English dictionary
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English noun: F region | |||
| 1. | F region (location) 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 | ||
| Synonyms | Appleton layer, F layer | ||
| Instance hypernym | part, region | ||
| Part meronym | ionosphere | ||
Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk