The initiation of biophysics in India is syiXHiymous with tlx? stalling of the Department of Crystallography and Biophysics at the University of Madras, in 1953, under the leadership of Professor G.N. Ramachandran. Even today, nearly half-century later, there are only a handful of Universities in the country which have full-fledged biophysics departments. However, most life science curricula in the country ix>w comprise a course in biophysics, owing to its increasing importance and relevance to the study of any biological system. This book has been written to fill a long-standing lacuna of textbooks in biophysics, suitable for students at the senior undergraduate and postgraduate level in various biological disciplines, such as biochemistry, molecular biology and even medicine.