Physics Research StarterPhysics is a field of science that is focused on the discovery of the natural laws of the universe through experimentation, measurement, and mathematical analysis. Along with biology, chemistry, environmental science, and astronomy, it is one of the five basic sciences. In one form or another, humans have actively pursued the study of physics since ancient times. Over the years, the field has evolved into a broad, complex science with an array of distinct branches that range from simple mechanics to advanced particle physics.