ISSN:0002-9505    

DOI:10.1119/1.18596

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.18598

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.18601

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.18633

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

摘要:

This Resource Letter provides a guide to the literature on the role of information theory in physics. Journal articles and books are cited for the following topics: early history, physical and mathematical connections, and a broad range of physical applications.

ISSN:0002-9505    

DOI:10.1119/1.18776

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

摘要:

A purely geometrical approach to Minkowski space–time diagrams is described that exploits only the symmetries of appropriate rhombi and rectangles. No explicit use is made of rectangular or oblique coordinate axes. Although designed for presenting the subject to nonscientists, the approach might also be illuminating to some scientists.

ISSN:0002-9505    

DOI:10.1119/1.18574

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

摘要:

In this paper, the rotating disk as an example of a non-Euclidean space is carefully examined; the basic arguments of Einstein are emphasized. A new approach is also presented which resolves the Ehrenfest paradox.

ISSN:0002-9505    

DOI:10.1119/1.18575

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

摘要:

The two theories developed to explain the low friction of ice, pressure melting and frictional heating, require opposite temperature shifts at the ice-skate interface. The arguments against pressure melting are strong, but only theoretical. A set of direct temperature measurements shows that frictional heating is the dominant mechanism because temperature behaves in the manner predicted by the theory of frictional heating. Like snow skis, ice skates are warmed by sliding and then cool when the sliding stops. The temperature increases with speed and with thermal insulation. The sliding leaves a warm track on the ice surface behind the skate and the skate sprays warm ejecta.

ISSN:0002-9505    

DOI:10.1119/1.18576

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

摘要:

We present the results of an experiment in which we observe a sub-Poissonian photocurrent. This photocurrent is generated by detecting the light emitted from a high-quantum-efficiency light-emitting diode driven by a high-impedance current source. We also present classical, semi-classical and quantum mechanical theories of photoelectric detection. The observed sub-Poissonian statistics are in agreement with quantum mechanical predictions, but are unexplainable using the classical and semi-classical theories. The experiment uses only equipment already found in most undergraduate laboratories, making this a nice experiment to demonstrate a purely quantum mechanical effect.

ISSN:0002-9505    

DOI:10.1119/1.18577

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP

摘要:

I give an answer to the frequently asked question of the article’s title, based on an analogy between the description of gravitational waves in the transverse-traceless gauge and the description of an expanding universe in comoving coordinates. Both use freely falling masses to define the coordinate system. Taking advantage of the insight that has been achieved in cosmology, I show how to understand the operation of an interferometric gravitational wave detector in a way that resolves the apparent paradox.

ISSN:0002-9505    

DOI:10.1119/1.18578

出版商:American Association of Physics Teachers    

年代:1997

数据来源: AIP