Elementary particle Updated 2025-07-16
The opposite of quasiparticle, see notaby: quasiparticles vs elementary particles.
Composite particle Updated 2025-07-16
Eightfold way (physics) Updated 2025-07-16
Strangeness Minus Three (BBC Horizon 1964)
Source. Basically shows Richard Feynman 15 minutes on a blackboard explaining the experimental basis of the eightfold way really well, while at the same time hyperactively moving all over. The word symmetry gets tossed a few times.