Ashesh Prosad Mitra
Ashesh Prosad Mitra FNA, FASc, FRS (21 February 1927 – 3 September 2007) was a physicist who headed the National Physics Laboratory in Delhi, India and was the Director General of the Council of Scientific and Industrial Research (CSIR). He is primarily known for his work on environmental physics. Life. Mitra studied at the Bangabasi College, an affiliated college of the University of Calcutta. He completed his post graduation studies from the renowned Rajabazar Science College campus of same university. He was the director of the National Physical Laboratory (NPL) from 1982 to 1986 and the Director General  of the Council of Scientific and Industrial Research (CSIR) from 1986 to 1991. He died at New Delhi in September 2007. Research. Radio & Space Physics was his area of specialization. He performed major work in the field of earth's near-space environment, through group based and space techniques. He worked on cosmic radio noise for studying the upper atmosphere led to a series of discoveries in ionosphere, solar physics and cosmic rays. Personal life. Ashesh Prosad Mitra had two daughters with his wife, Sunanda, whom he married on 12 August 1956.