III. Magnetical Observations at Port, &c. A. 1824-25, comprehending observations on the diurnal variation and diurnal intensity of the horizontal needle; also on the dip of the magnetic needle at Woolwich, and at different, within the arctic circle.
The daily variation of the horizontal needle was first observed in London by Mr. Graham, in the year 1722; but in consequence of its small amount, it has always been considered amongst the minor phenomena which the magnetic needle presents. Mr. Barlow , however, having explained a method of encreasi...
Published in: | Philosophical Transactions of the Royal Society of London |
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Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
The Royal Society
1826
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Subjects: | |
Online Access: | http://dx.doi.org/10.1098/rstl.1826.0041 https://royalsocietypublishing.org/doi/pdf/10.1098/rstl.1826.0041 |