Abstract
DR. GLAZEBROOK has asked me to send you a copy of one or more of the magnetic curves during the late storm, and also of a characteristically “quiet” day. For the latter I send copy of declination October 2–3, 1900, B1, Fig. 2. It is not absolutely quiet—very few days are, if any—and parts show the tiny “magnetic waves” often met with. Here, as usual, there are two days' curves, each with its own base (or time) line on the same sheet. The paper is changed every second day, shortly after 10 a.m. In this quiet day declination curve, 1 cm. of ordinate in the original represents 8′.7, and increasing ordinate answers to increasing westerly declination.
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SUPERINTENDENT OBSERVATORY DEPARTMENT.. The Magnetic Storm of October 31. Nature 69, 56 (1903). https://doi.org/10.1038/069056a0
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DOI: https://doi.org/10.1038/069056a0
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