ISSN:0002-9505    

DOI:10.1119/1.16388

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.16390

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.16392

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.16393

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.16394

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

摘要:

A gedanken gadget is described, based on an idea of Greenberger, Horne, and Zeilinger, that provides a more powerful demonstration of quantum nonlocality than Bell’s analysis of the Einstein–Podolsky–Rosen experiment.

ISSN:0002-9505    

DOI:10.1119/1.16503

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

摘要:

This article proceeds from the premise that one of the major reasons for the perceived crisis in science education is the failure of our colleges and universities to provide the type of preparation that precollege teachers need to teach science effectively. The perspective taken is based on many years of teaching physics and physical science to prospective and practicing teachers at all grade levels. The inadequacy of the present system of preparing teachers is examined and an argument is presented for offering special physics courses for teachers. Experience at the University of Washington provides the basis for a discussion of the type of intellectual objectives and instructional methods that should characterize such courses.

ISSN:0002-9505    

DOI:10.1119/1.16395

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

摘要:

The Ehrenfest equations govern the time evolution of quantal expectation values, and they have a widely known generalization that governs the time evolution of quantal uncertainties. Unfortunately, these results are usually applied only to free particles. Here, these methods are reviewed and applied to the simple harmonic oscillator, revealing a simple and beautiful picture of wave‐packet motion with an obvious classical limit.

ISSN:0002-9505    

DOI:10.1119/1.16396

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

摘要:

The propagation velocity of light in a medium is the transport velocity of the energy. According to the theory of wave motion, this velocity is also the group velocity of light. But, by using quantum theory, it is proved that the group velocity is not the instantaneous velocity of a photon, but rather the statistical average velocity of photons in a medium.

ISSN:0002-9505    

DOI:10.1119/1.16397

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP

摘要:

After a general discussion of the physical significance of holonomy group transformations, a relation between the transports of Fermi–Walker and Levi–Cività inspecialrelativity is pointed out. A well‐known example—the Thomas–Wigner angle—is rederived in a completely frame‐independent manner using Clifford algebra.

ISSN:0002-9505    

DOI:10.1119/1.16401

出版商:American Association of Physics Teachers    

年代:1990

数据来源: AIP