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Q

A fundamental fermion that interacts via the electromagnetic, weak and strong force. There are six types (flavors) of quarks that are known as up, down, charm, strange, top and bottom. Quarks have electric charge of either +2/3 (up, charm, top) or -1/3 ( down, strange, bottom) in units of electron charge. Quarks only exist inside hadrons because they are confined by the strong force field.

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Last significant update: 10-Sept-2002