NDLI: Correlation of Long Wave Transatlantic Radio Transmission with Other Factors Affected by Solar Activity

Content Provider	IEEE Xplore Digital Library
Author	Anderson, C.N.
Copyright Year	1913
Abstract	Phenomena usually thought of as being affected by solar activity are: Sun spots, solar constant, earth's magnetic field, atmospheric electricity, auroras, earth currents, and, as has been recently shown, radio transmission. In order to correlate these with each other, the daily character of each must be reduced to some single figure. The factors which lend themselves most easily to quantitative correlation are sun spots, solar constant, earth's magnetic field, daylight radio transmission and night radio transmission. For sun spots, the numbers as prepared by Wolfer are used and for variations in the solar constant, the measurements by Dr. Abbot. Several sets of character figures of the earth's magnetic field were available. Of these, the three figures show too great a contrast between disturbed and undisturbed conditions while the Van Dijk show too little. A set of figures which showed a contrast between the disturbed and undisturbed conditions of the same order of magnitude as that obtained between disturbed and undisturbed radio conditions was devised. This method consisted of obtaining from the hourly averages, the total variation of the horizontal and vertical components of the earth's field. Such a figure is easily computed although better results might be obtained if the variation were taken directly from the magnetogram. The diurnal characteristic of long wave transatlantic radio transmission can be divided into four parts: daylight over entire transmission path, darkness over entire path, and the sunset and sunrise transition periods.
Starting Page	297
Ending Page	347
Page Count	51
File Size	7481628
File Format	PDF
ISSN	07315996
Volume Number	16
Issue Number	3
Language	English
Publisher Date	1928-03-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Earth Sun Magnetic field measurement Telegraphy Magnetic fields Telephony Cities and towns Atmospheric waves Mathematical analysis Inspection
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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