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SATELLITE (from the Lat. satelles, an...

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Originally appearing in Volume V24, Page 228 of the 1911 Encyclopedia Britannica.
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SATELLITE (from the See also:Lat. satelles, an attendant) , in See also:astronomy, a small opaque See also:body revolving around a See also:planet, as the See also:moon around the See also:earth (see PLANET). In the theory of cubic curves, See also:Arthur See also:Cayley defined the satellite of a given See also:line to be the line joining the three points in which tangents at the intersections of the given (See also:primary) line and See also:curve again meet the curve. SATIN-SPAR, a name given to certain fibrous minerals which exhibit, especially when polished, a soft satiny or silky lustre, and are therefore sometimes used as ornamental stones. Such fibrous minerals occur usually in the See also:form of See also:veins or bands, having the See also:fibres disposed transversely. The most See also:common See also:kind of satin-spar is a See also:white finely-fibrous See also:gypsum not infrequently found in the See also:Keuper marls of See also:Nottinghamshire and See also:Derbyshire, and used for beads, &c. Other kinds of satin-spar consist of See also:calcium carbonate, in the form of either See also:aragonite or See also:calcite, these being distinguished from the fibrous gypsum by greater hardness, and from each other by specific gravity and See also:optical characters. The satin-spar of See also:Alston, See also:Cumberland, is a finely-fibrous calcite occurring in veins in a See also:black shale of the Carboniferous See also:series. Fibrous calcite is known sometimes to See also:German mineralogists as Atlasspath. SATIN-See also:WOOD, a beautiful See also:light-coloured hard wood, having a See also:rich, silky lustre, sometimes finely mottled or grained, the produce of a moderate-sized See also:tree, Chloroxylon Swietenia (natural See also:order Meliaceae), native of See also:India and See also:Ceylon. A similar wood, known under the same name, is obtained in the See also:West Indies, the tree being probably a See also:species of Zanthoxylum (natural order Rutaceae). Satin-wood was in See also:request for rich See also:furniture about the end of the 18th See also:century, the See also:fashion then being to See also:ornament panels of it with painted medallions and floral scrolls and See also:borders. It is used for See also:inlaying and small veneers, in covering the backs of See also:hair and clothes-brushes and in making small articles of turnery.

End of Article: SATELLITE (from the Lat. satelles, an attendant)

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