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An attempt to measure the free electricity in the sun's atmosphere

Hale, George E. and Babcock, Harold D. (1915) An attempt to measure the free electricity in the sun's atmosphere. Proceedings of the National Academy of Sciences of the United States of America, 1 (3). pp. 123-127. ISSN 0027-8424. http://resolver.caltech.edu/CaltechAUTHORS:HALpnas15c

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Abstract

We have the strongest of reasons to infer the existence of free electricity in the sun. At high temperatures in the laboratory carbon and other elements emit great numbers of negatively charged particles, while friction, collision and exposure to ultra-violet light may be mentioned among various other agencies capable of producing free electrons under solar conditions. On the other hand, the presence of intense magnetic fields in sun-spots points to a marked preponderance of negative electrons whirling in the spot vortex. Thus, without adducing further evidence, we find that both laboratory results and solar phenomena indicate the presence of free electricity in various parts of the solar atmosphere. [1]


Item Type:Article
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Additional Information:Copyright © 1915 by the National Academy of Sciences. Presented to the Academy, January 16, 1915.
Record Number:CaltechAUTHORS:HALpnas15c
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:HALpnas15c
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11705
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:20 Sep 2008 03:32
Last Modified:26 Dec 2012 10:18

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