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POEIRA COSMICA [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-07-25

English

Subject field(s)
  • Air Pollution
  • Astronomy
DEF

Atmospheric dust originating directly from extra-terrestrial sources (comets, meteors, etc.).

CONT

The larger cosmic dust particles are tiny spherules, rarely more than a tenth of a millimeter across.

OBS

cosmic particle; cosmic dust particle: terms usually used in the plural.

Key term(s)
  • cosmic particles
  • cosmic dust particles
  • cosmic dusts

French

Domaine(s)
  • Pollution de l'air
  • Astronomie
DEF

Poussière atmosphérique provenant directement de sources extra-terrestres (comètes, météorites, etc.)

CONT

Les théories astronomiques mettent en avant une variation de la chaleur reçue du Soleil, soit qu'il y ait modification de la constante solaire, soit qu'il y ait des causes extérieures au Soleil (par exemple des nuages de poussières cosmiques), soit enfin que cette variation soit due aux déviations de l'orbite terrestre.

OBS

Le terme poussière est souvent utilisé comme synonyme de particule. Il possède aussi un sens spécifique où il n'y a plus synonymie : particule solide de taille supérieure au micromètre.

OBS

particule cosmique : terme habituellement utilisé au pluriel.

Key term(s)
  • poussières cosmiques
  • poussières d'origine cosmique
  • particules cosmiques

Spanish

Campo(s) temático(s)
  • Contaminación del aire
  • Astronomía
DEF

Polvo atmosférico de origen directamente extraterrestre (cometas, meteoritos, etc.).

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