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facula

Translation
facula
—facular, adj.
/fak"yeuh leuh/, n., pl. faculae /-lee'/. Astron.
an irregular, unusually bright patch on the sun's surface.
[1700-10; < L: little torch, equiv. to fac- (s. of fax) torch + -ula -ULE]

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      in astronomy, bright granular structure on the Sun's surface that is slightly hotter or cooler than the surrounding photosphere. A sunspot always has an associated facula, though faculae may exist apart from such spots. Faculae are visible in ordinary white light near the Sun's limb (apparent edge), where the photospheric background is dimmer than near the centre of the disk. The extensions of faculae up into the chromosphere become visible over the entire disk in spectroheliograms taken at the wavelengths of hydrogen or ionized calcium vapour. When seen thus away from the limb, they are called chromospheric faculae or plages.

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Universalium. 2010.

Look at other dictionaries:

  • facula — facula, ae, f. (Demin. v. fax), die Leuchte, Fackel, der als Fackel dienende Span, Cato u.a.: facula ardens, Augustin. – im Bilde, quam tibi Fortuna faculam lucrifica adlucere volt, Plaut. Pers. 515 …   Ausführliches lateinisch-deutsches Handwörterbuch

  • facula — 1> лат. астр. факел …   Новый большой англо-русский словарь

  • facula — noun 1. a bright spot on a planet • Hypernyms: ↑spot, ↑speckle, ↑dapple, ↑patch, ↑fleck, ↑maculation 2. a large bright spot on the sun s photosphere occurring most frequently in the vicinity of sunspots • Hypernyms: ↑ …   Useful english dictionary

  • Facula — Sonnenfackeln, auch als Facula (lat facula = kleine Fackel) bezeichnet, sind Gebilde mit erhöhter Helligkeit und Temperatur auf der Sonne. Sie befinden sich typischerweise in der Nähe der Sonnenflecken und breiten sich flächig und in langen… …   Deutsch Wikipedia

  • Facula — For the genus of gossamer winged butterflies, see Facula (butterfly)..Solar faculae are bright spots that form in the canyons between solar granules, short lived convection cells several thousand kilometers across that constantly form and… …   Wikipedia

  • Facula — Une facula (pluriel: faculae) ou facule (pluriel: facules) est littéralement un « point lumineux ». Ce terme est utilisé dans la nomenclature planétaire pour nommer certaines caractéristiques géomorphologiques des surfaces solides des… …   Wikipédia en Français

  • facula —     Facula, Diminutiuum, pen. corr. Propert. Petit flambeau …   Dictionarium latinogallicum de Robert Estienne

  • facula — мн. lae; лат.; астр. факел (латинское) (астрономия) факел …   Большой англо-русский и русско-английский словарь

  • facula — noun (plural faculae) Etymology: New Latin, from Latin, diminutive of fac , fax torch Date: 1706 any of the bright regions of the sun s photosphere seen most easily near the sun s edge …   New Collegiate Dictionary