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v. t. e. Sunspots are temporary spots on the Sun's surface that are darker than the surrounding area. 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. [2] Their number varies according to the ...
Hyperpigmentation can be diffuse or focal, affecting such areas as the face and the back of the hands. Melanin is produced by melanocytes at the lower layer of the epidermis. Melanin is a class of pigment responsible for producing color in the body in places such as the eyes, skin, and hair. The process of melanin synthesis (melanogenesis ...
Hyperpigmentation refers to spots or patches on the skin that are darker than the surrounding skin. It can occur anywhere on the body but is most common on the face. Sun exposure, hormonal changes ...
The Great Dark Spot (also known as GDS-89, for Great Dark Spot, 1989) was one of a series of dark spots on Neptune similar in appearance to Jupiter 's Great Red Spot. In 1989, GDS-89 was the first Great Dark Spot on Neptune to be observed by NASA 's Voyager 2 space probe. Like Jupiter's spot, the Great Dark Spots are anticyclonic storms.
Some of the many variations of ermine spots found in heraldry over the centuries Ermine fur, from the robes of Peter I of Serbia. Ermine (/ ˈ ɜːr m ɪ n /) in heraldry is a fur, a type of tincture, consisting of a white background with a pattern of black shapes representing the winter coat of the stoat (a species of weasel with white fur and a black-tipped tail).
Liver spots (also known as age spot, solar lentigo, [1] " lentigo senilis ", [1]: 686 " old age spot ", [2] " senile freckle ") [2] are blemishes on the skin associated with aging [3] and exposure to ultraviolet radiation from the sun. [4] They range in color from light brown [5] to red or black and are located in areas most often exposed to ...