摘要:

The relativistic covariance of the four-vector of the total energy–momentum of a macroscopic body that, in its rest frame, carries general stationary macroscopic charge and current distributions is demonstrated in explicit detail using the balancing of the forces in the body, the existence of hidden mechanical momentum, and the Lorentz-transformation properties of the energy-momentum four-tensors of the “mechanical” and “electromagnetic” parts of the system.

ISSN:0002-9505    

DOI:10.1119/1.18879

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

A wheel or sphere rolling without slipping on the inside of a sphere in a uniform gravitational field can have stable circular orbits that lie wholly above the “equator,” while a particle sliding freely cannot.

ISSN:0002-9505    

DOI:10.1119/1.18882

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

We show that a noncyclic phase of geometric origin has to be included in the approximate adiabatic wave function. The adiabatic noncyclic geometric phase for systems exhibiting a conical intersection as well as for an Aharonov–Bohm situation is worked out in detail. A spin-12experiment to measure the adiabatic noncyclic geometric phase is discussed. We also analyze some misconceptions in the literature and textbooks concerning noncyclic geometric phases.

ISSN:0002-9505    

DOI:10.1119/1.18799

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

For some time we have experimented at the Eindhoven University of Technology with a system which provides students with an electronic feedback path to the lecturer, audience paced feedback (APF). In this paper we describe this APF system, and give indications of its effectiveness.

ISSN:0002-9505    

DOI:10.1119/1.18883

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.18886

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.18887

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.19074

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.18798

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

ISSN:0002-9505    

DOI:10.1119/1.18905

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

ISSN:0002-9505    

DOI:10.1119/1.18888

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP