sunspot


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Related to sunspot: Sunspot cycle

sunspot

Dermatology
(1) Actinic keratosis, see there.
(2) Actinic lentigo, see there.
 
Meteorology
A region of intense magnetic activity on the sun’s surface resulting in a local reduction in convection and temperature, which appears are dark spots.
References in periodicals archive ?
We are saying only that without contradicting the laws of physics, first, that the photospheric layer might possess a brilliance greater than that of the internal nucleus; second, that what we call "nucleus" absolutely does not need to be imagined either solid or liquid, but might even be gaseous alone, but more dense; third, that in spite of the proximity of the photospheric layer, it might have not only a different light, but also a different temperature; and fourth, that the appearances of the different shapes of the sunspots absolutely rule out cloud-like structures, and we see nothing in the sunspots that has sufficient analogies with the way in which our clouds are formed, or the changes through which they go.
Instead, we believe these outbreaks are caused by particles in the stratosphere beign brought down to the Earth's surface by microwaves during peaks of solar activity, such as sunspots.
The leading and following penumbral sunspots of the group were quite irregular with several small umbrae within each sunspot.
It shows only a few sunspots and this has led the space agency to ask questions.
After arriving in Florida, he developed unsightly and itchy sunspots caused by the Tinea Versicolor fungus.
While these differences are too small to make prediction possible for any single active region, the signals were visible for small and large (future) active regions alike, thus providing insight into a key piece of the sunspot formation process.
By Feb 11 the group had reduced further to a small Hrx sunspot approaching the NW limb.
Despite $850,000 in financing raised over three rounds, the last SUNSPOT QuickGreen Cuisine closed in December 1996.
Sunspot numbers are expected to fall by 60 per cent from around 80 per month to 35.
Pick up the new Sunspot, underground shit Underground shit is talong over 'cause these motherfuckers are really rippin' it instead of just talking a bunch of bullshit that fools ain't ever gonna do.
The current sunspot cycle will peak late this month, this expert said.
THIS is day two of our holiday competition courtesy of Sunspot Tours.