Nuclei

The existence of a stable nucleus presents a fundamental puzzle: since protons are positively charged, they experience strong electrostatic repulsion that should tear the core apart. This is prevented by the strong nuclear force, a highly powerful, short-range attractive force that acts equally between protons and neutrons, binding them tightly together.

The stability of a nucleus depends heavily on its binding energy. Nuclei that are unstable naturally undergo radioactivity, emitting alpha, beta, or gamma radiation to reach a more stable configuration. This chapter also explores how manipulating nuclear bonds unlocks tremendous energy through two primary processes:

Nuclear Fission: The splitting of a heavy, unstable nucleus into lighter fragments (the basis for nuclear reactors).

Nuclear Fusion: The forcing together of light nuclei to form a heavier one (the process that powers the sun).