Definitions for sunspot
ˈsʌnˌspɒtsunspot

Princeton's WordNetRate this definition:0.0 / 0 votes

1. sunspot, maculanoun

   a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field

WiktionaryRate this definition:5.0 / 1 vote

1. sunspotnoun

   A region on the sun's surface with a lower temperature than its surroundings and intense magnetic activity.

WikipediaRate this definition:0.0 / 0 votes

1. Sunspot

   Sunspots are phenomena on the Sun's photosphere that appear as temporary spots that are darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection. Sunspots appear within active regions, usually in pairs of opposite magnetic polarity. Their number varies according to the approximately 11-year solar cycle. Individual sunspots or groups of sunspots may last anywhere from a few days to a few months, but eventually decay. Sunspots expand and contract as they move across the surface of the Sun, with diameters ranging from 16 km (10 mi) to 160,000 km (100,000 mi). Larger sunspots can be visible from Earth without the aid of a telescope. They may travel at relative speeds, or proper motions, of a few hundred meters per second when they first emerge. Indicating intense magnetic activity, sunspots accompany other active region phenomena such as coronal loops, prominences, and reconnection events. Most solar flares and coronal mass ejections originate in these magnetically active regions around visible sunspot groupings. Similar phenomena indirectly observed on stars other than the Sun are commonly called starspots, and both light and dark spots have been measured.

ChatGPTRate this definition:0.0 / 0 votes

1. sunspot

   A sunspot is a dark area that appears on the surface of the sun due to its temperature being lower than the surrounding areas. These spots often appear in pairs, are temporary, and typically last for a few days to several months. They are associated with very strong magnetic fields and are the regions of the sun where solar flares and solar storms usually originate. Their quantity seems to follow an 11-year cycle, known as the solar cycle.

WikidataRate this definition:0.0 / 0 votes

1. Sunspot

   Sunspots are temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. They are caused by intense magnetic activity, which inhibits convection by an effect comparable to the eddy current brake, forming areas of reduced surface temperature. They usually appear as pairs, with each sunspot having the opposite magnetic pole than the other. Although they are at temperatures of roughly 3000–4500 K, the contrast with the surrounding material at about 5,780 K leaves them clearly visible as dark spots, as the luminous intensity of a heated black body is a function of temperature to the fourth power. If the sunspot were isolated from the surrounding photosphere it would be brighter than the Moon. Sunspots expand and contract as they move across the surface of the Sun and can be as small as 16 kilometers and as large as 160,000 kilometers in diameter, making the larger ones visible from Earth without the aid of a telescope. They may also travel at relative speeds of a few hundred meters per second when they first emerge onto the solar photosphere.

Matched Categories

1. • Spot

Usage in printed sourcesFrom: 

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Anagrams for sunspot »

1. unstops

How to pronounce sunspot?

1. Alex

   US English

   David

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   Mark

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   Daniel

   British

   Libby

   British

   Mia

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   Karen

   Australian

   Hayley

   Australian

   Natasha

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   Veena

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   Priya

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   Neerja

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   Zira

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   Oliver

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   Wendy

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   Fred

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   Tessa

   South African

How to say sunspot in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of sunspot in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of sunspot in Pythagorean Numerology is: 7

Examples of sunspot in a Sentence

1. Bill Murtagh:

   These sunspot groups can persist for weeks or even months, so we want to see if it returns two weeks later.

2. Jay Pasachoff:

   Every eclipse is different because the Sun goes through an 11 year sunspot cycle and there are big eruptions that come out of the sun – some of which hit the earth and can zap billion dollar satellites, we want to know about these eruptions and how fast they go and how to predict them.

3. Otero County:

   We’ve got people up there( at Sunspot) that requested us to standby while they evacuate it. Nobody would really elaborate on any of the circumstances as to why. The FBI were up there. What their purpose was nobody will say. but for The FBI to get involved that quick and be so secretive about The FBI, there was a lot of stuff going on up there.

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=sunspot
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Sunspot
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Sunspot
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=sunspot
6. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=sunspot