On the variations of the daily mean horizontal force of the Earth's magnetism produced by the sun's rotation and the moon's synodical and tropical revolutions | Zendy

John Allan Broun | Zendy

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On the variations of the daily mean horizontal force of the Earth's magnetism produced by the sun's rotation and the moon's synodical and tropical revolutions

Author(s) -

John Allan Broun

Publication year - 1876

Publication title -

proceedings of the royal society of london

Language(s) - English

Resource type - Journals

eISSN - 2053-9126

pISSN - 0370-1662

DOI - 10.1098/rspl.1875.0027

Subject(s) - rotation (mathematics) , geodesy , amplitude , earth's rotation , physics , magnetism , geophysics , geology , mathematics , geometry , condensed matter physics , optics

The variations of daily mean horizontal force in the years 1844 and 1845 showed several well-marked oscillations, having periods of from 20 to 30 days, and amplitudes, in some cases, of more than one thousandth of the whole magnetic force. These oscillations were first attributed to lunar action; afterwards they were found more probably due to the sun’s rotation on his axis.

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