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22-07-2024

From Raman to Kalam: Iconic Indian Scientists and Their Revolutionary Contributions 

Table of Content

Scientists who shaped India’s scientific roadmap

  1. Dr. Jagdish Chandra Bose
  2. Chandrashekar V Raman
  3. Homi Jehangir Bhabha
  4. P. J. Abdul Kalam
  5. Salim Khan
  6. Sir Mokshagundam Visvesvaraya
  7. Hargobind Khorana
  8. Vikram Sarabhai

Indian history is replete with instances of our work, achievements and genius in wide areas of science, be it physics, chemistry, astronomy, or biology. There is evidence of scientific innovations and inventions in our mythology and history. Over the past century, many Indian scientists and their inventions have shaped the country and the world. From the earliest instances of surgeries to shlokas that give accurate measures of distance from the sun, the inquiring mind of a scientist has always been at work in the Indian subcontinent. In this blog, we discuss some renowned individuals who are famous Indian scientists and their inventions.

Scientists Who Shaped India’s Scientific Roadmap

Many remarkable contributions to modern science have originated from India, highlighting the nation’s dedication to fostering innovation and pushing the boundaries of knowledge. Some of the noted Indian scientists who have shaped India’s scientific roadmap and are noted for their revolutionary contributions are.

Dr. Jagdish Chandra Bose

Dr JC Bose earned renown for inventing the Crescograph which records the million part of a millimetre of plant growth and orbital movement. Using this device he proved that plants have a circulatory system and that the living cells cause the upward movement of sap in plants. The radio invented by Guglielmo Marconi was built upon Bose’s invention, the wireless coherer.

Chandrashekar V Raman

CV Raman was the first Indian and Asian to win the Nobel Prize for Physics in 1930.  His notable work was the concept of Raman's Effect, which says that light scatters when it passes through a transparent substance. In his study of  broken light, he observed that "there were two spectral lines of very low strength (strength) parallel to the incident monochromatic light." With his hypothesis, he proved that any broken light was not monochromatic even though the incident light was monochromatic. In quantum theory, the Raman Effect proves light’s dual nature and it is made up of particles and waves. Raman spectroscopy is an essential technique in chemistry, biology, and materials science that allows scientists to scrutinise atomic and molecular arrangements in materials.

Homi Jehangir Bhabha


Dr Homi Bhabha is the “Father of Indian Nuclear Programme”. He was invited by Dr CV Raman to join the Indian Institute of Science, Bangalore as a reader where he soon became a Physics professor. His ambition was to build a research institute for new areas of Physics. With this goal, in 1948, he built India’s first atomic research centre which is named after him - the Bhabha Atomic Research Centre. He was also the brainchild behind the establishment of the Tata Institute of Fundamental Research (TIFR) in 1944.

A. P. J. Abdul Kalam

Dr. Kalam is the “Missile Man of India”. He has done pioneering work in aeronautics, missile technology, and space exploration. Under his leadership at DRDO, the nation’s space capabilities grew. He was the guiding force behind the launch of the Satellite Launch Vehicle (SLV-III) and the Rohini satellite. He worked on India’s ballistic missile development, the Agni and Prithvi missiles that fortified India’s defence capabilities.

Salim Khan

Salim Khan is a distinguished ornithologist who is called the “Birdman of India”. He is a big influence on avian research and biodiversity conservation in India and abroad. His research work helped us understand the avian ecosystem and contributed to global bird conservation initiatives.

Sir Mokshagundam Visvesvaraya

M Visvesvarya is renowned for his pioneering work in the field of engineering. He invented the Block System which revolutionised water management and agricultural productivity. He was the chief engineer in the construction of the Krishna Raja Sagara Dam in Mysore. He designed the flood protection system for Hyderabad city. His contribution to civil engineering and water management has inspired global sustainable agricultural practices.

Hargobind Khorana

Dr Hargobind Khorana is a leading name in the field of medicine. He won the Nobel prize for his contributions to the role of genes in protein synthesis which had a great impact on research in the field of genetics and biotechnology.

Vikram Sarabhai

Dr. Sarabhai founded the Indian Space Research Organisation (ISRO) in 1969 and laid the foundation for India’s space exploration. Under his aegis, India launched satellites such as Rohini, APPLE, and INSAT that revolutionised communication and meteorology.

There are many noted scientists from India in the IT sector, medical research, space research and more. They are highly accomplished modern scientists who work in India and abroad in premiere research institutes and continue to inspire individuals to pursue science and make their mark in the field.

quiz corner

1. Who invented the Crescograph, demonstrating that plants have a circulatory system?

2. Who was the first Indian and Asian to win the Nobel Prize for Physics?

3. Who is known as the "Father of Indian Nuclear Programme"?

4. Which scientist played a crucial role in the development of India's missile technology?

5. Who is known as the "Birdman of India"?

6. Who invented the Block System, which revolutionised water management in India?

7. Who won the Nobel Prize for his contributions to genetics and biotechnology?

8. Who founded the Indian Space Research Organisation (ISRO)?

9. Who was known for his pioneering work in aeronautics and missile technology?

10. Who was awarded the Bharat Ratna for his work in physics and space technology?

Frequently Asked Questions (FAQs)

Dr. Jagdish Chandra Bose invented the Crescograph, a device that records the minute growth and movements of plants. This invention demonstrated that plants have a circulatory system and living cells that cause the upward movement of sap.

The Raman Effect, discovered by Chandrashekar V Raman, explains how light scatters when it passes through a transparent substance. This effect is crucial in quantum theory as it demonstrates the dual nature of light, consisting of both particles and waves.

Dr. Homi Jehangir Bhabha is recognized as the "Father of the Indian Nuclear Programme." He established India's first atomic research centre, Bhabha Atomic Research Centre, and was instrumental in founding the Tata Institute of Fundamental Research (TIFR).

Dr. A. P. J. Abdul Kalam, known as the "Missile Man of India," made significant contributions in aeronautics, missile technology, and space exploration. He led the development of the Satellite Launch Vehicle (SLV-III) and the Agni and Prithvi ballistic missiles.

Salim Khan, a distinguished ornithologist, is known as the "Birdman of India." His research has greatly contributed to avian research and biodiversity conservation both in India and globally.

Sir Mokshagundam Visvesvaraya is renowned for his pioneering work in engineering, particularly in water management and agricultural productivity. He invented the Block System and was the chief engineer behind the Krishna Raja Sagara Dam and Hyderabad's flood protection system.

Dr. Hargobind Khorana won the Nobel Prize for his work on the role of genes in protein synthesis, which has had a profound impact on genetics and biotechnology research.

Dr. Vikram Sarabhai founded ISRO in 1969. He laid the foundation for India’s space exploration, leading to the launch of significant satellites such as Rohini, APPLE, and INSAT.

Dr. JC Bose invented the wireless coherer, which was an essential component in the development of radio technology, later built upon by Guglielmo Marconi.

CV Raman's discovery of the Raman Effect provided critical insights into the scattering of light, which is now a fundamental technique in fields like chemistry, biology, and materials science to study atomic and molecular structures.

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