An Indian-American professor at the University of Texas, Austin, has won the prestigious Dirac Medal for his contribution to the understanding of theoretical physics. He is the first Indian to grab the honour.Seventy eight-year old Ennackal Chandy George Sudarshan shares the Dirac 2010 with Italian physicist Nicola Cabibbo.Sudarshan’s contributions to theoretical physics, include the discovery of the V-A theory of weak interactions, which opened the way to the full description of the unified electroweak theory. The Award carries a cash prize of 5,000 US dollars. Sudarshan originally from Pallam, Kotayam district, Kerala, has taught at the Tata Institute of Fundamental Research (TIFR), University of Rochester, Syracuse University and Harvard.He has been a professor at the university since 1969 and a Senior Professor at the Indian Institute of Science.He served as the Director of the Institute of Mathematical Sciences (IMSc), Chennai, for five years during the 1980s.