You can mark you interesting snippets of text that will be available through a unique link in your browser.


condensation

Translation
condensation
—condensational, adj. —condensative, adj.
/kon'den say"sheuhn, -deuhn-/, n.
1. the act of condensing; the state of being condensed.
2. the result of being made more compact or dense.
3. reduction of a book, speech, statement, or the like, to a shorter or terser form; abridgment.
4. a condensed form: Did you read the whole book or just a condensation?
5. a condensed mass.
6. (in nontechnical usage) condensate.
7. the act or process of reducing a gas or vapor to a liquid or solid form.
8. Chem. a reaction between two or more organic molecules leading to the formation of a larger molecule and the elimination of a simple molecule such as water or alcohol.
9. Meteorol. the process by which atmospheric water vapor liquefies to form fog, clouds, or the like, or solidifies to form snow or hail.
10. Psychoanal. the representation of two or more ideas, memories, feelings, or impulses by one word or image, as in a person's humor, accidental slips, or dreams.
11. Physics. the relative amount by which the density of an elastic medium varies from its average value as a sound wave passes through it.
[1595-1605; < LL condensation- (s. of condensatio), equiv. to condensat(us) CONDENSATE + -ion- -ION]

* * *

Formation of a liquid or solid from its vapour.

Condensation usually occurs on a surface that is cooler than the adjacent gas. A substance condenses when the pressure exerted by its vapour exceeds the vapour pressure of its liquid or solid phase at the temperature of the surface where the condensation is to occur. The process causes the release of thermal energy. Condensation occurs on a glass of cold water on a warm, humid day when water vapour in the air condenses to form liquid water on the glass's colder surface. Condensation also accounts for the formation of dew, fog, rain, snow, and clouds.

* * *

▪ phase change
      deposition of a liquid or a solid from its vapour, generally upon a surface that is cooler than the adjacent gas. A substance condenses when the pressure exerted by its vapour exceeds the vapour pressure of the liquid or solid phase of the substance at the temperature of the surface where condensation (condensation nucleus) occurs. Heat is released when a vapour condenses. Unless this heat is removed, the surface temperature will increase until it is equal to that of the surrounding vapour.

      If air were free of tiny particles, called aerosols, condensation would only occur when the air was extremely supersaturated with water vapour. In the atmosphere, however, there is an abundant supply of aerosols, which serve as nuclei, called condensation nuclei, on which water vapour may condense. Some are hygroscopic (moisture-attracting), and condensation begins on them when the relative humidity is less than 100 percent, but other nuclei require some supersaturation before condensation begins.

      In the atmosphere the relative humidity of the air is increased, and condensation results when air temperature is reduced to the dew point or when sufficient water vapour is added to saturate the air. Condensation accounts for the formation of dew, fog, and clouds. For rain to occur, other physical processes are required.

* * *


Universalium. 2010.

Synonyms:

  
Share  

Look at other dictionaries:

  • condensation — * * * condensation [ kɔ̃dɑ̃sasjɔ̃ ] n. f. • 1361; lat. imp. condensatio 1 ♦ Passage d un corps de la phase gazeuse à une des phases condensées, liquide ou solide; action de condenser. Point de condensation (cf. Point de rosée*). ⇒ saturation.… …   Encyclopédie Universelle

  • Condensation — Con den*sa tion, n. [L. condensatio: cf. F. condensation.] 1. The act or process of condensing or of being condensed; the state of being condensed. [1913 Webster] He [Goldsmith] was a great and perhaps an unequaled master of the arts of selection …   The Collaborative International Dictionary of English

  • condensation — 1> конденсация; сгущение; уплотнение; сжижение; Ex: condensation point физ. точка росы; температура конденсации; Ex: condensation trail ав. инверсионный след (самолета) 2> сжатость, краткость (стиля) 3> сокращенный вариант (литературного… …   Новый большой англо-русский словарь

  • condensation — n конденсация drop condensation Англо русский строительный словарь. М.: Русский Язык. С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова. 1995. * * * condensation n конденсация Англо русский строительный словарь …   Англо-русский словарь строительных терминов

  • condensation — noun 1) сгущение, уплотнение, конденсация 2) сжатость (стиля) …   Англо-русский словарь Мюллера

  • condensation — index abstract, adhesion (affixing), brief, capsule, centralization, compendium, congealment, curtailment …   Law dictionary

  • Condensation — For other uses, see Condensation (disambiguation). Water vapour condenses into a liquid after making contact with the surface of a cold bottle …   Wikipedia

  • condensation — 1) конденсация 2) отверждение (синтетической смолы) • air cooled condensation capillary condensation cryogenic condensation differential condensation direct contact condensation dropwise condensation drop condensation electrochemical condensation …   Англо-русский словарь технических терминов

  • Condensation — Pour les articles homonymes, voir Condensation (homonymie). En thermodynamique, la condensation désigne le passage d un corps pur de l état gazeux directement à l état solide, sans passer par l état liquide[1]. Pour la terminologie des… …   Wikipédia en Français

  • condensation — ˌkɔndenˈseɪʃən сущ. 1) сгущение, уплотнение, уменьшение объема the condensation of air in the receiver ≈ сжатие воздуха в ресивере Syn : thickening, increase of density, reduction of volume 2) сжи …   Большой англо-русский и русско-английский словарь

Фильмы