sunspot (redirected from Penumbra (Sun))

sun·spot  (snspt)

n.

Any of the relatively cool dark spots appearing periodically in groups on the surface of the sun that are associated with strong magnetic fields.

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sunspot [ˈsʌnˌspɒt]

n

1. (Astronomy) any of the dark cool patches, with a diameter of up to several thousand kilometres, that appear on the surface of the sun and last about a week. They occur in approximately 11-year cycles and possess a strong magnetic field

2. Informal a sunny holiday resort

3. (Medicine / Pathology) Austral a small cancerous spot produced by overexposure to the sun

sunspotted  adj

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sunspot  (snspt)

Any of the dark, irregular spots that usually appear in groups on the surface of the Sun (its photosphere), lasting from a few days to several weeks or more. Sunspots appear dark because they are cooler, by up to 1,500°K, than the surrounding photosphere. They are associated with strong magnetic fields and solar magnetic storms moving in a vortex pattern, similar to a tornado on Earth. The number of sunspots waxes and wanes over an 11-year period; at maximum activity there are often increased numbers of solar flares.

Thesaurus

Noun

1.

sunspot - a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field macula maculation, patch, speckle, dapple, fleck, spot - a small contrasting part of something; "a bald spot"; "a leopard's spots"; "a patch of clouds"; "patches of thin ice"; "a fleck of red"

Translations

sunspot [ˈsʌnspɒt] N

1. (= resort) centro turístico muy soleado

2. (Astron) → mancha f solar

sunspot [ˈsʌnspɒt] n (on the sun's surface) → tache f solaire

sunspot [ˈsʌnˌspɒt] n (Astron) → macchia solare