Heaviside layer

A layer of ionized particles that surrounds the earth. The layer, also called the E layer, has ionization of around 106 free electrons. The layer is found at a height of around 60 to 90 miles (100-150 km), but its height varies according to the seasons and during the day and at night. The Heaviside layer reflects relatively long, low-frequency radio waves ranging from 100 kHz to 20 MHz. Also called the Kennelly-Heaviside layer and the E region of the atmosphere.

Aviation dictionary. 2014.

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  • Heaviside layer — [hev′ē sīd΄] n. 〚after O. Heaviside (1850 1925), Eng physicist〛 E LAYER * * * …   Universalium

  • Heaviside layer — [hev′ē sīd΄] n. [after O. Heaviside (1850 1925), Eng physicist] E LAYER …   English World dictionary

  • Heaviside layer — /ˈhɛvisaɪd leɪə/ (say heveesuyd layuh) noun the lower region, or regions, of the ionosphere chiefly responsible for the reflection of radio waves of certain frequencies, thus making long distance radio communication possible. Also, E layer,… …   Australian English dictionary

  • Heaviside layer — Hevisaido sluoksnis statusas T sritis fizika atitikmenys: angl. Heaviside layer vok. Heaviside Schicht, f rus. слой Хевисайда, m pranc. couche d’Heaviside, f …   Fizikos terminų žodynas

  • Heaviside layer — (also Heaviside–Kennelly layer) noun another name for E layer. Origin early 20th cent.: named after the English physicist Oliver Heaviside and the American engineer Arthur E. Kennelly …   English new terms dictionary

  • Heaviside layer — n. (in full Heaviside Kennelly layer) = E LAYER. Etymology: O. Heaviside, Engl. physicist d. 1925, and A. E. Kennelly, US physicist d. 1939 …   Useful english dictionary

  • Heaviside layer. — See E layer. [1910 15; named after O. HEAVISIDE] * * * …   Universalium

  • Heaviside layer. — See E layer. [1910 15; named after O. HEAVISIDE] …   Useful english dictionary

  • Heaviside layer — noun Etymology: Oliver Heaviside Date: 1912 ionosphere …   New Collegiate Dictionary

  • Kennelly-Heaviside layer — The Kennelly Heaviside layer, also known as the E region or simply the Heaviside layer, is a layer of ionised gas occurring at 90 ndash;150 km above the ground mdash; one of several layers in the Earth s ionosphere. It reflects medium frequency… …   Wikipedia

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