摘要:

A connection between gauge transformations of the third kind and operator gauge transformations of the first and second kinds is shown to hold for the electron propagator and for the vertex function of quantum electrodynamics as well as for the photon propagator. A method for calculating the gauge change of any time orderedn-point function is indicated.

ISSN:0002-9505    

DOI:10.1119/1.1973121

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

摘要:

The main purpose of the paper is to illustrate the analogy between the radiation from a guiding surface which is bent or curved, and the radiation from an electron which is deflected (brems-strahlung) or moves in a curved path in a magnetic field (synchrotron radiation). In developing this analogy the significance of the “characteristic radius” associated with a cylindrical or spherical wave system, defined as the radius at which the argument of the radial wavefunction is equal to its order, is examined. A small diversion is made to illustrate the relevance of this concept to atomic radiation, supergain antennas, and wave-mechanical scattering.

ISSN:0002-9505    

DOI:10.1119/1.1973122

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

摘要:

The WKB method is applied to the problem of bound states of an electron in the field of a finite dipole. A necessary condition for binding is derived which suggests that bound states may exist only if the dipole moment is larger than a certain minimum value. It is also shown that the number of bound states given by the WKB method is comparable to the exact number for the one- and three-dimensional square-well potentials.

ISSN:0002-9505    

DOI:10.1119/1.1973123

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

摘要:

Kepler'sHarmonics of the Universe, the mature work in which he first enunciated his third law of planetary motion, was a consummation of some of his youthful ideas. He introduced the terminertiainto physics and astronomy, extended its purview to the heavens, and contributed essential components to the fully developed concept of inertia.

ISSN:0002-9505    

DOI:10.1119/1.1973124

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1973126

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1973139

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1973143

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1973145

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1973150

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1973153

出版商:American Association of Physics Teachers    

年代:1966

数据来源: AIP