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Appleton layer

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.03 sec.
Appleton layer
n
(Earth Sciences / Physical Geography) another name for F region (of the ionosphere)
[named after Sir Edward Appleton (1892-1965), English physicist]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.Appleton layer - 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
ionosphere - the outer region of the Earth's atmosphere; contains a high concentration of free electrons


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