Ranjan Roy Daniel

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Ranjan Roy Daniel
Born (1923-08-11)11 August 1923
Nagercoil, British India

27 March 2005(2005-03-27) (aged 81)

Nagercoil, Tamil Nadu, India
Occupation Director Chairman of Tata Institute of Fundamental Research
Spouse(s) Serena Padmini
Children 4

Ranjan Roy Daniel Nadar (also referred to as R. R. Daniel or Rajan Roy) (11 August 1923 – 27 March 2005) was an Indian Nagercoil born physicist who worked in the fields of cosmic rays and space physics,[1] and remained Director Chairman of Tata Institute of Fundamental Research.[2] He also served as an advisor to the prime minister of India, Indira Gandhi in 1976. He worked in the field of cosmic rays[3] with Homi Jehangir Bhabha for 23 years.

He was awarded the Padma Bhushan in 1992 by the Government of India, for his contributions to science and engineering.[4]

Early life and education[edit]

Daniel was born on 11 August 1923 in Nagercoil to M.A. Daniel Nadar and Theresa Chellammal Daniel. He was the third of five siblings. He received his early and secondary education at Scott Christian Higher Secondary School in his hometown, Nagercoil. After completing secondary school in 1939 from Scott Christian College, he went on to pursue a BSc in physics from Loyola College, Chennai, the University of Madras.[2] Under the influence of the Indian Nobel laureate Chandrasekhara Venkata Raman he was advised to pursue the next phase of his education at Banaras Hindu University, from which he received by MSc (Physics) degree in 1946.[2][5]


He joined Tata Institute of Fundamental Research (TIFR) in 1947 as a scientist.[6] From there he was sponsored by the Indian government to carry out research studies in the UK at the University of Bristol in 1951. He carried out research in the H. H. Wills Physics Laboratory, headed by the Nobel laureate C. F. Powell, using nuclear emulsions exposed to cosmic rays at high altitudes. He completed his PhD research under Donald Hill Perkins in April 1953.[2][5] He went on to TIFR throughout till his retirement in 1988

He was made a Fellow of the Indian National Science Academy (INSA) in 1975, and was awarded the Vainu Bappu Award in 1992.[1]

Personal life[edit]

He married Serena Padmini, second daughter of G.M. Samuel and Annammal Samuel, in 1948, and the couple had four children. After his retirement he settled in Nagercoil.[6] He died on 27 March 2005 after a prolonged illness.[2]


  1. ^ a b "Deceased Fellow:Rajan Roy Daniel". Indian National Science Academy. Retrieved 4 February 2013.
  2. ^ a b c d e Stephens, S. A. (10 October 2005), "Ranjan Roy Daniel (1923–2005)", Current Science, Vol. 89, No. 7, pp. 1277–1279, Indian Institute of Science, Bangalore IISC.
  3. ^ Daniel, Ranjan Roy (ed.) (1964). Proceedings: Modulation. International Union of Pure and Applied Physics. Cosmic Ray Commission, India. Dept. of Atomic Energy.
  4. ^ "Padma Awards Directory (1954–2009)" (PDF). Ministry of Home Affairs. Archived from the original (PDF) on 10 May 2013.
  5. ^ a b Ghosh, Swarna Kanti (February 2006). "Remembering Prof. R.R. Daniel". Sampark, Vol. 4 No. 1, pp. 9–10. Tata Institute of Fundamental Research.
  6. ^ a b Serena Padmini

External links[edit]