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    Naturevolume 120page166 (1927) | Download Citation

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    RECENT MAGNETIC DISTURBANCE.—A considerable magnetic disturbance, lasting about 9 hours, was registered July 21 and 22 at Greenwich and at Abing Surrey. The disturbance, which cona-suddenly at 21h on July 21, reached its gjeutest intensity between 2h and 5h on the following morning and died away rapidly soon after 6h. The excursion shown by the declination magnet amounted to fully one degree. The disturbance was also well shown by the vertical force magnetometer.

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    https://doi.org/10.1038/120166a0

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