摘要:

The theoretical and experimental context within which the “Copenhagen Interpretation” of quantum theory was generated is underemphasized by recent critics of the Bohr-Heisenberg philosophy. When an interpretation of a theory has been as successful as this one has been, there is little practical warrant for the “alternative interpretations” which have, since Bohm, been receiving prominence. Indeed, these are not even genuine alternatives; although rich in provocative prose, they provide not a scrap of algebra with which to organize the practical physicist's thinking. Several objections to the Bohr interpretation are critically examined, as is also a particular use of the correspondence principle which has seemed to cast doubt on the Copenhagen ideas.

ISSN:0002-9505    

DOI:10.1119/1.1934739

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

摘要:

A number of rules for forming operators corresponding to classical quantities are investigated. Spin and relativistic effects are excluded from consideration. The two rules which are in agreement with the customary interpretation of quantum mechanics are ambiguous in that they do not yield unique operators. The other rules considered yield unique operators but are in disagreement with the customary interpretation of quantum mechanics. It is shown that any symmetrization rule is in this category. All the rules investigated are linear, but no attempt is made to formulate a nonlinear rule. It is indicated that additional experimental evidence is necessary to clarify the question of quantum-mechanical operators.

ISSN:0002-9505    

DOI:10.1119/1.1934740

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

摘要:

A discursive presentation is given of the English flute or recorder as a serious musical instrument including remarks based on acoustical theory and experiment, concerning such matters as intonation, partial content, blowing pressure, and some possible criteria for the “good” recorder, among other subjects.

ISSN:0002-9505    

DOI:10.1119/1.1934741

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

摘要:

We show that the classical similarity relations and virial theorem imply particular forms for the internal energy and the equation of state in systems where the potentials are homogeneous of degreen. We also show that for these systems the laws of mechanics imply that the differential of entropy is exact. We deduce rigorously some experimental results which must hold for any gas whose constituent particles interact by means of a homogeneous potential. One physical situation in which this model may be expected to be valid is the case of a totally ionized gas with a superimposed radiation field.

ISSN:0002-9505    

DOI:10.1119/1.1934742

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

摘要:

Physics teachers and researchers in educational institutions can profit greatly from the surplus property program of the United States Government. Equipment and supplies of interest in physics are currently available through this program. Much additional surplus property could be transferred to educational institutions if greater numbers of physics teachers would participate vigorously in the program. This report brings up to date an earlier article on the subject and presents recommendations of ways in which physicists can use the program to greater advantage.

ISSN:0002-9505    

DOI:10.1119/1.1934743

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

摘要:

This paper illustrates a form for writing electromagnetic equations such that by substituting the appropriate value for each of two arbitrary constants one immediately obtains the electromagnetic equations written in any of the consistent systems of units. One constant is a dimensionless term called a rationalizing factor that takes the value4πin unrationalized systems and unity in rationalized systems. The other isε0, the capacitivity of free space. Except for the rationalizing factor, all equations are identical in appearance with equations written in the rationalized MKSQ system of units. Maxwell's equations and some other commonly used relations are presented in this form. A simple method of obtaining the equations in the Gaussian and the Heaviside-Lorentz mixed systems of units from the form presented for consistent systems is also given.

ISSN:0002-9505    

DOI:10.1119/1.1934744

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

摘要:

This paper is the substance of an address delivered at the annual meeting of AAPT in New York on January 31, 1958.

ISSN:0002-9505    

DOI:10.1119/1.1934745

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1934747

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1934748

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1934750

出版商:American Association of Physics Teachers    

年代:1959

数据来源: AIP