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Appleton layer
3 dictionary results for: appleton layer
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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F layer
–noun Physics.
| the highest of the radio-reflective ionospheric layers, beginning at an altitude of ab. 80 mi. (130 km) and consisting of two parts, the lower part (F1 layer) being detectable in the daytime only, the higher (F2 layer or Appleton layer) being constant and constituting the ionospheric layer most favorable for long-range radio communication. |
Origin:
1925–30
1925–30
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Cite This Source
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Cite This Source
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| appleton layer | |
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 |
WordNet® 3.0, © 2006 by Princeton University.
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