appleton : Idioms & Phrases
appleton layer
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noun the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission
F layer; F region.
WordNet
edward appleton
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noun English physicist remembered for his studies of the ionosphere (1892-1966)
Edward Appleton; Appleton.
WordNet
sir edward victor appleton
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noun English physicist remembered for his studies of the ionosphere (1892-1966)
Edward Appleton; Appleton.