• word of the day

    appleton layer

    appleton layer - Dictionary definition and meaning for word appleton layer

    Definition
    (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
    Synonyms : f layer , f region

Word used in video below:
text: FIRST, THERE'S A LAYER OF LADYFINGERS
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