| 单词 |
e region |
| 释义 |
E region
E region or E layern (General Physics) a region of the ionosphere, extending from a height of 90 to about 150 kilometres. It reflects radio waves of medium wavelength. Also called: Heaviside layer or Kennelly-Heaviside layer See also ionosphereThesaurus| Noun | 1.E region - a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium lengthE layer, Heaviside layer, Kennelly-Heaviside layerionosphere - the outer region of the Earth's atmosphere; contains a high concentration of free electrons |
E region
E regionThe region of the ionosphere in which the E layer tends to form. The region lies between 60 and 90 miles (100–150 km). The region reflects electromagnetic energy from 100 kHz to 30 MHz and plays an important role in long-distance radio communications. The E layer is subdivided into two or more layers, and these are then designated as E1, E2, etc. Patchy and intermittent clouds of fairly high ionization, known as sporadic E layers, also form in the same general region. See E layer.E region
Synonyms for E regionnoun a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium lengthSynonyms- E layer
- Heaviside layer
- Kennelly-Heaviside layer
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