Daulat Singh Kothari (1906–1993) was an eminent Indian scientist and educationist.There is also a research centre named after him ,DS Kothari Research Centre ,Miranda House ,University of DelhiD. S. Kothari was born in Udaipur in Rajasthan on 6 July 1906. He had his early education at Udaipur and Indore and received a master's degree in physics from Allahabad University in 1928 under guidance of Meghnad Saha. For his PhD, Kothari worked at the Cavendish Laboratory, University of Cambridge under the supervision of Ernest Rutherford, to whom he was recommended by Meghnad Saha. Wikipedia