πŸ”¬ Science in India

5,000 years of science in India

From Harappan bronze and planned drains to zero, the Kerala School, the Raman effect and missions to the Moon β€” one timeline of what was discovered, invented and built in India. Every milestone links to the source it comes from.

Milestones111
Fields13
Scientists and scholars21
Ancient and classical contributionsField by field, with a map and the ideas NCERT gives without a date β†’ Modern scientific breakthroughsDiscoveries, Nobel Prizes and the scientists NCERT profiles β†’ Space, nuclear and technology milestonesSatellites, reactors, supercomputers and railways, with official dates β†’

Fields of knowledge

Mathematics 19 milestones Standard weights β†’ Indian Statistical Institute founded Astronomy 11 milestones Shadow clocks and water clocks β†’ Hanle Dark Sky Reserve Medicine and life sciences 6 milestones The earliest dentistry β†’ Mid Day Meal Programme, built on nutrition science Language, writing and learning 7 milestones The Harappan script β†’ Indian Institute of Science founded Metals and materials 11 milestones Stone hand-axes at Attirampakkam β†’ Steel from Jamshedpur Engineering, water and towns 13 milestones Planned drainage β†’ Vande Bharat trains Farming and plants 7 milestones Farming begins at Mehrgarh β†’ The White Revolution (Operation Flood) Physics 5 milestones Electric light arrives β†’ Subrahmanyan Chandrasekhar shares the Nobel Prize Nuclear science 9 milestones India’s nuclear programme begins β†’ Nuclear tests at Pokhran Space 15 milestones INCOSPAR: India’s space research begins β†’ Chandrayaan-3 lands on the Moon Computing and communication 6 milestones The first printing press β†’ UPI: instant digital payments Chemistry 1 milestones P.C. Ray founds India’s first pharmaceutical company β†’ P.C. Ray founds India’s first pharmaceutical company Weather and the Earth 1 milestones India Meteorological Department set up β†’ India Meteorological Department set up

The timeline

Space, nuclear and technology

πŸš€ Space, nuclear and technology milestones β†’ Β· πŸ”¬ Modern scientific breakthroughs β†’
  1. late 1940s
    ☒ Nuclear science

    India’s nuclear programme begins

    Initiated under the guidance of Homi J. Bhabha, to generate atomic energy for peaceful purposes.

  2. 3 August 1954
    ☒ Nuclear science

    Department of Atomic Energy set up

    Set up under the direct charge of the Prime Minister by a Presidential Order.

  3. 4 August 1956
    ☒ Nuclear science

    Apsara, Asia’s first research reactor

    πŸ“ Trombay

    Apsara achieved criticality and was the first research reactor in Asia to do so.

  4. 1 March 1958
    ☒ Nuclear science

    Atomic Energy Commission set up

    An Atomic Energy Commission with full executive and financial powers was set up to plan and expand the atomic energy programme; it makes the policy of the Department of Atomic Energy.

  5. 10 July 1960
    ☒ Nuclear science

    The CIRUS research reactor

    πŸ“ Trombay

    A 40 MWth reactor built with Canada, used for neutron research, testing fuel and making radioisotopes for medicine, agriculture and industry; it trained the engineers of India’s heavy-water reactor programme and ran for 50 years.

  6. 28 October 1969
    ☒ Nuclear science

    Tarapur: India’s first nuclear power station

    πŸ“ Tarapur, Maharashtra

    Units 1 and 2 of the Tarapur Atomic Power Station, boiling-water reactors of 160 MWe each, began commercial operation β€” the first entries in NPCIL’s list of nuclear power plants.

  7. May 1974
    ☒ Nuclear science

    India’s first nuclear test

    πŸ“ Pokhran

    The first nuclear explosion undertaken by India.

  8. October 1985
    ☒ Nuclear science

    Fast Breeder Test Reactor goes critical

    πŸ“ Kalpakkam

    With the 40 MWth FBTR at the Indira Gandhi Centre for Atomic Research, India entered the small club of countries with fast-breeder technology β€” the second stage of its three-stage nuclear programme. It runs on an indigenously developed uranium–plutonium carbide fuel.

  9. May 1998
    ☒ Nuclear science

    Nuclear tests at Pokhran

    πŸ“ Pokhran

    India conducted nuclear explosions at Pokhran.

Scientists and scholars

PaniniCharakaAryabhata 476–550Varahamihira 505–587Brahmagupta 598–668Al-Biruni 973–1050Bhaskaracharya (Bhaskara II) 1114–1185Jagadish Chandra Bose 1858–1937Prafulla Chandra Ray 1861–1944M. Visvesvaraya 1861–1962Srinivasa Ramanujan 1887–1920C. V. Raman 1888–1970Meghnad Saha 1893–1956Satyendra Nath Bose 1894–1974Homi J. Bhabha 1909–1966Vikram Sarabhai 1919–1971Verghese Kurien 1921–2012M. S. Swaminathan 1925–2023A. P. J. Abdul Kalam 1931–2015Rakesh Sharma 1949–Kalpana Chawla 1962–2003
πŸŽ“ In the syllabus

Mains Β· General Studies Paper III: β€œAchievements of Indians in science & technology; indigenization of technology and developing new technology.” UPSC β†—

✍ Practise science and technology Exam-style questions and flashcards made from the milestones above. ✍ Take the quiz πŸƒ Flashcards

How we check: science milestones are written from NCERT textbooks and official pages (NobelPrize.org, ISRO, DAE, BARC, IISc), and our build fails unless their key phrases are found in the source itself. The Tools & Technology milestones keep their own sources. Dates are as the source gives them; where it gives only a period, so do we. Claims we cannot find in such sources are left out β€” however often they are repeated elsewhere.