Subatomic particles in physics constitute a fundamental domain within particle physics and quantum mechanics, defining matter via point-like constituents that obey specific conservation laws and symmetry principles. The abstract theory rests on the distinction between fermions, which adhere to the Pauli exclusion principle and form stable matter, and bosons, which mediate fundamental forces through gauge interactions. This framework establishes the ontology of elementary particles as excitations in quantum fields, providing a rigorous theoretical basis for understanding atomic stability without referencing chemical application contexts.
Prerequisite chain context: requires Cathode Ray Tube Physics in Discharge Tubes.