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Capra, Fritjof – American Journal of Physics, 1979
Reviews the developments in S-matrix theory over the past five years which have made it possible to derive results characteristic of quark models without any need to postulate the existence of physical quarks. In the new approach, the quark patterns emerge as a consequence of combining the general S-matrix principles with the concept of order.…
Descriptors: Mathematics, Models, Nuclear Physics, Physics
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Greenberger, Daniel M. – American Journal of Physics, 1979
The extended Galilean transformation carries an inertial frame into a rigid frame with uniform spatial, but arbitrary translational acceleration. Besides being useful in discussing the equivalence principle, this transformation provides a physical interpretation for the theorem in nonrelativistic quantum mechanics, that we cannot coherently…
Descriptors: Mathematics, Models, Physics, Quantum Mechanics
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Barnett, Charles S. – American Journal of Physics, 1979
Shows how the good-as-new postulate leads to the exponential function, which in turn leads to a complete probabilistic description of the decay of an aggregate of identical excited atoms. (Author/GA)
Descriptors: Atomic Theory, College Science, Higher Education, Models
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Devlin, J. C.; Tolles, W. M. – American Journal of Physics, 1979
Describes an experiment on light trapping in thin liquid films. Injection of a thin layer of solution at the boundary of a moving solvent is utilized to create a thin fluid sheet having an index of refraction greater than that of the surrounding medium. (Author/SA)
Descriptors: College Science, Higher Education, Instructional Materials, Laboratory Techniques