sunspot

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sun·spot

 (sŭn′spŏt′)
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.

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. (Pathology) Austral a small cancerous spot produced by overexposure to the sun
ˈsunˌspotted adj

sun•spot

(ˈsʌnˌspɒt)

n.
one of the relatively dark patches that appear periodically on the surface of the sun and affect terrestrial magnetism and certain other terrestrial phenomena.
[1805–15]

sun·spot

(sŭn′spŏt′)
Any of the relatively cool dark spots that appear in groups on the surface of the sun. Sunspots are associated with strong magnetic fields.

sunspot


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One of many relatively cool dark spots that appear periodically on the surface of the Sun.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sunspot - a cooler darker spot appearing periodically on the sun's photospheresunspot - a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field
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

sunspot

n. mancha de sol.
References in classic literature ?
"Come, cheer up, old man; there's no use in losing your grip and going back to this child's play merely because this big sunspot is drifting across your shiny new disk.
Sunspots are strong concentrations of magnetic flux at the solar surface.
Sunspots are areas of concentrated magnetic fields.
Valev [20] applied statistical analysis to investigate the correlation between global surface air temperatures and sunspots. However, the method was performed in the time domain rather than the time-frequency space, in which the correlation of some frequency components of two signals can be examined.
In this section, the proposed VMD-FA-BP model is established for the monthly mean of sunspots forecasting.
[they were] concerned that life as we know it would perhaps come to an end." The uneasiness led Reverend Jonathan Fisher of Blue Hill, Maine, to make journal sketches of sunspots, which were thought by some to be the cause of the changing weather.
A solar cycle is a 11 year period where the Sun alternates between two periods: solar maximum - when sunspots are much more frequent on the Sun's surface - and solar minimum - when the Sun's surface is relatively sunspot free.The current cycle started 2008.
The red line in Figure 5 represents the predicted number of sunspots and the blue line represents the practical number of sunspots.
Mary Jane Knox wondered whether planets, moons and other celestial bodies in the solar system might contribute to the formation of sunspots and other solar activity: "Could they be reflecting the sun's rays back on it causing hot spots which might allow the eruption of the magnetic fields?"
Two important measures of the long-term behavior of solar activity are (1) Wolf s relative SSN (also called Zurich SSN but now called the International SSN) and (2) the total corrected area of sunspots (i.e., the measured area of sunspots corrected for foreshortening due to the position of the spots on the solar disk).