ISSN:0031-9228    

DOI:10.1063/1.2995267

出版商:AIP    

年代:1979

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2995232

出版商:AIP    

年代:1979

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2995235

出版商:AIP    

年代:1979

数据来源: AIP

摘要:

When does a metal not act like one? When it is a two‐dimensional thin film at 0 K. So says a recent theory by Elihu Abrahams (Rutgers), Philip W. Anderson (Princeton and Bell Labs), Donald C. Licciardello (Princeton) and T. V. Ramakrishnan (on leave at Princeton from the Indian Institute of Technology). Their surprising prediction that thin films never exhibit true metallic conductivity, and the renormalization‐group scheme used to obtain this result, both created such a stir at the Gordon Conference on Quantum Liquids and Solids (held in July in Plymouth, N.H.) that next year's conference may be heavily devoted to this topic. The work of the Rutgers–Bell–Princeton team (since dubbed “the gang of four”) is a further realization of the ideas of David Thouless (Yale) who had predicted nonmetallic behavior at low temperatures for thin wires whose impurity resistances exceeded 10 kilo‐ohms.

ISSN:0031-9228    

DOI:10.1063/1.2995236

出版商:AIP    

年代:1979

数据来源: AIP

摘要:

We don't know whether he named it after St. Elmo's fire, or after his clever Uncle Elmo. Ray Dandl, who guided the evolution of the Elmo Bumpy Torus over the last two decades at the Oak Ridge National Laboratory, won't tell. The Elmo Bumpy Torus is something of a hybrid between toroidal and mirror fusion‐reactor designs. Last October, a Department‐of‐Energy Concept Review Committee chose the EBT concept from among nine magnetic‐confinement alternatives to tokamaks and mirrors, to be supported for a proof‐of‐principle test. Early this year the DOE Office of Energy Research concurred in the choice of the Elmo Bumpy Torus, and Oak Ridge is at present conducting a design competition among four industrial consortia for an EBT proof‐of‐principle facility, which is expected to be ready for experiments in about 1984. Aside from the Oak Ridge machine, the only other such bumpy torus currently in operation is in Japan.

ISSN:0031-9228    

DOI:10.1063/1.2995237

出版商:AIP    

年代:1979

数据来源: AIP

摘要:

With the growth of metropolitan areas and their demand for electric power, it is becoming increasingly difficult to transport adequate electric power to such centers by conventional transmission lines. Several recent studies have concluded that by the end of the next decade it will be hard to make do without installing high‐capacity underground cables to transport power to the central cities. Overhead lines are in many ways unacceptable in built‐up areas, and conventional underground cables have insufficient carrying capacity.

ISSN:0031-9228    

DOI:10.1063/1.2995238

出版商:AIP    

年代:1979

数据来源: AIP

摘要:

What was involved in my transition from nuclear physicist to biomedical investigator and recipient of a Nobel Prize in Physiology or Medicine in 1977 for the development and application of radioimmunoassay? What is radioimmunoassay? In what way did physics have a role in the development of the concepts and methodology of radioimmunoassay? How did it begin?

ISSN:0031-9228    

DOI:10.1063/1.2995239

出版商:AIP    

年代:1979

数据来源: AIP

摘要:

Night‐time in 1879,but a scant 100 years ago, was considerably darker than the nocturnal world of today. Artificial illumination was limited to kerosene lamps, illuminating gas, the just‐emerging arc lamp for street lighting and a few lingering candles.

ISSN:0031-9228    

DOI:10.1063/1.2995240

出版商:AIP    

年代:1979

数据来源: AIP

摘要:

Observing resonances in cross‐section‐versus‐energy curves has long been a way of life for nuclear and particle physicists, for whom this is often the only way to detect short‐lived quantum states. Atomic physicists, on the other hand, have traditionally used other means for observing internal energy states of atoms and molecules. But sixteen years ago a resonance in the cross section for electrons scattering off helium changed the tradition, and by now there is a long catalog of observed resonances in atoms and molecules and an accompanying body of theoretical work that seeks to account for the newly discovered states and explain their behavior.

ISSN:0031-9228    

DOI:10.1063/1.2995241

出版商:AIP    

年代:1979

数据来源: AIP

ISSN:0031-9228    

DOI:10.1063/1.2995242

出版商:AIP    

年代:1979

数据来源: AIP