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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.

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. ...

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...

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. ...

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...

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...