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heaviside layer

 - 6 dictionary results

E layer

 
–noun
the radio-reflective ionospheric layer of maximum electron density, normally found at an altitude between 60 and 75 mi. (100 and 120 km).
Also called Heaviside layer, Kennelly-Heaviside layer.

Origin:
1930–35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To heaviside layer
E layer  
n.  A region of the ionosphere, extending from about 90 to 150 kilometers (55 to 95 miles) above the earth and influencing long-distance communications by strongly reflecting radio waves in the range from one to three megahertz. Also called E region, Heaviside layer, Kennelly-Heaviside layer.
Heav·i·side layer   (hěv'ē-sīd')   
n.  See E layer.

[After Oliver Heaviside (1850-1925), British physicist.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
E layer  
See E region.
Heaviside layer   (hěv'ē-sīd')  Pronunciation Key 
See E region.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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