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IEE Proceedings A - Physical Science, Measurement and Instrumentation, Management and Education - Reviews

Issue 7 • November 1983

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Displaying Results 1 - 8 of 8
  • Measurement of permittivity using an open resonator

    Publication Year: 1983, Page(s):365 - 368
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (528 KB)

    When a flat sheet of dielectric is in an open resonator, its surfaces do not coincide with the curved wavefronts of the electric field. For calculations, the specimen may be imagined to be composed of a specimen having curved faces plus a thin concave lens, whose refractive index must be supposed to vary with the position of the lens in the field. The results of measurements, using specimens of po... View full abstract»

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  • Book review: High-Temperature Superconductivity

    Publication Year: 1983
    IEEE is not the copyright holder of this material | PDF file iconPDF (159 KB)
    Freely Available from IEEE
  • Experimental and numerical investigation of field conditions associated with the transport of low-conductivity liquids and powders

    Publication Year: 1983, Page(s):369 - 378
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1225 KB)

    The generation of static electricity during the transport of low-conductivity materials is a well known phenomenon. Until recently, large-scale experimentation has been the principal means by which the electrostatic conditions associated with the charging of processes have been assessed. Furthermore, the wide range of materials which exhibit differing charging characteristics, together with the va... View full abstract»

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  • Transient low-current arc cathode processes on metals having a very thin oxide film in air at atmospheric pressure

    Publication Year: 1983, Page(s):379 - 386
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1280 KB)

    Twelve different metals, having oxide films of a few nanometres, were used as the cathode for a single 4 A arc in air at atmospheric pressure, about 30 ¿¿m long and of duration between 3.8 ns and 3.5 ¿¿s, and the surface was then examined by scanning electron microscopy. Three groups of metals were distinguished; those having semiconducting oxide leading to scattered craters; those with insulating... View full abstract»

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  • High-voltage test equipment for vacuum interrupters and contacts (`arc and spark¿ testing)

    Publication Year: 1983, Page(s):387 - 389
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (408 KB)

    An automated `arc and spark¿ test method has been developed for economical high-voltage testing of vacuum interrupters, taking into consideration both the physics of vacuum breakdown and realistic service conditions. Each breakdown test is preceded by a well defined but variable switching operation. Test control and evaluation by a computer provide fast and economic execution, even of large serie... View full abstract»

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  • Influence of electric fields on flying insects

    Publication Year: 1983, Page(s):390 - 392
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (365 KB)

    The paper describes experiments on blowflies and fruitflies in electrostatic fields. At a high enough field strength, yet not so high as to cause flashover, the insect becomes paralysed; however, if the field is quickly removed the insect eventually regains control and can fly away apparently unharmed. This occurs whether the insect is originally in contact with one of the electrodes or in flight ... View full abstract»

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  • The role of the engineer in a free economy

    Publication Year: 1983, Page(s):393 - 397
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (860 KB)

    The population of the world is increasing and is almost certain to reach six billion by the year 2000. In many countries, the standard of living is deplorably low so that more than half the present world population cannot do much more than exist. In some countries, they are getting even poorer and, if the population goes on increasing, are in danger of starvation. This depressing situation can onl... View full abstract»

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  • Setting up small high-technology companies

    Publication Year: 1983, Page(s):398 - 400
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (384 KB)

    A personal case history of the problems of establishing a small high-technology company to manufacture and develop specialised microwave components that had originated in the author's academic research is presented in the paper. Part-time involvement grew rapidly into full-time commitment and, within three years, to the attraction of venture capital and a major expansion into the USA. The special ... View full abstract»

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