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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A condensation nucleus of a highly hygroscopic nature produced by partial or complete desiccation of particles of sea spray or of sea-water droplets derived from breaking bubbles.  4, record 1, English, - sea%2Dsalt%20nucleus

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Noyau hygroscopique provenant de l'évaporation des embruns des mers.  3, record 1, French, - noyau%20salin

Record number: 1, Textual support number: 1 OBS

Seuls les embruns marins peuvent constituer une source appréciable de noyaux de condensation de sel dans l'atmosphère terrestre.  4, record 1, French, - noyau%20salin

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Núcleo higroscópico resultante de la evaporación de rociones.  1, record 1, Spanish, - n%C3%BAcleo%20salino%20marino

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A nucleus whose aqueous solution has an equilibrium vapour pressure lower than that of pure water.  2, record 2, English, - hygroscopic%20nucleus

Record number: 2, Textual support number: 1 CONT

The exact form taken by hygroscopic nuclei is most frequently that of droplets of solution. It was established by Lord Kelvin that the vapour pressure over the surface of a water drop in equilibrium with its surroundings is greater than that over a plane water surface. ... The vapour pressure over the surface of a solution is always less than that over pure water at the same temperature. For this reason, a solution is hygroscopic, and absorbs water vapour from the surrounding air, becoming diluted in the process. From this it follows that nuclei in the form of droplets of solution may be expected to be satisfactory condensation kerns. When particles of hygroscopic substances are exposed to sufficiently damp air, they become droplets of solution.  3, record 2, English, - hygroscopic%20nucleus

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Noyau dont la solution aqueuse a une pression de vapeur en équilibre plus basse que celle de l'eau pure.  2, record 2, French, - noyau%20hygroscopique

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Núcleo cuya solución acuosa tiene una presión de vapor en equilibrio más baja que la del agua pura.  2, record 2, Spanish, - n%C3%BAcleo%20higrosc%C3%B3pico

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

Small solid particles around which water condensates (cloud formation)  2, record 3, English, - hygroscopic%20nucleus

Record number: 3, Textual support number: 1 CONT

Condensation on hygroscopic nuclei may begin at a relative humidity much lower than 100 per cent (about 75 per cent for sodium chloride); while on so-called non-hygroscopic nuclei, which merely furnish sufficiently large (by molecular standards) wettable surfaces, relative humidities of nearly 100 per cent are required.  3, record 3, English, - hygroscopic%20nucleus

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Noyau de condensation, constitué par des solutions aqueuses de sels (chlorures de magnésium, de sodium, de calcium) ou d'acide (sulfurique, nitreux), intervenant dans la genèse des pluies.  2, record 3, French, - noyau%20hygroscopique

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

condensation nucleus. A particle on which condensation of water vapor begins in the free atmosphere, where it invariably takes place on hygroscopic dust or hygroscopic gases. The common sources of such dust and gases are sea salt, products of combustion, and dust blown from the earth's surface.  1, record 4, English, - hygroscopic%20dust

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Ces noyaux de condensation comprennent d'une part des "noyaux neutres" - poussières d'origines diverses, cendres volcaniques, débris végétaux (pollens), petites particules hygroscopiques de sel marin ... - qui sont surtout abondants dans les deux ou trois premiers kilomètres de l'atmosphère, et d'autre part des particules électrisées, les ions, présents partout, qui s'unissent aux noyaux neutres pour former des "gros ions".  1, record 4, French, - particule%20hygroscopique

Record number: 4, Textual support number: 1 OBS

Dans son sens général le terme "poussière" est synonyme de "particule". Dans son sens spécifique, il désigne une particule solide de dimension supérieure à un micron.  2, record 4, French, - particule%20hygroscopique

Record 4,  Textual support,  Spanish