry across India’s vast and diverse population, to make science not the exclusive property of urban universities and elite research institutions but a living, breathing part of national culture. National Science Day was conceived as the centrepiece of that mission: one day a year when all of India was invited to celebrate science, participate in its demonstrations, and feel the excitement of discovery.
The Annual Theme
Each year, National Science Day is observed under a specific theme chosen by the Department of Science and Technology, a theme intended to focus national attention on a particular dimension of scientific progress or challenge. Past themes have ranged from the deeply technical to the broadly humanistic, reflecting the breadth of science’s engagement with Indian society.
| 2024 Theme | Indigenous Technologies for Viksit Bharat (Developed India) |
| 2023 Theme | Global Science for Global Wellbeing |
| 2022 Theme | Integrated Approach in Science and Technology for a Sustainable Future |
| 2021 Theme | Future of STI: Impacts on Education, Skills and Work |
| 2020 Theme | Women in Science |
| 2019 Theme | Science for the People and the People for Science |
| 2018 Theme | Science and Technology for a Sustainable Future |
| 2017 Theme | Science and Technology for the Specially Abled Persons |
How the Day Is Observed
National Science Day is observed across India with a scale and variety that reflects the country’s federal structure and the depth of public enthusiasm for science. The central celebrations are organised by the Department of Science and Technology in New Delhi, typically featuring the announcement of national science awards, ministerial addresses, and landmark science exhibitions at institutions such as the National Science Centre.
Across India’s states, universities, research institutes, polytechnics, schools, and science clubs organise their own programmes. These range from lectures by distinguished scientists and public demonstrations of experiments, to science quizzes, essay competitions, model-making contests, and exhibitions of student inventions. The Indian Space Research Organisation (ISRO), the Defence Research and Development Organisation (DRDO), the Council of Scientific and Industrial Research (CSIR), and the Indian Institutes of Technology all typically host major public events.
In rural areas and smaller towns, science fairs and mobile science exhibitions, some travelling by specially equipped vans, bring demonstrations of basic science to communities where access to laboratories and universities is limited. The NCSTC specifically targets these outreach efforts at young people, women, and communities historically underrepresented in scientific education.
National Science Day Awards |
| The Government of India uses National Science Day as the occasion to present several of its most prestigious science honours. The National Science Popularisation Awards recognise individuals and organisations that have done outstanding work in communicating science to the general public. The Shanti Swarup Bhatnagar Prize, awarded by the Council of Scientific and Industrial Research, is one of India’s most coveted science awards, presented each year to scientists below the age of 45 who have made exceptional contributions to their fields. |
■ Part III: India’s Scientific Heritage
Ancient Foundations: Mathematics, Astronomy, and Medicine
National Science Day does not celebrate merely one discovery or one scientist. It celebrates a civilisation’s relationship with knowledge that stretches back more than three thousand years. India’s contributions to mathematics, astronomy, medicine, metallurgy, and linguistics represent one of the most sustained and sophisticated intellectual traditions in human history.
The decimal numeral system, the foundation of all modern mathematics and computing, was developed in India and transmitted to the Arab world, from which it reached Europe as ‘Arabic numerals’. The concept of zero as both a placeholder and an independent mathematical entity was formalised by the Indian mathematician Brahmagupta in the seventh century CE. The trigonometric sine function was invented by the astronomer Aryabhata, who also calculated the value of pi to four decimal places in the fifth century CE and proposed, more than a thousand years before Copernicus, that the Earth rotates on its own axis.
The ancient medical system of Ayurveda, codified in texts such as the Charaka Samhita and Sushruta Samhita (the latter describing surgical procedures that would not reappear in Western medicine for over a millennium), represents an early and sophisticated attempt to understand human physiology and disease. The Sushruta Samhita describes over 300 surgical procedures and more than 120 surgical instruments, including techniques for rhinoplasty (reconstructive nose surgery) that remained unknown to European surgeons until the eighteenth century.
The Modern Scientific Tradition
The emergence of modern Indian science in the nineteenth and twentieth centuries was closely tied to the struggle for independence and the assertion of Indian intellectual identity. Figures such as Jagadish Chandra Bose, who demonstrated the electrical nature of plant responses and invented early wireless communication devices before Marconi, and Srinivasa Ramanujan, the self-taught mathematician from Madras whose contributions to number theory, infinite series, and continued fractions astonished the mathematical establishment in Cambridge, established that Indian scientific genius was fully competitive at the global level.
After independence in 1947, India’s first Prime Minister Jawaharlal Nehru placed science and technology at the very heart of the nation-building project. His famous phrase, “Science alone can solve the problems of hunger and poverty”, set the tone for decades of government investment in scientific institutions. The Indian Institutes of Technology, the Indian Institutes of Science, the atomic energy programme under Homi J. Bhabha, and the space programme under Vikram Sarabhai were all products of this conviction that scientific capability was national destiny.
India’s Science Today: A Global Force
Contemporary India is a major force in global science. The Indian Space Research Organisation has achieved milestones, including the Mars Orbiter Mission (Mangalyaan) in 2014, which made India the first nation to reach Mars orbit on its first attempt, and the Chandrayaan-3 Moon landing in 2023, which placed India among only four nations to achieve a soft lunar landing, that have commanded international admiration and inspired a generation of young Indian scientists.
India produces more science and engineering graduates than any country except China, and its diaspora of scientists, engineers, doctors, and technologists has contributed enormously to research institutions around the world. In fields from genomics and vaccine development to artificial intelligence, space technology, and pharmaceutical manufacturing, India is a primary contributor to the global commons of scientific knowledge.
| 3rd
Global Science Output Rank |
1.4M+
Science Graduates Per Year |
7,000+
Research Institutions |
2023
Chandrayaan-3 Moon Landing |
■ Part IV: Legacy and the Spirit of the Day
C.V. Raman: A Legacy That Endures
Sir C.V. Raman continued working with extraordinary productivity long after his Nobel Prize. He founded the Raman Research Institute in Bangalore in 1948 and directed it until he died in 1970 at the age of eighty-two. His research interests in his later years ranged across the optics of diamonds, the colours of flowers, the physiology of human vision, and the acoustics of musical instruments. He never retired. He was working on papers the week he died.
His legacy in India is immense and multi-dimensional. He is celebrated not merely as a great scientist but as a great Indian, a man who demonstrated, at a moment of colonial subjugation, that Indian intellect was second to none in the world. His insistence on conducting research in India rather than emigrating to better-equipped foreign laboratories was a deliberate statement of belief in his country’s scientific future.
National Science Day and the Young Mind
Perhaps the most important function of National Science Day is the one least visible in official statistics: the role it plays in inspiring young people. For a twelve-year-old in a village school in Bihar or Rajasthan who has never visited a laboratory and who does not know a working scientist, the arrival of a science fair or a travelling exhibition on National Science Day can be the moment that opens a door that changes everything.
India’s scientific establishment is acutely aware of the talent that is lost when able young people, particularly girls, and young people from lower-caste and tribal communities, are diverted away from science by poverty, social expectation, or lack of access to quality education. National Science Day, in its outreach programmes and competitions, is one of the mechanisms through which the country tries to find those young minds and show them that science is for them too.
Science as National Identity
For modern India, science is not merely a tool of economic development, though it is powerful in that regard. It is also an expression of national identity and civilisational continuity. National Science Day represents the meeting point between India’s ancient traditions of rational inquiry and its modern aspirations as a technological superpower. It is the day when the nation says, simultaneously, ‘We have always been a people of knowledge, and we intend to remain one.’
The spirit of the day is captured, perhaps, in the life of its presiding genius: a scientist who worked in a poorly equipped laboratory in a colonial city with no government funding, driven entirely by curiosity and love of nature, and who produced a discovery so fundamental that it is still in active daily use across every scientific discipline on Earth, nearly a century later. C.V. Raman did not wait for conditions to be perfect. He simply looked at the light, and saw something nobody had seen before.
National Science Day: At a Glance
| Observed On | 28th February, every year |
| First Celebrated | 28th February 1987 |
| Established By | National Council for Science and Technology Communication (NCSTC) |
| Commemorates | The discovery of the Raman Effect, 28th February 1928 |
| Discoverer Honoured | Sir Chandrasekhara Venkata Raman (1888–1970) |
| Nobel Prize Year | 1930 — Physics (first Asian Nobel laureate in science) |
| Organised By | Dept. of Science and Technology, Government of India |
| Key Events | Science exhibitions, public lectures, student competitions, award ceremonies |
| Annual Feature | A new national theme selected each year by DST |
| Raman Research Institute | Founded by C.V. Raman in Bangalore, 1948; still active |
| “When you look at the history of India, you see that science and mathematics and astronomy and medicine are not foreign imports; they are the very marrow of this civilisation. National Science Day is the day we remember that.”
— Prof. C.N.R. Rao, Bharat Ratna, Jawaharlal Nehru Centre for Advanced Scientific Research |
National Science Day is, at its deepest level, a celebration of the human mind. It honours a moment in 1928 when one man’s curiosity about the colour of the sea led him to a laboratory in Calcutta and a discovery that reshaped physics. It celebrates a civilisation whose relationship with mathematics, astronomy, and medicine dates back to the ancient world, and whose modern scientific institutions are now among the very highest globally. And it looks forward, to the young researchers working late in institutes across a billion-person nation, to the schoolchildren participating in their first science fair, to the questions not yet asked and the discoveries not yet made.
On every 28th of February, India looks at the light, and wonders what it might yet reveal.
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