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boron

(Encyclopedia)boron bōrˈŏn [key] [New Gr. from borax], chemical element; symbol B; at. no. 5; interval in which at. wt. ranges 10.806–10.821; m.p. about 2,300℃; sublimation point about 2,550℃; sp. gr. 2.3 ...

submarine

(Encyclopedia)submarine, naval craft capable of operating for an extended period of time underwater. Submarines are almost always warships, although a few are used for scientific, business, or other purposes (see a...

Ginner, Charles

(Encyclopedia)Ginner, Charles jĭnˈər [key], 1878–1952, English painter. After study in Paris, Ginner settled in London, becoming a founder of the neorealist school. During both world wars he was an official go...

El Centro

(Encyclopedia)El Centro ĕl sĕnˈtrō [key], city (2020 pop. 44,322), seat of Imperial co., SE Calif., near the ...

Quonset Point

(Encyclopedia)Quonset Point kwŏnˈsĭt [key], peninsula extending into Narragansett Bay, S R.I., in the town of North Kingstown. In World War II the peninsula became the site of a naval air station and constructio...

Terrell

(Encyclopedia)Terrell tĕrˈəl [key], city (1990 pop. 12,490), Kaufman co., N Tex.; inc. 1883. In a farm area, cattle and horses are raised and there are nurseries; peaches, cotton, and wheat are grown. Motor vehi...

Hugenberg, Alfred

(Encyclopedia)Hugenberg, Alfred älˈfrĕt ho͞oˈgənbĕrkh [key], 1865–1951, German financier and politician. He was president of the directorate of the Krupp firm (1909–18), entered the Reichstag in 1919, an...

krypton

(Encyclopedia)krypton krĭpˈtŏn [key] [Gr.,=hidden], gaseous chemical element; symbol Kr; at. no. 36; at. wt. 83.798; m.p. −156.6℃; b.p. −152.3℃; density 3.73 grams per liter at STP; valence usually 0. Kr...

Montgomery, city, United States

(Encyclopedia)Montgomery, city (1990 pop. 187,106), state capital and seat of Montgomery co., E central Ala., near the head of navigation on the Alabama River just below the confluence of the Coosa and Tallapoosa r...

insulation

(Encyclopedia)insulation ĭnˌsəlāˈshən, ĭnˌsyo͝o– [key], use of materials or devices to inhibit or prevent the conduction of heat or of electricity. Common heat insulators are, fur, feathers, fiberglass, ...