Heaviside
hea·vi·side
noun
1.
English physicist and electrical engineer who helped develop telegraphic and telephonic communications; in 1902 (independent of A. E. Kennelly) he suggested the existence of an atmospheric layer that reflects radio waves back to earth (1850-1925)
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WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.