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sunspot
[ suhn-spot ]
noun
- one of the relatively dark patches that appear periodically on the surface of the sun and affect terrestrial magnetism and certain other terrestrial phenomena.
sunspot
/ ˈsʌnˌspɒt /
noun
- 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
- informal.a sunny holiday resort
- a small cancerous spot produced by overexposure to the sun
sunspot
/ sŭn′spŏt′ /
- 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 .
Derived Forms
- ˈsunˌspotted, adjective
Other Words From
- sunspotted adjective
- sunspotted·ness noun
Example Sentences
His successors later noticed that sunspots often produce bursts of radiation called solar flares.
This week, the first image of a sunspot from the high-definition Inouye telescope was finally published.
To capture the sunspot, the researchers pointed the telescope’s 13-foot mirror—three times wider than any other solar telescope—towards the central area of the star.
This recent sunspot image was captured on January 28 of this year, and it’s just one part of a bigger series.
The largest solar telescope on Earth has gotten the sharpest glimpse ever of a sunspot.
And Bishop, Colossus, Warpath, Blink, Sunspot, Quiksilver, Stryker and Havoc will all be there too.
For even this great sunspot was but small as compared with the Sun as a whole.
They would not be strictly accurate, because a sunspot could knock all meaning out of any reading beyond two decimal places.
The sunspot cycle has appeared to average 11.2 years in length, and has been called the 11-year cycle.
That is, you cannot connect a particular sunspot group with a particular S-Region.
It means you can only approximately predict the future course of sunspot activity.
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