R. K. Srivastava, Ph.D., formerly Professor of Ranchi University, has teaching (both undergraduate and postgraduate) and research experience of 38 years. He did his doctoral dissertation on statistical mechanics of quantum fluids, and has published many research papers on Distribution Function of Bose Fluids and Liquid Helium.
J. ASHOK, Ph.D., Head of Department of Physics, Ranchi College, Ranchi University, has teaching experience of more than three decades. His doctoral dissertation was on Solid State Physics, and his research work focussed mainly on Crystal Structure Determination. He has also authored/coauthored several books.