Appleton layer

Also found in: Thesaurus, Encyclopedia, Wikipedia.

Related to Appleton layer: F layer, Sir Edward Appleton

Appleton layer

(Physical Geography) the F region of the ionosphere

[C20: named after Sir Edward Appleton]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ThesaurusAntonymsRelated WordsSynonymsLegend:

Switch to new thesaurus

Noun

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

F layer, F region

ionosphere - the outer region of the Earth's atmosphere; contains a high concentration of free electrons

Mentioned in ?

References in periodicals archive ?

The two reflecting layers in the ionosphere 90to 110 Km called Heaviside layer (E region) and Appleton layer is 240 Km (Harrison, 1958).