- sporadic E layer
- noun Date: 1949 a layer of ionization occurring irregularly within the E region of the ionosphere
New Collegiate Dictionary. 2001.
sporadic E layer
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sporadic e layer — noun Usage: usually capitalized E : a layer of ionization occurring irregularly within the E region of the ionosphere at heights of approximately 60 miles above the surface of the earth and occasionally being capable of reflecting radio waves of… … Useful english dictionary
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E region — noun a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length • Syn: ↑Heaviside layer, ↑Kennelly Heaviside layer, ↑E layer • Instance Hypernyms: ↑region, ↑part • Part Holonyms: ↑ … Useful english dictionary
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E region — noun Date: 1930 the part of the ionosphere occurring between about 55 and 80 miles (90 and 130 kilometers) above the surface of the earth and containing the daytime E layer and the sporadic E layer … New Collegiate Dictionary
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