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Tht development of the concept of subatomic particles is traced from the atom to the mesons and nucleons. The roles of the quantum theory and of the concept of symmetry are discussed, the significance of the research into subatomic particles for the physics is stressed. Resume L'evolution du terme particule elementaire est analysee, depuis I'atome jusqu'aux mesons et aux nucleons. Le roIe de Ia theorie des quanta ainsi que Ie terme symetrie font I'objet d'une discussion, tandis que I'auteur souligne l'importance de Ia recherche fondamentale relative aux particules elementaires pour Ia...

The second volume of this authoritative work traces the material outlined in the first, but in far greater detail and with a much higher degree of sophistication. The authors begin with the theory of the electromagnetic interaction, and then consider hadronic structure, exploring the accuracy of the quark model by examining the excited states of baryons and mesons. They introduce the color variable as a prelude to the development of quantum chromodynamics, the theory of the strong interaction, and go on to discuss the electroweak interaction--the broken symmetry of which they explain by the...