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Engineering Science and Education Journal

Issue 6 • Date Dec 1998

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Displaying Results 1 - 10 of 10
  • Non-thermal bioeffects induced by low-intensity microwave irradiation of living systems

    Page(s): 261 - 269
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    Attention is drawn to a multitude of frequency-specific, nonthermal bioeffects-induced in living systems by ultra-low-intensity microwave radiation-the existence of which is not currently taken into account in the formulation of the safety limits to which microwave devices must conform. An attractive possibility of accounting for these effects is in terms of Frohlich's coherent excitations involving strongly excited macroscopic electric polarisation waves, which, on quite general grounds, he predicted living systems to support-provided they are sufficiently active metabolically-in consequence of the prevalence therein of electric dipoles of various kinds. The therapeutic exploitation of low-intensity microwave irradiation in Russia and the Ukraine is noted, and attention drawn to some recent theoretical work which suggests that water (a dipolar system in its own right) might itself support mesoscopic coherent domains View full abstract»

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  • Working the body magnetic

    Page(s): 269 - 271
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  • Engineering mathematics: the crisis continues

    Page(s): 273 - 281
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    This article raises the main points of discussion relevant to the gradual dilution and weakening of university mathematics as an integral part of the engineering degree, and attempts to present an assessment of the situation in the light of persistent problems facing engineering mathematics and its changing nature View full abstract»

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  • Computational electromagnetism

    Page(s): 281
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  • Making light work harder

    Page(s): 282 - 288
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    The seminal ideas underlying laser theory originated many decades ago and so it is perhaps remarkable that lasers took so long to become exploited as useful and reliable devices. Possibly even more surprising is the enormous diversity of practical applications which they now find in industry and medicine, as well as in `blue skies' research. This article seeks to whet the reader's interest in a field which is now highly interdisciplinary, rather than to treat any topic in great depth View full abstract»

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  • Two by two: the story of the ARC

    Page(s): 254 - 260
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    In the years immediately following the Second World War, there was much activity in both the USA and the UK to develop electronic computers. In this article, the author, then a Fellow at Birkbeck College London, recalls his own work to design a machine using relays-the automatic relay calculator (ARC). This was subsequently developed into a fully electronic computer APE(X)C, a version of which was sold by ICL. A key feature of these machines was the use of a magnetic drum store View full abstract»

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  • 1998 Index

    Page(s): 289
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  • Cut off in its prime: the influence of waveguides on microwave technology

    Page(s): 245 - 253
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    A paper by Lord Rayleigh, published in February 1897, was seminal in establishing the waveguide as a possible transmission medium which was `out of the ordinary' for the time and, in the event, some years ahead of its practical application. The waveguide is now well established as an engineering tool, especially where there is a requirement for high power along with high sensitivity and low loss. The behaviour of waveguides in the below cut-off region, where the attenuation does not become infinite but reaches an asymptotic value dependent on the guide dimensions, is now the basis of a primary standard of attenuation used in standards laboratories throughout the world. Despite the high attenuation, `propagation' in a waveguide in the cut-off mode has attracted interest recently through claims that the group velocity may be of the order of four times the velocity of light View full abstract»

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Aims & Scope

The Engineering Science and Education Journal was published by the IET between 1992 and 2002.

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