Bakerian lecture.―The aurora and its spectrum
The beauty of the Polar Aurora, when it is seen in its full glory, has always deeply impressed those who have seen it, and has excited many to search for the true nature and cause of its occurrence. It occurs in both hemispheres, that in the northern being designated as Aurora Borealis , and that in...
Published in: | Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character |
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1928
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Online Access: | http://dx.doi.org/10.1098/rspa.1928.0153 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1928.0153 |
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crroyalsociety:10.1098/rspa.1928.0153 2024-09-30T14:32:35+00:00 Bakerian lecture.―The aurora and its spectrum 1928 http://dx.doi.org/10.1098/rspa.1928.0153 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1928.0153 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character volume 120, issue 785, page 327-357 ISSN 0950-1207 2053-9150 journal-article 1928 crroyalsociety https://doi.org/10.1098/rspa.1928.0153 2024-09-09T06:01:15Z The beauty of the Polar Aurora, when it is seen in its full glory, has always deeply impressed those who have seen it, and has excited many to search for the true nature and cause of its occurrence. It occurs in both hemispheres, that in the northern being designated as Aurora Borealis , and that in the south as Aurora Australis . The frequency of occurrence varies with latitude and is greatest in the two zonal regions that make angles of about 20° with the earth's magnetic axis. Auroral displays are generally accompanied by magnetic storms, and a view commonly held is that both phenomena are due to streams of electrons emitted by the sun. Such streams, Prof. Birkland has shown, must necessarily describe paths on coming under the influence of the earth's magnetic field that follow closely the course of the streamers in an auroral display. The polar aurora appears with varying intensities and in various forms and colours. At times it is seen as a weak, diffuse, formless luminosity; at other times it appears as luminous draperies, bands or arcs, and often only as luminous beams or rays. Article in Journal/Newspaper aurora australis The Royal Society Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character 120 785 327 357 |
institution |
Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
The beauty of the Polar Aurora, when it is seen in its full glory, has always deeply impressed those who have seen it, and has excited many to search for the true nature and cause of its occurrence. It occurs in both hemispheres, that in the northern being designated as Aurora Borealis , and that in the south as Aurora Australis . The frequency of occurrence varies with latitude and is greatest in the two zonal regions that make angles of about 20° with the earth's magnetic axis. Auroral displays are generally accompanied by magnetic storms, and a view commonly held is that both phenomena are due to streams of electrons emitted by the sun. Such streams, Prof. Birkland has shown, must necessarily describe paths on coming under the influence of the earth's magnetic field that follow closely the course of the streamers in an auroral display. The polar aurora appears with varying intensities and in various forms and colours. At times it is seen as a weak, diffuse, formless luminosity; at other times it appears as luminous draperies, bands or arcs, and often only as luminous beams or rays. |
format |
Article in Journal/Newspaper |
title |
Bakerian lecture.―The aurora and its spectrum |
spellingShingle |
Bakerian lecture.―The aurora and its spectrum |
title_short |
Bakerian lecture.―The aurora and its spectrum |
title_full |
Bakerian lecture.―The aurora and its spectrum |
title_fullStr |
Bakerian lecture.―The aurora and its spectrum |
title_full_unstemmed |
Bakerian lecture.―The aurora and its spectrum |
title_sort |
bakerian lecture.―the aurora and its spectrum |
publisher |
The Royal Society |
publishDate |
1928 |
url |
http://dx.doi.org/10.1098/rspa.1928.0153 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1928.0153 |
genre |
aurora australis |
genre_facet |
aurora australis |
op_source |
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character volume 120, issue 785, page 327-357 ISSN 0950-1207 2053-9150 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspa.1928.0153 |
container_title |
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character |
container_volume |
120 |
container_issue |
785 |
container_start_page |
327 |
op_container_end_page |
357 |
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1811636712355397632 |