Worlds Within Worlds: The Story of Nuclear Energy, Volume 2 (of 3) / Mass and Energy; The Neutron; The Structure of the Nucleus

The text explains mass–energy equivalence and the emergence of relativity, showing how tiny losses of mass can release enormous energy and how experiments on light's speed and high-velocity particles supported the theory. It then examines nuclear structure, comparing proton–electron and proton–neutron models, analyzing nuclear spin, the discovery and role of the neutron, and the forces that bind nucleons. Topics include methods such as particle accelerators and neutron bombardment, experimental evidence for new elements and nuclear reactions, and implications for fission, fusion, and the technological harnessing of nuclear energy.