In the literal sense, nothing is simpler than an elementary particle: By definition, a particle is considered to be elementary only if there is no evidence that it is made up of smaller constituents.

The Standard Model is far more than elementary particles arranged in a table. The Standard Model of particle physics is often visualized as a table, similar to the periodic table of elements, and used ...

On one hand there is quantum mechanics and the standard model, which describes the world of the very small. On the other hand there is general relativity, which describes gravity and the world of the ...

Suggested Citation: "3 Symmetries, Forces, and Particles." National Research Council. 1998. Elementary-Particle Physics: Revealing the Secrets of Energy and Matter. Washington, DC: The National ...