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f2 layer

F layer
F f

Transcription

    • US Pronunciation
    • US IPA
    • [ef too]
    • /ˈɛf ˈtu/
    • US Pronunciation
    • US IPA
    • [ef too]
    • /ˈɛf ˈtu/

Definition of f2 layer words

  • noun f2 layer the highest of the radio-reflective ionospheric layers, beginning at an altitude of about 80 miles (130 km) and consisting of two parts, the lower part (F layer) being detectable in the daytime only, the higher (F layer or Appleton layer) being constant and constituting the ionospheric layer most favorable for long-range radio communication. 1

Information block about the term

Origin of f2 layer

First appearance:

before 1925
One of the 11% newest English words
First recorded in 1925-30

Historical Comparancy

Parts of speech for F2 layer

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation

f2 layer popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 43% of English native speakers know the meaning and use word.
According to our data about 66% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

See also

Matching words

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