heterosphere


heterosphere
The upper part of the atmosphere, above about sixty miles, in which there is great variation in its composition.
See Also: homosphere

Wikipedia foundation.

Look at other dictionaries:

  • hétérosphère — ● hétérosphère nom féminin Zone de l atmosphère d une planète située au dessus de la turbopause, dans laquelle les constituants principaux se stratifient sous l influence du champ de gravitation. hétérosphère [eteʀosfɛʀ] n. f. ÉTYM. V. 1900; de… …   Encyclopédie Universelle

  • heterosphere — [het′ər ō sfir΄] n. the upper of two divisions of the earth s atmosphere, above c. 70 km (43 mi), characterized by variation in its component gases: cf. HOMOSPHERE * * * …   Universalium

  • heterosphere — [het′ər ō sfir΄] n. the upper of two divisions of the earth s atmosphere, above c. 70 km (43 mi), characterized by variation in its component gases: cf. HOMOSPHERE …   English World dictionary

  • heterosphere — heterosfera statusas T sritis ekologija ir aplinkotyra apibrėžtis Žemės atmosfera, esanti aukščiau kaip 100 km (virš homosferos), kur oro sudėtis labai pakitusi dėl molekulių disociacijos. atitikmenys: angl. heterosphere vok. Heterosphäre, f rus …   Ekologijos terminų aiškinamasis žodynas

  • heterosphere — The upper portion of a two part division of the atmosphere according to the general homogeneity of atmospheric composition; the layer above the homosphere. The hetero sphere is characterized by variation in the composition and the mean molecular… …   Aviation dictionary

  • heterosphere — /ˈhɛtərəsfɪə/ (say hetuhruhsfear) noun the earth s atmosphere above the altitude of 80 km, characterised by a composition that varies with altitude, with higher mass constituents such as oxygen and nitrogen diminishing quickly and leaving lighter …   Australian English dictionary

  • AÉRONOMIE — L’aéronomie a pour objet l’étude des régions atmosphériques où les phénomènes de dissociation et d’ionisation sont importants. Cette définition s’applique aussi bien à l’atmosphère terrestre qu’aux atmosphères planétaires. Le mot aéronomie fut… …   Encyclopédie Universelle

  • Earth's atmosphere — ppmvThe composition figures above are by volume fraction (V%), which for ideal gases is equal to mole fraction (that is, the fraction of total molecules). Although the atmosphere is not an ideal gas, nonetheless the atmosphere behaves enough like …   Wikipedia

  • Atmosphere of Earth — Air redirects here. For other uses, see Air (disambiguation). Qualities of air redirects here. It is not to be confused with Air quality …   Wikipedia

  • atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …   Universalium


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.