SURESH GARG, PhD (University of Delhi), is Professor of Physics at the School of Sciences, IGNOU, New Delhi. Earlier, he has been the Pro-Vice Chancellor of IGNOU. He was seconded by the Commonwealth Secretariat as Director, Centre for Learning and Teaching, National University of Lesotho, Roma, in Southern Africa. He worked at Hindu College, Delhi for about 12 years before joining IGNOU. He has published several research papers in national and international journals and guided many PhD students. With more than three decades of teaching experience in India and abroad, Professor Garg has co-authored many textbooks in physics.
C. K. GHOSH, PhD (University of Calcutta), is Director, National Centre for Innovations in Distance Education, IGNOU, New Delhi. He has held several important positions in the Student Support Services Division of IGNOU. He is also the Nodal Officer of the Integrated MSc-PhD Programme in Physics and Astrophysics under IGNOU—Indian Institute of Astrophysics Collaboration. He has published several research papers.
SANJAY GUPTA, PhD (University of Delhi), is Senior Lecturer in Physics at the School of Sciences, IGNOU, New Delhi. Earlier, he served as Assistant Director (Research) with the Association of Indian Universities, New Delhi, and as Research Associate in the Department of Physics and Astrophysics, University of Delhi. He has also been to the National Open University of Nigeria (NOUN) as Associate Professor at the School of Science and Technology. His research interest is in the area of Neutron Transport. He has published several research papers in national and international journals.