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The Direction of Rotation of Sun-Spot Vortices

Hale, George E. (1915) The Direction of Rotation of Sun-Spot Vortices. Proceedings of the National Academy of Sciences of the United States of America, 1 (6). pp. 382-384. ISSN 0027-8424. http://resolver.caltech.edu/CaltechAUTHORS:HALpnas15a

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Abstract

Whirling storms in the earth's atmosphere, from the extensive and moderate cyclone to the small and destructive tornado, follow a well-known law of rotation: right-handed or clockwise in the southern hemisphere and counter-clockwise in the northern. These directions are easily explained by the increasing eastward velocity of the air from pole to equator. As sun-spots are vortex phenomena, analogous in many respects to tornadoes, it is interesting to inquire as to the law of their rotation, since this may throw light on their nature and origin.


Item Type:Article
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http://www.pnas.org/content/1/6.tocPublisherUNSPECIFIED
Additional Information:Copyright © 1915 by the National Academy of Sciences. Read before the Academy, December 8, 1914. Received, April 15, 1915.
Record Number:CaltechAUTHORS:HALpnas15a
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:HALpnas15a
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11706
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:20 Sep 2008 03:37
Last Modified:26 Dec 2012 10:18

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