n., pl., -lae (-lē').
Any of various large bright spots or veined patches on the sun's photosphere, usually near sunspots.
[Latin, small torch, diminutive of fax, fac-, torch.]
facula
| Dictionary: fac·u·la |
(făk'yə-lə)
n., pl., -lae (-lē').
Any of various large bright spots or veined patches on the sun's photosphere, usually near sunspots.
n., pl., -lae (-lē').
Any of various large bright spots or veined patches on the sun's photosphere, usually near sunspots.
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| Wikipedia: Facula |
- For the genus of gossamer-winged butterflies, see Facula (butterfly).
A facula (plural: faculae) is literally a "bright spot." It is used in planetary nomenclature for naming certain surface features of planets and moons, and is also a type of surface phenomenon on the Sun.
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 dissipate over timescales of several minutes. Faculae are produced by concentrations of magnetic field lines.
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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