×

UPSC Courses

DNA banner

DAILY NEWS ANALYSIS

  • 01 March, 2021

  • 5 Min Read

Raman Effect- National Science Day

Raman Effect- National Science Day

National Science Day

  • National Science Day, which fell on February 28, commemorates a path-breaking discovery of Raman Effect.
  • Three more physicists from Calcutta, namely Jagadish Chandra Bose, Satyendra Nath Bose and Meghnad Saha, had by then made major contributions that were globally acclaimed.
  • It seems very thoughtful and rational that our National Science Day celebrates a discovery (Raman Effect) and not the birthday of its discoverer.

What is Raman Effect?

  • Raman effect, change in the wavelength of light that occurs when a light beam is deflected by molecules. When a beam of light traverses a dust-free, transparent sample of a chemical compound, a small fraction of the light emerges in directions other than that of the incident (incoming) beam.
  • Most of this scattered light is of unchanged wavelength. A small part, however, has wavelengths different from that of the incident light; its presence is a result of the Raman effect.

Fig 1. Raman Effect

Objective assessment

  • Two books in particular, Nobel Laureate C.V. Raman’s Work on Light Scattering and C.V. Raman’s Laboratory and Discovery of the Raman Effect analyse the process, essence and significance of his work.
  • India has progressed a great deal in about a century after the major advances made by the Bose(s), Saha and Raman.
  • Even though none so far, working in India, has personally scaled those heights, our achievements, on the whole, on the application of science and technology in fields such as atomic energy, space research, agriculture and biotechnology have been impressive.
  • Two recent developments, namely the National Education Policy 2020 (NEP) and the draft National Science, Technology and Innovation Policy 2020 (draft STIP), despite having limitations that characterise any government publication, underscore some of the pathways to scientific research.
  • The importance of languages has been highlighted in the NEP.
  • S.N. Bose and others had been advocating from the 1940s for the use of the mother languages for science teaching and popularisation.
  • Setting up of the National Research Foundation, to encourage and fund research and development activities.

Fostering research

  • The draft STIP has also mooted substantial ideas in order to promote research and innovation and develop ‘a robust system for evidence and stakeholder-driven STI planning … and policy research in India’.
  • The proposal for a Research Excellence Framework for higher educational institutions, once reconciled with the relevant provisions of the NEP, can make a qualitative difference.
  • Likewise, fostering science and technology-enabled entrepreneurship and mainstreaming grassroot innovation and traditional knowledge systems (validated by modern scientific methods of evaluation and assessment) are proposals worth pursuing.
  • The draft STIP and facilitate India transforming itself to a forward-looking, science-enabled and science-respecting nation.

Keep the flame burning

  • The celebration of National Science Day with the basic objective of spreading the message of science and its importance in improving the lives of people, must be taken forward in the days ahead and should spur a national reawakening instead of being just a ritual.
  • India has a long history of secular enquiry and free thoughts. From Aryabhata, Var?hamihira and Bh?skar?c?rya to the great scientists of modern India, the tradition of illuminating the world of science continues.
  • Illustrious women like Janaki Ammal (botanist), Asima Chatterjee (chemist), Bibha Chowdhuri (physicist) and Gagandeep Kang (medical scientist) have kept this flame burning.
  • Collectively, we have to take forward the legacy instead of wasting our time indulging in obscurantism, unscientific and unsubstantiated claims.
  • It is only then that the purpose of observing the Day will be fulfilled and the spirit of Raman’s unswerving dedication to science be honoured.

Source: TH


Formation Day

On 1st November, eight Indian states—Andhra Pradesh, Chhattisgarh, Haryana, Karnataka, Kerala, Madhya Pradesh, Punjab, and Tamil Nadu—along with five Union Territories—Andaman and Nicobar Islands, Chandigarh, Delhi, Lakshadweep, and Puducherry—celebrate their Formation Day. This date marks an important milestone in India

Turtle (Kachhua) Wildlife Sanctuary

The Turtle Wildlife Sanctuary, also known as the Kachhua Sanctuary, is located in the Varanasi district of Uttar Pradesh. It is recognised as India’s first freshwater turtle wildlife sanctuary, established to conserve endangered turtle species and support the ecological health of the Ganga River. Location and Extent The sanctuary co

Introduction of AI and Computational Thinking (CT) in

The Ministry of Education plans to introduce Artificial Intelligence (AI) and Computational Thinking (CT) from Class 3 onwards in the 2026–27 academic year. This initiative is part of the National Curriculum Framework for School Education (NCF-SE) 2023 and aligns with the National Education Policy (NEP) 2020. The aim is to prepare student

Sal Tree

Scientists from the Environment Department of Himachal Pradesh University (HPU) in Shimla have recently revealed that the Sal tree (Shorea robusta) is the most effective natural air purifier for combating rising pollution levels. Their findings highlight the tree’s superior capacity to trap dust, absorb gases, and cleanse the air compared

US Resumes Nuclear Weapon Testing

The President of the United States has ordered the resumption of nuclear weapon testing after a gap of 33 years, the last test being in 1992. This decision marks a significant shift in global nuclear policy and has far-reaching implications for geopolitics, the environment, and international security. Status of Global Nuclear Weapon Testing

DNA

03 Dec,2025

Toppers

Search By Date

Newsletter Subscription
SMS Alerts

Important Links

UPSC GS Mains Crash Course - RAW Prelims Answer Key 2024