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Proceedings of the IRE

Issue 9 • Sept. 1940

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Displaying Results 1 - 16 of 16
  • [Front cover]

    Publication Year: 1940, Page(s): c1
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  • Rochester Fall Meeting

    Publication Year: 1940, Page(s): c2
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  • Table of contents

    Publication Year: 1940, Page(s): nil1
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  • Information about the Society

    Publication Year: 1940, Page(s): nil2
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  • Some Problems of Disk Recording

    Publication Year: 1940, Page(s):389 - 398
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5288 KB)

    The general trend of recent statistics indicates that recordings have become more and more important in the radio Ind home-entertainment field. It is therefore timely to investigate the present status of the art. It is shown that the lack of standardization in the recording characteristics of commercial shellac pressings makes it rather difficult to provide correct equalization for playback. A com... View full abstract»

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  • On the Right- and Left-Handedness of Quartz and Its Relation to Elastic and Other Properties

    Publication Year: 1940, Page(s):399 - 406
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4400 KB)

    The confusion concerning the elastic properties of quartz which exists in the literature of the piezoelectric resonator is pointed out. Emphasis is placed on the accepted definitions of right and left quartz and of right- and left-handed optical rotation, the disregard of which by authors, together with a rather free use of axial systems of their own choosing, sometimes obscurely defined, is respo... View full abstract»

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  • The Generation for Television of Horizontal Synchronizing Pulses from Vertical Pulses by Means of Impulse Excitation

    Publication Year: 1940, Page(s):406 - 409
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2960 KB)

    Impulse excitation is employed to produce horizontal synchronizing pulses for television directly from the vertical pulses. The simple equipment to do this and to produce odd-line interlaced synchronizing are described. View full abstract»

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  • Field Strength of Motorcar Ignition between 40 and 450 Megacycles

    Publication Year: 1940, Page(s):409 - 412
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1408 KB)

    Measurements of motorcar-ignition peak field strength were made on frequencies of 40, 60, 100, 140, 180, 240, and 450 megacycles. Propagation was over Long Island ground and the receiveng antennas were 35 feet high and 100 feet from the road. Under these conditions, the average field strength varied about 2 to 1 over the frequency range. Curves show the maximum field strength versus frequency for ... View full abstract»

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  • A Useful Network Theorem

    Publication Year: 1940, Page(s):413 - 417
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (984 KB)

    A theorem is developed for finding the steady-state voltage between two points 0 and 0' of a network having the following characteristics. Any number of (linear bilateral) impedances meet at the junction 0'. The voltages from 0 to the opposite ends of these impedances are known. These voltages and impedances are all that need be specified about the network. The theory is both simple to remember an... View full abstract»

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  • Determination of the Axial Potential Distribution in Axially Symmetric Electrostatic Fields

    Publication Year: 1940, Page(s):418 - 420
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    It has long been known that the potential distribution in axially symmetric electrostatic fields can be expressed in terms of a Fourier integral. This form of solution is not generally very useful because of the difficulties encountered in evaluating the integral. The present paper shows how this integral can be evaluated for a particular type of potential distribution, and shows how it may be app... View full abstract»

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  • The Ionosphere and Radio Transmission, August, 1940, with Predictions for November, 1940

    Publication Year: 1940, Page(s):421 - 422
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    First Page of the Article
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  • Institute news and radio notes

    Publication Year: 1940, Page(s):423 - 428
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  • Correspondence: Piezoelectric crystals

    Publication Year: 1940, Page(s):428 - 429
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (530 KB)

    In this issue of the PROCEEDINGS there appears an article by Professor Karl S. Van Dyke discussing the various conventions used with regard to quartz crystals and methods for establishing correct orientations in the crystal. He points out the need for standardizing on methods for designating crystals. This is a project in which we have tried to arouse interest without much success (original corres... View full abstract»

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  • Contributors

    Publication Year: 1940, Page(s):429 - 430
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  • Positions open

    Publication Year: 1940, Page(s): xi
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  • Display advertisers

    Publication Year: 1940, Page(s): xii
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Aims & Scope

This Periodical ceased production in 1962. The current retitled publication is Proceedings of the IEEE.

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