Terrestrial Magnetism and Atmospheric Electricity Volume N . 21

Terrestrial Magnetism and Atmospheric Electricity Volume N . 21

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...of the investigations made at Jersey from November 1911 to October 1913. A new instrument, described in the former paper, and which records not only the number but the intensity of the Hertzian disturbances, was employed. Former observations, in which coherers have been used, suggest the idea that the waves arise only as the result of storms; but with the new instrument hardly a day passes without waves being recorded. The author concludes from an examination of the data that, in addition to the powerful disturbances associated with storms, there are disturbances of a more regular nature, showing a definite diurnal variation, and attributable to other causes. In support of this contention he shows the summer and winter diurnal-variation curves for the waves recorded at Jersey and Tortosa (Spain). In spite of the great variation in climatic conditions between the two stations, and of the fact that the data for Jersey represent the means from November 1911 to October 1913. while those for Tortosa represent the means from January 1910 to July 1912, the curves for the corresponding seasons at the two places show a marked similarity. The author also calls attention to a striking similarity between the diurnal-variation curves for the Hertzian waves and for the terrestrialmagnetic declination. In conclusion he suggests that just as the powerful waves caused by storms, and which occur comparatively rarely, have their origin in the electrical discharges in the lower atmosphere, so these disturbances corresponding to quiet days are the result of the more frequent electrical discharges in the rarified regions of the upper atmosphere. W. F. G. S. 1 Paris. C--R. ass. franc, avanc. sci., Congres du Havre. 1914 (314-223). 108 and Atmospheric Electricity Volume...show more

Product details

  • Paperback | 62 pages
  • 189 x 246 x 3mm | 127g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236547241
  • 9781236547248