English dictionary

appleton layer meaning and definition

Definition and meaning of appleton layer at MeaningMonkey.org. appleton layer meaning and definition in the English Dictionary.

APPLETON LAYER noun

Definition of Appleton layer (noun)

  1. 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
Source: Princeton University Wordnet

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