james alfred van allen

Van Allen

[van al-uhn]
noun
James Alfred, 1914–2006, U.S. physicist and space scientist.
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Collins
World English Dictionary
Van Allen (væn ˈælən)
 
n
James Alfred. 1914--2006, US physicist, noted for his use of satellites to investigate cosmic radiation in the upper atmosphere

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

Van Allen
name of radiation belts around the Earth (and certain other planets), 1939, from U.S. physicist James A. Van Allen(b.1914), who reported them in 1958.
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica
Encyclopedia

james alfred van allen

American physicist, whose discovery of the Van Allen radiation belts, two zones of radiation encircling Earth, brought about new understanding of cosmic radiation and its effects on Earth.

Learn more about Van Allen, James Alfred with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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