A comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at Treurenburgh Bay in Spitsbergen
The observations made by the author at Port Bowen in 1825, on the diurnal changes of magnetic intensity taking place in the dipping- and horizontal-needles, appeared to indicate a rotatory motion of the polarizing axis of the earth, depending on the relative position of the sun, as the cause of thes...
Published in: | Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London |
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Language: | English |
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The Royal Society
1833
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Online Access: | http://dx.doi.org/10.1098/rspl.1815.0343 https://royalsocietypublishing.org/doi/pdf/10.1098/rspl.1815.0343 |
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crroyalsociety:10.1098/rspl.1815.0343 2024-06-02T08:14:55+00:00 A comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at Treurenburgh Bay in Spitsbergen 1833 http://dx.doi.org/10.1098/rspl.1815.0343 https://royalsocietypublishing.org/doi/pdf/10.1098/rspl.1815.0343 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London volume 2, page 344-345 ISSN 0365-5695 2053-9142 journal-article 1833 crroyalsociety https://doi.org/10.1098/rspl.1815.0343 2024-05-07T14:16:22Z The observations made by the author at Port Bowen in 1825, on the diurnal changes of magnetic intensity taking place in the dipping- and horizontal-needles, appeared to indicate a rotatory motion of the polarizing axis of the earth, depending on the relative position of the sun, as the cause of these changes. By Capt. Foster’s remaining at Spitzbergen, during the late Northern Voyage of Discovery, a favourable opportunity was afforded him of prosecuting this inquiry. Instead of making observations with a single needle, variously suspended, as had been done at Port Bowen, two were employed,— the one adjusted as a dipping-needle, and the other suspended horizontally. The relation between the simultaneous intensities of the two needles could thus be ascertained, and inferences deduced relative to the question whether a diurnal variation in the dip existed as one of the causes of the observed phenomena, or whether, the dip remaining constant, they were occasioned by a change in the intensity. The dipping-needle used was one belonging to the Board of Longitude, and made by Dollond. Both this and the horizontal-needle were made in the form of parallelopipedons, each 6 inches long, 0·4 broad, and 0·05 thick. The experiments were continued from the 30th of July to the 9th of August; and were so arranged, that in the course of two days an observation was made every hour in the four-and-twenty; that is, part of them in one day and another part in the other day. Article in Journal/Newspaper Spitzbergen Spitsbergen The Royal Society Port Bowen ENVELOPE(-88.967,-88.967,73.218,73.218) Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London 2 344 345 |
institution |
Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
The observations made by the author at Port Bowen in 1825, on the diurnal changes of magnetic intensity taking place in the dipping- and horizontal-needles, appeared to indicate a rotatory motion of the polarizing axis of the earth, depending on the relative position of the sun, as the cause of these changes. By Capt. Foster’s remaining at Spitzbergen, during the late Northern Voyage of Discovery, a favourable opportunity was afforded him of prosecuting this inquiry. Instead of making observations with a single needle, variously suspended, as had been done at Port Bowen, two were employed,— the one adjusted as a dipping-needle, and the other suspended horizontally. The relation between the simultaneous intensities of the two needles could thus be ascertained, and inferences deduced relative to the question whether a diurnal variation in the dip existed as one of the causes of the observed phenomena, or whether, the dip remaining constant, they were occasioned by a change in the intensity. The dipping-needle used was one belonging to the Board of Longitude, and made by Dollond. Both this and the horizontal-needle were made in the form of parallelopipedons, each 6 inches long, 0·4 broad, and 0·05 thick. The experiments were continued from the 30th of July to the 9th of August; and were so arranged, that in the course of two days an observation was made every hour in the four-and-twenty; that is, part of them in one day and another part in the other day. |
format |
Article in Journal/Newspaper |
title |
A comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at Treurenburgh Bay in Spitsbergen |
spellingShingle |
A comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at Treurenburgh Bay in Spitsbergen |
title_short |
A comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at Treurenburgh Bay in Spitsbergen |
title_full |
A comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at Treurenburgh Bay in Spitsbergen |
title_fullStr |
A comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at Treurenburgh Bay in Spitsbergen |
title_full_unstemmed |
A comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at Treurenburgh Bay in Spitsbergen |
title_sort |
comparison of the changes of magnetic intensity throughout the day in the dipping and horizontal needles, at treurenburgh bay in spitsbergen |
publisher |
The Royal Society |
publishDate |
1833 |
url |
http://dx.doi.org/10.1098/rspl.1815.0343 https://royalsocietypublishing.org/doi/pdf/10.1098/rspl.1815.0343 |
long_lat |
ENVELOPE(-88.967,-88.967,73.218,73.218) |
geographic |
Port Bowen |
geographic_facet |
Port Bowen |
genre |
Spitzbergen Spitsbergen |
genre_facet |
Spitzbergen Spitsbergen |
op_source |
Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London volume 2, page 344-345 ISSN 0365-5695 2053-9142 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspl.1815.0343 |
container_title |
Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London |
container_volume |
2 |
container_start_page |
344 |
op_container_end_page |
345 |
_version_ |
1800738923130912768 |