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Douglas-Home, Alexander Frederick, Baron Home of the Hirsel

(Encyclopedia)Douglas-Home, Alexander Frederick, Baron Home of the Hirsel dŭgˈləs-hyo͞om [key], 1903–95, British politician. Educated at Eton and Oxford, he was elected to the House of Commons in 1931 as a Co...

field, in physics

(Encyclopedia)field, in physics, region throughout which a force may be exerted; examples are the gravitational, electric, and magnetic fields that surround, respectively, masses, electric charges, and magnets. The...

Athens, cities, United States

(Encyclopedia)Athens. 1 City (2020 population 25406), seat of Limestone co., N Al; inc. 1818. One of the first incorporated cities in Alabma, the city was established a year before the state was ...

Paris Pacts

(Encyclopedia)Paris Pacts, four international agreements signed in Paris on Oct. 23, 1954, to establish a new international status for West Germany. Since the end of World War II, West Germany had been occupied by ...

livermorium

(Encyclopedia)livermorium, artificially produced radioactive chemical element; symbol Lv; at. no. 116; mass number of most stable isotope 292; m.p., b.p., sp. gr., and valence unknown. Situated in Group 16 of the p...

supercomputer

(Encyclopedia)supercomputer, a state-of-the-art, extremely powerful computer capable of manipulating massive amounts of data in a relatively short time. Supercomputers are very expensive and are employed for specia...

Valencia, autonomous community, Spain

(Encyclopedia)Valencia välānˈthēä [key], autonomous community (2011 pop. 5,009,931), 8,980 sq mi (23,257 sq km), and former kingdom, E Spain, on the Mediterranean. It now comprises the provinces of Alicante/Al...

Zagreb

(Encyclopedia)Zagreb zäˈgrĕb [key], Ger. Agram, Hung. Zágráb, city (2011 pop. 790,017), capital and largest city of Croatia, on the Sava River. Zagreb is Croatia's largest industrial, manufacturing, and financ...

promethium

(Encyclopedia)promethium prōmēˈthēəm [key], artificially produced radioactive chemical element; symbol Pm; at. no. 61; mass no. of most stable isotope 145; m.p. 1,042℃; b.p. 3,000℃ (estimated); sp. gr. unk...

hydrogen

(Encyclopedia)hydrogen hīˈdrəjən [key] [Gr.,=water forming], gaseous chemical element; symbol H; at. no. 1; interval in which at. wt. ranges 1.00784–1.00811; m.p. −259.14℃; b.p. −252.87℃; density 0.08...