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infrared radiation

(Encyclopedia)infrared radiation, electromagnetic radiation having a wavelength in the range from c.75 × 10−6 cm to c.100,000 × 10−6 cm (0.000075–0.1 cm). Infrared rays thus occupy that part of the electrom...

Lhasa

(Encyclopedia)Lhasa or Lasa lä-sŭ [key], city (1994 est. pop. 118,000), capital of Tibet Autonomous Region, SW China. It is on a tributary of the Yarlung Zangbo (Brahmaputra) at an altitude of c.11,800 ft (3,600 ...

radio beacon

(Encyclopedia)radio beacon: see radio range.

radio compass

(Encyclopedia)radio compass: see radio range.

Ancohuma

(Encyclopedia)Ancohuma ängkō-o͞oˈmä [key], mountain, Bolivia: see Illampú. ...

Flinders Ranges

(Encyclopedia)Flinders Ranges, mountain chain, extending 260 mi (418 km) between Lake Torrens and Lake Frome, South Australia state, Australia; rises to 3,900 ft (1,189 m) at St. Mary's Peak. Uranium and copper are...

Moriah

(Encyclopedia)Moriah mōrīˈə [key], in the Bible, land in which the mountain where Abraham was to sacrifice Isaac was located. It has been identified by some with Mt. Moriah. ...

Carrantuohill

(Encyclopedia)Carrantuohill kăˌrənto͞oˈəl [key], mountain, 3,414 ft (1,041 m) high, Co. Kerry, SW Republic of Ireland, in Macgillicuddy's Reeks; highest peak in Ireland. ...

Hari Rud

(Encyclopedia)Hari Rud häˈrē ro͞od [key], river, c.700 mi (1,130 km) long, rising in the Kuh-e Baba range, central Afghanistan, and flowing west and then north into the steppes S of the Kara Kum desert in Turkm...

Lena

(Encyclopedia)Lena lēˈnə, Rus. lyĕˈnə [key], river, easternmost of the great rivers of Siberia, c.2,670 mi (4,300 km) long, rising near Lake Baykal, SE Siberian Russia. It flows northeast, then north along th...