Most physicists were perfectly happy with the jumble of ideas that purportedly constituted the Copenhagen interpretation itself, since questions about the meaning of quantum physics had little bearing on their work. The mathematical formalism of the theory continued to work remarkably well in a wide variety of postwar applications of physics to the military-industrial complex, which turned most physicists to work in nuclear physics or solid-state physics (the branch of physics that, shortly after the war, led to the development of the silicon transistor, as well as many of the other materials
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