Overview of radioactivity, the process in which particles are emitted from nuclei as a result of nuclear instability.

A brief explanation of the process of gamma decay is provided.

Site provides the ABC's of nuclear science including radioactivity and gamma decay to fission and comic rays.

Entry explores the process of beta decay which occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other.

This site from the Jefferson Lab provides a glossary item with a good illustration.

This entry provides a summary of radioactivity in nature and the decay chain.

Enrico Fermi was a titan of twentieth-century physics. He outlined the statistical laws that govern the behavior of particles that abide by the Pauli exclusion principle and developed a theoretical model of the atom in his mid-twenties....