Abstract
RECENT SUNSPOT AND MAGNETIC “STORM.”—On January 26, the largest magnetic disturbance for five years was recorded by the magnetographs at the Royal Observatory, Greenwich. The disturbance commenced at 16¼., rose to a considerable maximum, and subsided soon after 5h. on the following morning. The greatest range shown during the disturbance by the magnetic needle recording magnetic Declination was one degree. The photographic traces of North Force and Vertical Force also showed considerable deflexions. Press telegrams announced a remarkable display of the aurora borealis seen from Norway and North America on the night of January 26.
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Our Astronomical Column. Nature 117, 208 (1926). https://doi.org/10.1038/117208a0
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DOI: https://doi.org/10.1038/117208a0