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Ernst, Richard Robert

(Encyclopedia)Ernst, Richard Robert 1933–2021, Swiss chemist, Swiss Federal Institute of Technology Zurich (ETH Zurich; B.S., 1956, Ph.D., 1962). He worked as a res...

icebreaker

(Encyclopedia)icebreaker, ship of special hull design and wide beam, with relatively flat bottom, designed to force its way through ice. When the icebreaker charges into the ice at full speed, its sharply inclined ...

Hartlepool

(Encyclopedia)Hartlepool härtˈlēpo͞ol, härtˈəl– [key], borough and unitary authority, NE E...

Bloch, Felix

(Encyclopedia)Bloch, Felix, 1905–83, American physicist, b. Zürich, Switzerland, Ph.D. Univ. of Leipzig, Germany, 1928. He was a professor at Stanford from 1934 until his retirement in 1971. Bloch and Edward Pur...

silicon carbide

(Encyclopedia)silicon carbide, chemical compound, SiC, that forms extremely hard, dark, iridescent crystals that are insoluble in water and other common solvents. Widely used as an abrasive, it is marketed under su...

Barents Sea

(Encyclopedia)Barents Sea, arm of the Arctic Ocean, N of Norway and European Russia, partially enclosed by Franz Josef Land on the north, Novaya Zemlya on the east, and Svalbard on the west. Its waters are warmed b...

radiation weapon

(Encyclopedia)radiation weapon or radiological weapon, a bomb or warhead that uses conventional chemical explosives to disperse radioactive material, sometimes called a “dirty bomb.” Designed to produce radiati...

Rainy Lake

(Encyclopedia)Rainy Lake, c.345 sq mi (890 sq km), on the U.S.-Canada border in N Minn. and W Ont. The lake, irregular in shape and dotted with islands, is located in rough woodlands. Its outlet, Rainy River (c.85 ...

seismology

(Encyclopedia)seismology sīzmŏlˈəjē, sīs– [key], scientific study of earthquakes and related phenomena, including the propagation of waves and shocks on or within the earth by natural or artificially genera...

reprisal

(Encyclopedia)reprisal, in international law, the forcible taking, in time of peace, by one country of the property or territory belonging to another country or to the citizens of the other country, to be held as a...