Hale, George E. (1919) On the Nature of Sun-Spots. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 95 (668). pp. 234-236. ISSN 1364-5021. doi:10.1098/rspa.1919.0004. https://resolver.caltech.edu/CaltechAUTHORS:20150811-091340905
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Abstract
The researches described in the present paper were undertaken in connection with a more general investigation of the sun, considered as a typical star. The gradual development of the work dates from 1891, when three attacks, along converging lines, were begun by the writer at the Kenwood Observatory. One of these involved a study of the spectra of sun-spots, requiring the development of instruments and methods adequate to record photographically the minute peculiarities of their widened lines. The second was a photographic investigation of the solar atmosphere, rendered possible by the initiation and gradual improvement of the spectroheliograph. A series of laboratory experiments was also undertaken for the purpose of interpreting the phenomena detected in both of these series of researches.
Item Type: | Article | ||||||||||||
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Additional Information: | © 1919 The Royal Society. (Abstract.--Received October 31, 1918.) | ||||||||||||
Issue or Number: | 668 | ||||||||||||
DOI: | 10.1098/rspa.1919.0004 | ||||||||||||
Record Number: | CaltechAUTHORS:20150811-091340905 | ||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150811-091340905 | ||||||||||||
Official Citation: | On the Nature of Sun-Spots Author(s): George E. Hale Source: Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, Vol. 95, No. 668 (Jan. 1, 1919), pp. 234-236 Published by: The Royal Society DOI: http://dx.doi.org/10.1098/rspa.1919.0004 Stable URL: http://www.jstor.org/stable/93789 | ||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
ID Code: | 59379 | ||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||
Deposited By: | George Porter | ||||||||||||
Deposited On: | 11 Aug 2015 16:32 | ||||||||||||
Last Modified: | 10 Nov 2021 22:19 |
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