(of Earth ionosphere)

См. также в других словарях:

• Earth-Ionosphere waveguide — The Earth Ionosphere waveguide refers to the phenomenon in which certain radio waves can propagate in the space between the ground and the boundary of the ionosphere.Because the ionosphere contains charged particles, it can behave as a conductor …   Wikipedia

• Ionosphere — The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner …   Wikipedia

• ionosphere — n. the outer region of the earth s atmosphere, beyond which is the {exosphere}; it contains a high concentration of free electrons and ions, and extends from about 50 miles to about 250 miles above the earth s surface, but the height shows daily… …   The Collaborative International Dictionary of English

• ionosphere — [ī än′ə sfir΄] n. [< ION + O + SPHERE] the outer part of the earth s atmosphere, beginning at an altitude of c. 55 km ( c. 34 mi) and extending to the highest parts of the atmosphere: it contains several regions that consist of a series of… …   English World dictionary

• ionosphere and magnetosphere — ▪ atmospheric science Introduction       regions of Earth s (Earth) atmosphere in which the number of electrically charged particles ions (ion) and electrons (electron) are large enough to affect the propagation of radio waves (electromagnetic… …   Universalium

• Earth's magnetic field — Computer simulation of the Earth s field in a normal period between reversals.[1] The tubes represent magnetic field lines, blue when the field points towards the center and yellow when away. The rotation axis of the Earth is centered and… …   Wikipedia

• earth — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… …   Universalium

• ionosphere — ionospheric /uy on euh sfer ik/, adj. /uy on euh sfear /, n. the region of the earth s atmosphere between the stratosphere and the exosphere, consisting of several ionized layers and extending from about 50 to 250 mi. (80 to 400 km) above the… …   Universalium

• Ionosphere-Thermosphere Storm Probes — Infobox Spacecraft Name = Ionosphere Thermosphere Storm Probes Organization = NASA Mission Type = Two Earth orbiters investigating the ionosphere and thermosphere Number of Observatories = 2 Inclination = 60 degreesThe Ionosphere Thermosphere… …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• ionosphere — The region of the atmosphere, extending from approximately 30 to 250 miles (50 to 400 km), in which there is appreciable ionization. The ionized layers in the atmosphere reflect radio waves, making long wave communications possible over the… …   Aviation dictionary