TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

nucleus : In meteorology, a minute solid particle suspended in the atmosphere. Classification of nuclei is now generally made into "Aitken nuclei" of radius less than 0-2 [microns] "large nuclei"(radius from 0-2 to 1 [micron]) and "giant nuclei"(radius greater than 1 micron).  1, record 1, English, - large%20nucleus

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Les noyaux de condensation sont de dimensions variables : la plupart des noyaux d'Aitken sont très petits (inférieurs à 0,1 [micromètre]); il y a, par ailleurs, les gros noyaux, compris entre 0,1 et 1 [micromètre], et les noyaux géants, supérieurs à 1 [micromètre].  1, record 1, French, - gros%20noyau

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

nucleus : In meteorology, a minute solid particle suspended in the atmosphere. Classification of nuclei is now generally made into "Aitken nuclei" of radius less than 0-2 [microns], "large nuclei"(radius from 0-2 to 1 [micron] and "giant nuclei"(radius greater than 1 micron).  3, record 2, English, - giant%20nucleus

Record number: 2, Textual support number: 1 OBS

The term "nucleus" is slightly more specific than "particle"; but both are correct.  4, record 2, English, - giant%20nucleus

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Les noyaux de condensation sont de dimensions variables : la plupart des noyaux d'Aitken sont très petits (inférieurs à 0,1 [micromètre]; il y a, par ailleurs, les gros noyaux, compris entre 0,1 et 1 [micromètre], et les noyaux géants, supérieurs à 1 [micromètre].  3, record 2, French, - noyau%20g%C3%A9ant

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Núcleo atmosférico de condensación cuyo radio es superior a un metro.  1, record 2, Spanish, - n%C3%BAcleo%20gigante

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

Microscopic atmospheric particle(diameter less than about 4 X 10^-4 mm) which acts as a condensation nucleus in the operation of the Aitken dust counter.  4, record 3, English, - Aitken%20nucleus

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Particule microscopique (de diamètre inférieur à environ 4 X 10^-4 mm) de l'atmosphère agissant comme noyau de condensation dans l'utilisation du pulvimètre d'Aitken.  3, record 3, French, - noyau%20d%27Aitken

Record number: 3, Textual support number: 1 CONT

Les particules inframicroscopiques. Elles constituent le plus petit élément des «aérosols» atmosphériques. Leur taille peut descendre au-dessous de 10 [Angstroms]. On les dénomme souvent particules (ou noyaux) d'Aitken. Leur diamètre moyen est à peine de 300 [Angstroms].  2, record 3, French, - noyau%20d%27Aitken

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Partícula atmosférica microscópica (con diámetro inferior a 4 x 10^-4 mm) que, en un contador de Aitken, actúa como núcleo de condensación.  2, record 3, Spanish, - n%C3%BAcleo%20de%20Aitken

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

An atmospheric ion of relatively large mass and low mobility which is produced by the attachment of a small ion to an Aitken nucleus.  1, record 4, English, - large%20ion

Record number: 4, Textual support number: 1 OBS

The ion density of large ions varies widely, depending upon the degree of atmospheric pollution. Representative low-altitude values might be 1000 per cubic centimeter in clean country air, 10,000 per cubic centimeter in an industrial area, and 100 per cubic centimeter over the oceans.  1, record 4, English, - large%20ion

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 [...] 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». Le rôle des gros ions est capital dans la condensation et par voie de conséquence dans les précipitations.  1, record 4, French, - gros%20ion

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

An instrument developed by John Aitken for determining the dust content of the atmosphere. In operation, a sample of air is mixed, in an expandable chamber, with a larger volume of dust-free air containing water vapor. Upon a sudden expansion, the chamber cools adiabatically below its dewpoint, and droplets form with the dust particles as nuclei (Aitken nuclei). A portion of these droplets settle on a ruled plate in the instrument and are counted with the aid of a microscope.  1, record 5, English, - Aitken%20dust%2Dcounter

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 OBS

"Pulvimètre" n'est pas attesté dans les dictionnaires généraux mais on l'utilise couramment dans les documents techniques.  2, record 5, French, - pulvim%C3%A8tre%20d%27Aitken

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

A condensation nucleus counter... gives the concentration of Aitken particles in the air. Aitken particles are defined as particles in the diameter range 0. 005-0. 5 [micrometers]. This size range contains more than 99 percent of the total number of atmospheric particles. There is a well-known statistical scatter of CNC concentrations....  3, record 6, English, - condensation%20nuclei%20concentration

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

On les appelle noyaux de condensation (parfois, noyaux d'AITKEN), et G. MADELAINE donne le principe de leur mesure (C.N.C.) dans son article. Le tableau 3 indique leur concentration dans certaines conditions. Ils constituent un très bon indicateur de pollution.  1, record 6, French, - concentration%20de%20noyaux%20de%20condensation

Record 6,  Textual support,  Spanish