Nuclear Physics is the scientific study of the forces, reactions and internal structures of atomic nuclei. It is the field of physics that studies the building blocks and interactions of atomic nuclei. In 1905 Albert Einstein formulated the idea of mass energy equivalence. While the work on radioactivity by Becquerel, Pierre and Marie Curie Predates this, an explanation of the source of the energy of radioactivity would have to wait for the discovery that the ...