Abstract
THE study of a monograph on earth currents by Dr. D. Stenquist,1 telegraph engineer, published in 1925 in Stockholm, suggests that telegraphists have it in their power to add much to our knowledge. The early observations by W. H. Barlow and C. V. Walker showed that an intimate connexion exists in England between magnetic storms and disturbances in telegraph lines, and similar observations elsewhere showed this to be a general phenomenon. So much is this the case that the authorities of the Ebro Observatory, Tortosa, accept as their quiet days for the study of the regular diurnal variation of earth currents the international magnetic quiet days selected at De Bilt, provided their records for these days are complete. Further, Messrs. W. J. Peters and C. C. Ennis, of the Carnegie Institution of Washington, have shown that the Ebro earth current data exhibit in a similar way to magnetic data, and to a similar degree, what is known as the 27-day interval, representing, it is believed, the rotation period of the sun's equatorial surface.
Similar content being viewed by others
Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
CHREE, C. Earth Currents and Terrestrial Magnetism. Nature 121, 242 (1928). https://doi.org/10.1038/121242a0
Issue Date:
DOI: https://doi.org/10.1038/121242a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.