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Siebengebirge

(Encyclopedia)Siebengebirge zēˈbəngəbĭrˌgə [key] [Ger.,=seven mountains], small wooded range of the Rhenish Slate Mts., W Germany. Of volcanic origin, it extends for c.10 mi (16 km) S of Bonn along the Rhine...

Pigalle, Jean Baptiste

(Encyclopedia)Pigalle, Jean Baptiste zhäN bätēstˈ pēgälˈ [key], 1714–85, French sculptor. His skill embraced a wide range, from small works appealing to the taste of the court to large and elaborate tombs....

Vilyui

(Encyclopedia)Vilyui vĭlyo͞oˈē [key], river, c.1,520 mi (2,450 km) long, rising in the central Siberian uplands, E Siberian Russia, in the Sakha Republic, and flowing east through an agricultural area into the ...

Altay

(Encyclopedia)Altay: see Altai, mountain system, Asia. ...

Death Valley

(Encyclopedia)Death Valley, SE Calif. and SW Nev., a deep, arid basin, 140 mi (225 km) long, bordered on the W by the Panamint Range and on the E by the Amargosa Range. In summer the valley has recorded some of the...

radio frequency

(Encyclopedia)radio frequency, range of electromagnetic waves with a frequency or wavelength suitable for communication uses. Some of these waves serve as carriers of the lower-frequency audio waves; others are mod...

Gotthard Tunnel

(Encyclopedia)Gotthard Tunnel: see Saint Gotthard, mountain group. ...

Fujiyama

(Encyclopedia)Fujiyama, mountain, Japan: see Fuji, Mount. ...

Tien Shan

(Encyclopedia)Tien Shan, mountain system: see Tian Shan. ...

Clingmans Dome

(Encyclopedia)Clingmans Dome, mountain, Tenn.: see Great Smoky Mountains. ...