ISSN:0031-9228    

DOI:10.1063/1.3022424

出版商:AIP    

年代:1971

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.3022374

出版商:AIP    

年代:1971

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.3022376

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

A thermometer can be a glass‐ceramic capacitor, a superconducting tunnel junction, theHe3melting curve or a paramagnetic salt. These approaches were all discussed at the Fifth Symposium on “Temperature—Its Measurement and Control in Science and Industry,” which was held in Washington at the end of June. They are attempts to find additional ways of measuring temperatures below the range of the platinum resistance thermometer—below about 14 K.

ISSN:0031-9228    

DOI:10.1063/1.3022378

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

The plan to fit Stanford's 20‐GeV electron linac with superconducting cavities has been dropped, and a new proposal to upgrade performance has been submitted to the AEC. SLAC director Wolfgang Panofsky told us that at present a complete conversion to superconducting cavities would be noncompetitive, both in terms of time and money.

ISSN:0031-9228    

DOI:10.1063/1.3022379

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

Argonne National Laboratory has made progress with its booster development project to increase the circulating intensity in the 12‐GeV Zero Gradient Synchrotron. In a series of tests last spring, experimenters successfully injected negative hydrogen ions(H−)from the 50‐MeV linac into the booster synchrotron—the former 2‐GeV electron accelerator acquired from Cornell University in 1969. The ions were then stripped of electrons, leaving a proton beam that was coasted (not accelerated) around the booster ring.

ISSN:0031-9228    

DOI:10.1063/1.3022380

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

We are a society in transition. Nearly all of our values and institutions appear to be shifting around us. Can physics help us understand the transition? The answer for me is clearly—yes. There is something unique in the history and philosophy of science, particularly physics, among all aspects of human culture. Physics welcomes change and knows how to use it. Certainly the experience of physics should help us to understand the nature of the transition we now face and to direct it for Man's benefit.

ISSN:0031-9228    

DOI:10.1063/1.3022381

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

Laymen are probably more aware of the spectacular recent discoveries in astrophysics than in any other science. Newspapers and magazines have conditioned their readers to accept the reality of quasars, pulsars, black holes, gravitational waves, 2.7‐K blackbody radiation, interstellar molecules, solar wind and ancient moon rocks, to name only a few currently fashionable topics.

ISSN:0031-9228    

DOI:10.1063/1.3022382

出版商:AIP    

年代:1971

数据来源: AIP

摘要:

Physicists and astronomers, according to the 1970 National Register of Scientific and Technical Personnel▸ earned a median salary of $15 900; $1900 higher than they earned two years earlier and $900 higher than the median for all scientists.▸ had an unemployment rate, in early 1970, of 2.1&percent;, compared with 1.6&percent; for all scientists and 1.0&percent; at the time of the previous (1968) Register. Unemployment was substantially lower for those with PhD's than for those who stopped with a master's.▸ continue to work for educational institutions more than for any other kind of employer, and work at research and development more than at any other kind of activity.

ISSN:0031-9228    

DOI:10.1063/1.3022383

出版商:AIP    

年代:1971

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.3022384

出版商:AIP    

年代:1971

数据来源: AIP