Quark

:For other uses of this term, see: Quark (disambiguation)

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Quarks are one of the two basic constituents of matter in the Standard Model of particle physics. (The others are leptons.) Antiparticles of quarks are called antiquarks. Quarks and antiquarks are the only fundamental particles which interact through all four of the fundamental forces.

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The single most important property of quarks is called confinement. This is the experimental fact that individual quarks are not seen ? they are always confined inside hadrons, subatomic particles like protons, neutrons, and mesons. This fundamental property is expected to follow from the modern theory of strong interactions, called quantum chromodynamics (QCD). Although there is no mathematical derivation of confinement in QCD, it is easy to show using lattice gauge theory.

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Matter: Matter is commonly referred to as the substance of which physical objects are composed. In physics, it is everything that is constituted of elementary fermions. Philosophically, matter constitutes the formless substratum of all things, which exists only potentially and from which reality is produced...

Standard Model: The Standard Model of particle physics is a theory which describes the strong, weak, and electromagnetic fundamental forces, as well as the fundamental particles that make up all matter. Developed between 1970 and 1973, it is a quantum field theory, and consistent with both quantum mechanics and spe...

Particle physics: Particle physics is a branch of physics that studies the elementary constituents of matter and radiation, and the interactions between them. It is also called high energy physics, because many elementary particles do not occur under normal circumstances in nature, but can be created and detected dur...

Quark related Images and Photos (experimental)

Star Trek Ladies Man Quark T-Shirt