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Salinas Grandes

(Encyclopedia)Salinas Grandes sälēˈnäs gränˈdās [key], salt desert, c.3,200 sq mi (8,290 sq km), in Córdoba and Santiago del Estero provs., N Argentina. The Córdoba-Tucumán RR crosses the desert. Sodium a...

San Fernando, city, Spain

(Encyclopedia)San Fernando sän fārnänˈdō [key], city (1990 pop. 83,923), Cádiz prov., S Spain, in Andalusia. An Atlantic port, it has a naval academy and arsenal, naval workshops, and an observatory. Salt is ...

Sevier

(Encyclopedia)Sevier, river, c.280 mi (450 km) long, formed in SW Utah by the junction of Panguitch Creek and Assay Creek. It flows northward through canyons, then leaves the mountains and flows SW through the Sevi...

Emba

(Encyclopedia)Emba ĕmˈbə [key], river, c.400 mi (640 km) long, W Kazakhstan. It rises in the Mugodzhar Mts. and flows SW into the Caspian Sea. The lower course traverses an area of salt domes and the petroleum-r...

Berchtesgaden

(Encyclopedia)Berchtesgaden bĕrkhˈtəsgäˌdən [key], town, Bavaria, SE Germany, in the Bavarian Alps. It is a popular ...

Ochoa, Severo

(Encyclopedia)Ochoa, Severo sāvāˈrō ōchōˈä [key], 1905–93, American biochemist and educator, b. Spain, M.D. Univ. of Madrid, 1929. After teaching at the universities of Madrid, Heidelberg, and Oxford, he ...

pyrogallol

(Encyclopedia)pyrogallol –ĭk [key], C6H6O3, white, crystalline, aromatic compound with a biting taste; it is poisonous. It melts at 133℃ and boils at 309℃. In alkaline solution it is an active reducing agent...

Fresnel, Augustin Jean

(Encyclopedia)Fresnel, Augustin Jean ōgüstăNˈ zhäN frānĕlˈ [key] 1788–1827, French physicist and engineer. He is known for his research on light, especially on conditions governing interference phenomena ...

Butlerov, Aleksandr Mikhailovich

(Encyclopedia)Butlerov, Aleksandr Mikhailovich əlyĭksänˈdər mēkhīlˈəvĭch bo͞otˈlyərôf [key], 1825–86, Russian chemist. As professor at the Univ. of Kazan he founded the first school of Russian chemi...

stereochemistry

(Encyclopedia)stereochemistry, study of the three-dimensional configuration of the atoms that make up a molecule and the ways in which this arrangement affects the physical and chemical properties of the molecule. ...