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

Issue 6 • Date September 1981

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Displaying Results 1 - 8 of 8
  • Low-pressure sodium discharge lamps

    Publication Year: 1981, Page(s):397 - 414
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (4431 KB)

    The review article deals with the low-pressure sodium lamp, which, since its very introduction, has been the most efficient light source available. The principle of this lamp is that light is generated as the result of an electric discharge with sodium as emitting material and an inert gas as a ?buffer gas?. The spectrum emitted by this lamp consists of the yellow sodium resonance lines of 589.0 a... View full abstract»

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  • High-pressure sodium discharge lamps

    Publication Year: 1981, Page(s):415 - 441
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (3671 KB)

    The review article deals with the high-pressure sodium (HPS) discharge lamp, characterised by a sodium vapour pressure above 5 kPa and a power density of about 100 Wcm¿3. In its short history ¿ the sodium-resistant translucent alumina used as the discharge tube material was invented only in the late 1950s ¿ continuous research and development has led to a good understanding of the discharge phy... View full abstract»

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  • 16th Appleton Lecture. Remote sounding of atmosphere and ocean for climate research

    Publication Year: 1981, Page(s):442 - 448
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (942 KB)

    Observation from space of radiation reflected, scattered or emitted in various regions of the electromagnetic spectrum can yield information about the structure of the earth's atmosphere and oceans, which is of importance for climate research. The accuracy of remote sounding observations of atmospheric temperature is reviewed, plans for improved radiation budget observations are mentioned and new ... View full abstract»

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  • Self-generated rotation in a magnetic levitator

    Publication Year: 1981, Page(s):449 - 452
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (538 KB)

    The paper describes a levitator, using a proximity height detector, in which the supporting DC electromagnet provides a torque about the vertical axis, so that the floating object rotates continuously. The main properties of the system are explained qualitatively as a form of reluctance-motor action, due to the shaping of the magnetic field interacting with fluctuations superimposed on the magnet ... View full abstract»

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  • Solution of resistive meshes by deterministic and Monte Carlo transmission-line modelling

    Publication Year: 1981, Page(s):453 - 462
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1103 KB)

    The conventional random-walk and conventional adjoint random-walk processes for the solution of general resistive networks are summarised. Particular attention is paid to resistive meshes which model potential and diffusion fields. The paper proceeds to introduce a new single-step simultaneous-displacements method for general resistive networks through the concept of transmission-line modelling (T... View full abstract»

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  • Faraday and electrical conductors. An examination of the copper wire used by Michael Faraday between 1821 and 1831

    Publication Year: 1981, Page(s):463 - 471
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1981 KB)

    Samples of copper wire from the coils and toroids made and used by Michael Faraday (1791¿¿1867), during the period of his greatest electrical discoveries, were inspected for quality of manufacture and tested chemically and electrically to determine metal purity and electrical conductivity. The outcome of the enquiry establishes that the copper wire of Faraday's time was not only indifferently made... View full abstract»

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  • Evaluating Technological Innovations

    Publication Year: 1981
    IEEE is not the copyright holder of this material | PDF file iconPDF (148 KB)
    Freely Available from IEEE
  • Mathematics for Management

    Publication Year: 1981
    IEEE is not the copyright holder of this material | PDF file iconPDF (148 KB)
    Freely Available from IEEE