ISSN:0031-9228    

DOI:10.1063/1.3022833

出版商:AIP    

年代:1971

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.3022783

出版商:AIP    

年代:1971

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.3022785

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

Recently many physicists have become intrigued with trying either to explain or to duplicate the Schwarz–Hora effect, in which an electron wave is apparently modulated by a light wave. In an invited paper at the March APS meeting Helmut Schwarz (Rensselaer Polytechnic Institute, Hartford Graduate Center) discussed his most recent observations of the effect, first reported by himself and Heinrich Hora (Max Planck Institute, Garching, Germany) in June 1968 (Bull. Amer. Phys. Soc.13, 897, 1968 andAppl. Phys. Lett.15, 349, 1969).

ISSN:0031-9228    

DOI:10.1063/1.3022787

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

An extremely stable laser developed at the Joint Institute for Laboratory Astrophysics, Boulder, Colorado, is providing a sensitive way to measure earth strain. Judah Levine and John L. Hall have built an interferometric strain gauge whose key element is a methane‐stabilized 3.39‐micron helium–neon laser at the Poorman's Relief Mine near Boulder. The stabilized He–Ne laser is beat against a second He–Ne laser locked to a 30‐meter Fabry–Perot interferometer and fluctuations in the beat frequency are a direct measure of changes in the 30‐meter path length.

ISSN:0031-9228    

DOI:10.1063/1.3022788

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

The American Institute of Physics has ended its fourth decade in a year of economic turmoil for science—one accompanied by an abruptly dismal job market for physics PhD's and by concern about unemployment and underemployment of physicists generally. Let us here review the contributions, education and employment of physicists during AIP's 40 years, so as to place the 1970 experiences in perspective and so understand them better. This perspective will allow us to look at the future of physics and physicists with the insight we need if we are to avoid a repetition of the current difficulties.

ISSN:0031-9228    

DOI:10.1063/1.3022789

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

The American Institute of Physics began in October 1931, a time of great difficulty for our science. This was the decade of the Great Depression, and a widespread “stop‐science” movement blamed us for society's problems. It was also a time of divisiveness within physics: In 1899 one group, the American Physical Society, could encompass all physicists, but separatism had given rise to five societies. The leaders of that time, men such as Paul D. Foote, George B. Pegram, F. K. Richtmyer and Karl T. Compton, conceived of the rather close federation that is AIP to bring physicists together again, to improve the relations between physics and the rest of society and, not incidentally, to serve as the publisher of the increasingly important US physics literature.

ISSN:0031-9228    

DOI:10.1063/1.3022790

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

Service to the individual physicist has always been central to the aims of the American Institute of Physics throughout its 40‐year history of service to its member societies. Yet the year 1970 saw an even stronger dedication to the needs of the physicists in AIP's family. The particular problems uppermost during the year can be summarized as “too much and too few”—too much physics literature (the “information explosion”) and too few employment opportunities.

ISSN:0031-9228    

DOI:10.1063/1.3022791

出版商:AIP    

年代:1971

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.3022792

出版商:AIP    

年代:1971

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.3022794

出版商:AIP    

年代:1971

数据来源: AIP