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Physics, 05.10.2019 07:00 ayoismeisjjjjuan

What questions in particle physics led to the necessity for the development of the quark theory? what were the deficiencies in the older theories that made it necessary to formulate a theory of particle structure on a level below (i. e., smaller than) that of electrons, protons, and neutrons? what observational evidence is there for the existence of smaller particles within the proton, for example?

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What questions in particle physics led to the necessity for the development of the quark theory? wh...
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