Nuclear physics is the study of the nucleus of an atom, which comprises protons and neutrons. The nucleus is the central part of an atom, making up most of its mass. The study of nuclear physics involves understanding the interactions between protons and neutrons within the nucleus, as well as the forces that hold them together.

Ghoshal's research focused on nuclear physics, particularly on the study of nuclear reactions and the properties of radioactive nuclei. His most notable contributions include:

The book follows a logical progression from historical models to modern applications: