Columbia Encyclopedia

Search results

500 results found

antimony

(Encyclopedia)antimony ănˈtĭmōˌnē [key] [Lat. antimoneum], semimetallic chemical element; symbol Sb [Lat. stibium,=a mark]; at. no. 51; at. wt. 121.760; m.p. 630.74℃; b.p. 1,750℃; sp. gr. (metallic form) ...

Moorish art and architecture

(Encyclopedia)Moorish art and architecture, branch of Islamic art and architecture developed in the westernmost lands of the Muslims, known as the Maghreb: N Africa and Spain. The Great Mosque at Al Qayrawan in Tun...

Liechtenstein

(Encyclopedia)Liechtenstein lĭkhˈtənshtīnˌ [key], officially Principality of Liechtenstein, principality (2015 est. pop. 37,000), 62 sq mi (160 sq km), W central Europe. It is situated in the Alps between Aust...

arsenic

(Encyclopedia)arsenic ärˈsənĭk [key], a semimetallic chemical element; symbol As; at. no. 33; at. wt. 74.92160; m.p. 817℃ (at 28 atmospheres pressure); sublimation point 613℃; sp. gr. (stable form) 5.73; va...

pendulum

(Encyclopedia)pendulum, a mass, called a bob, suspended from a fixed point so that it can swing in an arc determined by its momentum and the force of gravity. The length of a pendulum is the distance from the point...

bow and arrow

(Encyclopedia)bow and arrow, weapon consisting of two parts; the bow is made of a strip of flexible material, such as wood, with a cord linking the two ends of the strip to form a tension from which is propelled th...

steel industry

(Encyclopedia)steel industry, the business of processing iron ore into steel, which in its simplest form is an iron-carbon alloy, and in some cases, turning that metal into partially finished products or recycling ...

sulfate

(Encyclopedia)sulfate, chemical compound containing the sulfate (SO4) radical. Sulfates are salts or esters of sulfuric acid, H2SO4, formed by replacing one or both of the hydrogens with a metal (e.g., sodium) or a...

Trieste

(Encyclopedia)Trieste trēĕˈstā [key], Serbo-Croatian Trst, city (1991 pop. 231,100), capital of Friuli–Venezia Giulia and of Trieste prov., extreme NE Italy, on the Gulf of Trieste (at the head of the Adriati...

Sardinia

(Encyclopedia)Sardinia särdĭnˈēə [key], Ital. Sardegna, region (1991 pop. 1,648,248), 9,302 sq mi (24,092 sq km), W Italy, mostly on the Mediterranean island of Sardinia, which is separated in the north from C...