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Midland, cities, United States

(Encyclopedia)Midland. 1 City (1990 pop. 38,053), seat of Midland co., central Mich., in the Saginaw valley at the confluence of the Tittabawassee and Chippewa rivers; inc. 1887. Midland owes its development after ...

ammonia

(Encyclopedia)ammonia, chemical compound, NH3, colorless gas that is about one half as dense as air at ordinary temperatures and pressures. It has a characteristic pungent, penetrating odor. Ammonia forms a minute ...

iodine

(Encyclopedia)iodine īˈədīn, –dĭn [key] [Gr.,=violet], nonmetallic chemical element; symbol I; at. no. 53; at. wt. 126.90447; m.p. 113.5℃; b.p. 184.35℃; sp. gr. 4.93 at 20℃; valence −1, +1, +3, +5, o...

calcium oxide

(Encyclopedia)calcium oxide, chemical compound, CaO, a colorless, cubic crystalline or white amorphous substance. It is also called lime, quicklime, or caustic lime, but commercial lime often contains impurities, e...

radioactive waste

(Encyclopedia)radioactive waste, material containing the unusable radioactive byproducts of the scientific, military, and industrial applications of nuclear energy. Since its radioactivity presents a serious health...

argon

(Encyclopedia)argon ärˈgŏn [key] [Gr.,=inert], gaseous chemical element; symbol Ar; at. no. 18; at. wt. 39.948; m.p. −189.2℃; b.p. −185.7℃; density 1.784 grams per liter at STP; valence 0. Argon is a col...

sediment

(Encyclopedia)sediment, mineral or organic particles that are deposited by the action of wind, water, or glacial ice. These sediments can eventually form sedimentary rocks (see rock). Sediments form sedimentary ...

Lüneburg

(Encyclopedia)Lüneburg lüˈnəbo͝orgər hīˈdə [key], a vast heath, SW of Lüneburg, lies between the Elbe and Aller rivers. It is a sandy region; sheep are raised and petroleum is produced. Parts of the heath...

Uyuni, Salar de

(Encyclopedia)Uyuni, Salar de sälärˈ dā o͞oyo͞oˈnē [key], salt flats (c.4,250 sq mi/11,000 sq km), Potosí dept., SW Bolivia, in the altiplano. The Río Grande de Lípez flows into the flats in the southeas...

Onondaga Lake

(Encyclopedia)Onondaga Lake ŏnəndäˈgə, –dôˈ– [key], brackish lake, 5 mi (8 km) long and 1 mi (1.6 km) wide, central N.Y., NW of Syracuse. In 1654, Father LeMoyne, a missionary, was taken to salt springs ...