What is an elementary particle?
Particle physics is a branch of physics that studies the particles that make up matter. So this branch of physics tries to understand matter at its most fundamental level and how matter behaves at that level. It also tries to understand how matter interacts and turns from one form to another.
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In particle physics, an elementary particle is a particle that is not composed of smaller particles. In other words, it is a particle that is...
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What is an atom? Learn the definition of an atom, what atoms contain, the nucleus in the middle of an atom, what atoms look like, and examples of atoms.