The main focus of biophysics as a scientific field is to study biological systems using principles and techniques from physics. Biophysics combines molecular biology, biochemistry, and physics to understand the mechanisms underlying biological processes. It investigates topics such as protein folding, DNA structure, and cellular mechanics. By applying quantitative methods and physical models, biophysics aims to elucidate the complex interactions within living organisms and contribute to advancements in areas like medicine and biotechnology.