You are using an outdated browser. Please upgrade your browser to improve your experience and security.
  • thorium (chemical element)

    Thorium (Th), radioactive chemical element of the actinoid series of the periodic table, atomic number 90; it is a useful nuclear reactor fuel. Thorium was discovered (1828) by Swedish chemist J?ns Jacob Berzelius. It is silvery white but turns gray or black on exposure to air. It is about half as

  • thorium dioxide (chemical compound)

    monazite: …monazite frequently contains 10–12 percent thorium dioxide (ThO2) and thus represents a major commercial source of thorium as well. Countries in which monazite is mined include India, Malaysia, Vietnam, and Brazil. For detailed physical properties, see phosphate mineral (table).

  • thorium extraction process (chemistry)

    thorium processing: Conversion to uranium-233: …thorium reactor fuels through the thorium extraction, or Thorex, process, which employs tributyl phosphate extraction chemistry. Irradiated fuel, containing either thorium metal or oxide, is dissolved in nitric acid containing a small amount of fluoride ion. Uranium-233 and thorium are coextracted into a tributyl phosphate solution, which is then contacted…

  • thorium hydroxide (chemical compound)

    thorium processing: Acidic and alkaline digestion: …metathesizing the thorium phosphate to thorium hydroxide. Finally, the crude thorium hydroxide is dissolved in nitric acid to produce a thorium nitrate-containing feed solution suitable for final purification by solvent extraction (see below).

  • thorium nitrate (chemical compound)

    thorium processing: Acidic and alkaline digestion: …nitric acid to produce a thorium nitrate-containing feed solution suitable for final purification by solvent extraction (see below).

  • thorium phosphate (chemical compound)

    thorium processing: Acidic and alkaline digestion: …aqueous ammonia, first precipitating hydrated thorium phosphate as a gelatinous mass and then metathesizing the thorium phosphate to thorium hydroxide. Finally, the crude thorium hydroxide is dissolved in nitric acid to produce a thorium nitrate-containing feed solution suitable for final purification by solvent extraction (see below).

  • thorium processing

    Thorium processing, preparation of the ore for use in various products. Thorium (Th) is a dense (11.7 grams per cubic centimetre) silvery metal that is softer than steel. It has a high melting temperature of approximately 1,750 °C (3,180 °F). Below about 1,360 °C (2,480 °F), the metal exists in the

  • thorium series (physics)

    Thorium series, set of unstable heavy nuclei comprising one of the four radioactive

  • thorium silicate (mineral)

    Thorite, thorium silicate, ThSiO4, one of the most important thorium minerals. Almost always altered by hydration, it occurs in syenite near Brevik, Nor., and in the gem gravels of Sri Lanka. Thorite is mined commercially in the United States at Cripple Creek, Colo., and at Hall Mountain, Idaho.

  • thorium tetrafluoride (chemical compound)

    thorium processing: Reduction to the metal: …gaseous hydrogen fluoride (HF), yielding thorium tetrafluoride (ThF4). The metal is obtained by the Spedding process, in which powdered ThF4 is mixed with finely divided calcium (Ca) and a zinc halide (either zinc chloride or zinc fluoride) and placed in a sealed, refractory-lined “bomb.” Upon heating to approximately 650 °C…

  • thorium-229 (chemical isotope)

    thorium: Synthetic isotopes have been prepared; thorium-229 (7,880-year half-life), formed in the decay chain originating in the synthetic actinoid element neptunium, serves as a tracer for ordinary thorium (thorium-232).

  • thorium-230 (chemical isotope)

    ionium-thorium dating: Ionium-thorium dating, method of establishing the time of origin of marine sediments according to the amount of ionium and thorium they contain.

  • thorium-230 dating (physics)

    Ionium-thorium dating, method of establishing the time of origin of marine sediments according to the amount of ionium and thorium they contain. Because uranium compounds are soluble in seawater, while thorium compounds are quite insoluble, the thorium isotopes produced by the decay of uranium in

  • thorium-232 (chemical isotope)

    fissile material: the fertile materials uranium-238 and thorium-232, respectively. A fertile material, not itself capable of undergoing fission with low-energy neutrons, is one that decays into fissile material after neutron absorption within a reactor. Thorium-232 and uranium-238 are the only two naturally occurring fertile materials.

  • Thorkell the Tall (Viking chief)

    Canute (I): …put the renowned Viking chief Thorkell the Tall over East Anglia. Yet Canute did not rule like a foreign conqueror for long: by 1018 Englishmen were holding earldoms in Wessex and Mercia. The Danish element in his entourage steadily decreased. Thorkell was outlawed in 1021, and, during the rest of…

  • Thorkelson, Peter (American musician and actor)

    the Monkees: ), and Peter Tork (byname of Peter Thorkelson; b. February 13, 1942, Washington, D.C., U.S.—d. February 21, 2019).

  • Thorláksson, Gudbrandur (Icelandic bishop and scholar)

    Gudbrandur Thorláksson, Reformation scholar and Lutheran bishop who was responsible for the successful implantation of Lutheranism in Iceland. In 1570 when Thorláksson became bishop of Hólar, a post he was to hold for 56 years, Protestantism, imposed on Iceland by Danish rulers, had only nominal

  • Thorláksson, Jón (Icelandic author)

    Icelandic literature: The 18th century: Jón Torláksson, who was a clergyman as well as a poet and a scholar, translated two major English poems—John Milton’s Paradise Lost and Alexander Pope’s Essay on Man—as well as works by the German poet Friedrich Gottlieb Klopstock.

  • Thorn (Poland)

    Toruń, city, one of two capitals (with Bydgoszcz) of Kujawsko-Pomorskie województwo (province), north-central Poland, on the Vistula River. A river port, rail and road junction, and cultural centre, it is the birthplace (1473) of the astronomer Nicolaus Copernicus (Miko?aj Kopernik) and the seat of

  • thorn (plant anatomy)

    angiosperm: Shoot system modifications: Thorns represent the modification of an axillary shoot system in which the leaves are reduced and die quickly and the stems are heavily sclerified and grow for only a limited time (determinate growth). Thorns appear to protect the plant against herbivores. Examples are found in…

  • thorn apple (plant)

    Jimsonweed, (Datura stramonium), annual herbaceous plant of the nightshade family (Solanaceae). Possibly native to Central America, the plant is considered an invasive species throughout much of the Northern Hemisphere. It was used by Algonquin Indians in eastern North America, among other

  • thorn bird (bird)

    passeriform: Nesting: The thorn birds (Phacellodomus), as well as many other Furnariidae, build huge nests of twigs suspended from the ends of tree branches; these nests, which may be more than 2 metres (nearly 7 feet) long and contain many compartments, are used by only a single nesting…

  • Thorn Birds, The (American television miniseries)

    Television in the United States: The era of the miniseries: …series, including Shogun (NBC, 1980), The Thorn Birds (ABC, 1983), The Winds of War (ABC, 1983), and the 25-hour-long Centennial (NBC, 1978). Escalating production budgets and increasingly lower ratings threatened the miniseries by the end of the 1980s, however. War and Remembrance (ABC, 1988–89), at 30 hours the longest miniseries…

  • Thorn Birds, The (novel by McCullough)

    Colleen McCullough: …second novel, the sweeping romance The Thorn Birds (1977; television miniseries 1983), and for her Masters of Rome series (1990–2007), a painstakingly researched fictionalized account of Rome in the age of Julius Caesar.

  • thorn forest (vegetation)

    Thorn forest, dense, scrublike vegetation characteristic of dry subtropical and warm temperate areas with a seasonal rainfall averaging 250 to 500 millimetres (about 10 to 20 inches). This vegetation covers a large part of southwestern North America and southwestern Africa and smaller areas in

  • Thorn Grove (Illinois, United States)

    Chicago Heights, city, Cook county, northeastern Illinois, U.S. It is a suburb of Chicago, about 30 miles (50 km) south of downtown. The city’s name derives from its proximity to Chicago and its elevation, which averages 95 feet (29 metres) above the surrounding area. The site was the intersection

  • thorn scrub (vegetation)

    Thorn forest, dense, scrublike vegetation characteristic of dry subtropical and warm temperate areas with a seasonal rainfall averaging 250 to 500 millimetres (about 10 to 20 inches). This vegetation covers a large part of southwestern North America and southwestern Africa and smaller areas in

  • Thorn, Gaston Egmond (Luxembourgian politician)

    Gaston Egmond Thorn, Luxembourgian politician (born Sept. 3, 1928, Luxembourg city, Lux.—died Aug. 26, 2007, Luxembourg), pursued his long-time advocacy of European integration throughout a distinguished career that extended far beyond the borders of Luxembourg. Thorn, a member of the Liberal

  • Thorn, George Widmer (American physician)

    George Widmer Thorn, American physician (born Jan. 15, 1906, Buffalo, N.Y.—died June 26, 2004, Beverly, Mass.), did groundbreaking work in the treatment of Addison disease and kidney failure. As physician in chief (1942–72) at Peter Bent Brigham Hospital (now Brigham and Women’s Hospital) in B

  • Thorn, Treaty of (1466)

    Thirteen Years' War: …and was concluded by the Treaty of Toruń (Thorn; Oct. 19, 1466). In 1454 rebel Prussian groups petitioned Casimir IV of Poland for aid against the Knights. Casimir declared war on them, and in 1462 won the decisive Battle of Puck. In the Treaty of Toruń, the Teutonic Order surrendered…

  • thorn-elm (plant)

    Ulmaceae: Major genera and species: Thorn-elm (Hemiptelea davidii) is the sole member of its genus and is native to Asia. Members of the genus Holoptelea are found in Asia and Africa and are used locally as medicinal plants.

  • Thorn-Prikker, Jan (Dutch artist)

    Jan Thorn-Prikker, Dutch painter, designer, and decorator in the Art Nouveau style. He was an important figure in modern religious art, best known for his use of symbolism in stained-glass windows. Thorn-Prikker’s student work was impressionistic, and he also assimilated the contemporary influences

  • Thorn-Prikker, Johan (Dutch artist)

    Jan Thorn-Prikker, Dutch painter, designer, and decorator in the Art Nouveau style. He was an important figure in modern religious art, best known for his use of symbolism in stained-glass windows. Thorn-Prikker’s student work was impressionistic, and he also assimilated the contemporary influences

  • thornapple (plant)

    Hawthorn, (genus Crataegus), large genus of thorny shrubs or small trees in the rose family (Rosaceae), native to the north temperate zone. Many species are common to North America, and a number of cultivated varieties are grown as ornamentals for their attractive flowers and fruits. The hawthorn

  • thornback ray (fish)

    chondrichthyan: Growth: The males of European thornback rays (Raja clavata) are about 50 cm (20 inches) wide when they reach first maturity, about seven years after birth; females are 60 to 70 cm (24 to 28 inches) at first maturity, nine years after birth.

  • thornbill (hummingbird group)

    hummingbird: In the thornbills (Ramphomicron and Chalcostigma), it is quite short, but in the sword-billed hummingbird (Ensifera ensifera), it is unusually long, contributing more than half of the bird’s 21-cm length. The bill is slightly downcurved in many species, strongly so in the sicklebills (Eutoxeres); it is turned…

  • Thornburg v. Gingles (law case)

    gerrymandering: …Supreme Court has held (in Thornburg v. Gingles, 1986) that such practices are incompatible with Section 2 of the 1965 Voting Rights Act (as amended in 1982), which generally prohibits voting standards or practices whose practical effect is that members of racial minority groups “have less opportunity than other members…

  • Thornburg, Elizabeth June (American actress and singer)

    Betty Hutton, American actress and singer who electrified audiences with her explosive personality and high-spirited performances in musicals and comedies on the stage and screen. At the age of three Hutton began performing for audiences in her mother’s Detroit speakeasies during the Prohibition

  • Thornbury (South Gloucestershire, England, United Kingdom)

    South Gloucestershire: Thornbury (a market centre in the northwest) and Kingswood are the administrative centres.

  • thornbush (plants)

    Africa: Cape shrub, bush, and thicket: …considerable enclaves of true evergreen bushland, which have reverted to shrubland (fynbos). Sclerophyllous foliage and proteas abound. Although grassy tracts occur on the mountains, they are characteristically unusual lower down. Beyond the Cape Ranges, fynbos grades into karoo.

  • thornbush savanna (grassland)

    savanna: Environment: …into three categories—wet, dry, and thornbush—depending on the length of the dry season. In wet savannas the dry season typically lasts 3 to 5 months, in dry savannas 5 to 7 months, and in thornbush savannas it is even longer. An alternative subdivision recognizes savanna woodland, with trees and shrubs…

  • thornbush vegetation (plants)

    Africa: Cape shrub, bush, and thicket: …considerable enclaves of true evergreen bushland, which have reverted to shrubland (fynbos). Sclerophyllous foliage and proteas abound. Although grassy tracts occur on the mountains, they are characteristically unusual lower down. Beyond the Cape Ranges, fynbos grades into karoo.

  • Thorndike puzzle box (scientific apparatus)

    animal learning: Classical and instrumental conditioning: …placing a cat inside a “puzzle box,” an apparatus from which the animal could escape and obtain food only by pressing a panel, opening a catch, or pulling on a loop of string. Thorndike measured the speed with which the cat gained its release from the box on successive trials.…

  • Thorndike’s law of effect (psychology)

    animal learning: Laws of performance: Thorndike’s law of effect—which stated that a behaviour followed by a satisfactory result was most likely to become an established response to a particular stimulus—was intended to summarize these observations, and it is surely an inescapable feature of understanding how and why humans and other…

  • Thorndike’s law of exercise (psychology)

    Edward L. Thorndike: The law of exercise stated that behaviour is more strongly established through frequent connections of stimulus and response. In 1932 Thorndike determined that the second of his laws was not entirely valid in all cases. He also modified the law of effect to state that rewards…

  • Thorndike, Dame Agnes Sybil (British actress)

    Dame Sybil Thorndike, English actress of remarkable versatility. The daughter of a canon of Rochester Cathedral, she performed with Annie Horniman’s company in Manchester (1908–09 and 1911–13), and then joined the Old Vic Company in London (1914–18), where she helped to establish not only the

  • Thorndike, Dame Sybil (British actress)

    Dame Sybil Thorndike, English actress of remarkable versatility. The daughter of a canon of Rochester Cathedral, she performed with Annie Horniman’s company in Manchester (1908–09 and 1911–13), and then joined the Old Vic Company in London (1914–18), where she helped to establish not only the

  • Thorndike, Edward L. (American psychologist)

    Edward L. Thorndike, American psychologist whose work on animal behaviour and the learning process led to the theory of connectionism, which states that behavioral responses to specific stimuli are established through a process of trial and error that affects neural connections between the stimuli

  • Thorndike, Edward Lee (American psychologist)

    Edward L. Thorndike, American psychologist whose work on animal behaviour and the learning process led to the theory of connectionism, which states that behavioral responses to specific stimuli are established through a process of trial and error that affects neural connections between the stimuli

  • Thorndike–Barnhart dictionaries (series of school dictionaries)

    Thorndike–Barnhart dictionaries, notable series of school dictionaries that were widely used in the United States during the 20th century. Their content was based on the theories of Edward L. Thorndike, an educational psychologist, and Clarence Lewis Barnhart, lexicographer and editor, both

  • Thorne, Ken (British composer and conductor)
  • Thorne, Kip S. (American physicist)

    Kip S. Thorne, American physicist who was awarded the 2017 Nobel Prize in Physics for his work on the Laser Interferometer Gravitational-Wave Observatory (LIGO) and the first direct detection of gravity waves. He shared the prize with American physicists Rainer Weiss and Barry C. Barish. Thorne

  • Thorne, Oliver (American author)

    Harriet Mann Miller, American children’s author whose writing tended to either heartrending fiction about desolate children or lively, factual nature pieces. Harriet Mann grew up in various towns as her itinerant father drifted from place to place, and her schooling was consequently irregular. In

  • Thornhill, Claude (American musician)

    Gil Evans: …worked as an arranger with Claude Thornhill’s band, devising the unique instrumentation that was to become a trademark of his early years: a standard big-band lineup, plus French horns and tuba. Evans used similar instrumentation for his two arrangements on Miles Davis’s seminal album Birth of the Cool (recorded 1949–50),…

  • Thornhill, Sir James (English painter)

    Sir James Thornhill, English painter, the first to excel in historical painting, whose style was in the Italian Baroque tradition. Thornhill became the history painter and sergeant painter to George I and George II, master of the Painters’ Company in 1720, fellow of the Royal Society in 1723, and

  • Thornicroft’s giraffe (mammal)

    giraffe: giraffa), the Masai giraffe (G. tippelskirchi), and the reticulated giraffe (G. reticulata).

  • Thorning-Schmidt, Helle (prime minister of Denmark)

    Helle Thorning-Schmidt, Danish politician who became Denmark’s first female prime minister when she took office in 2011. Thorning-Schmidt was the youngest of three children in a family split by divorce. She grew up with her businesswoman mother in Ish?j, a town near Copenhagen that had attracted

  • thorns, crown of (plant)

    Crown of thorns, (Euphorbia milii), thorny plant of the spurge family (Euphorbiaceae), native to Madagascar. Crown of thorns is popular as a houseplant and is grown in warm climates as a garden shrub. Flowering is year-round but most plentiful in wintertime in the Northern Hemisphere. The common

  • Thorns, Crown of (religious relic)

    Crown of Thorns, wreath of thorns that was placed on the head of Jesus Christ at his crucifixion, whereby the Roman soldiers mocked his title “King of the Jews.” The relic purported to be the Crown of Thorns was transferred from Jerusalem to Constantinople by 1063. The French king Louis IX (St.

  • Thornthwaite, C. Warren (American geographer and climatologist)

    climate classification: Empirical classifications: …made by the American geographer-climatologist C. Warren Thornthwaite in 1931 and 1948. He first used a vegetation-based approach that made use of the derived concepts of temperature efficiency and precipitation effectiveness as a means of specifying atmospheric effects on vegetation. His second classification retained these concepts in the form of…

  • Thornton Island (atoll, Kiribati)

    Caroline Atoll, coral formation in the Central and Southern Line Islands, part of Kiribati, in the southwestern Pacific Ocean, about 450 miles (720 km) northwest of Tahiti. With a total area of 1.45 square miles (3.76 square km), it is made up of 20 islets that rise to 20 feet (6 metres) above mean

  • Thornton Reef Complex (geological feature, United States)

    Silurian Period: Reef mounds and coral biostromes: The Thornton Reef Complex outside Chicago is an example of a well-zoned Wenlock complex more than 1 km (0.6 mile) in diameter. Others are well known from the Silurian of Manitoulin Island (Ontario, Can.), northern Greenland, Shropshire (Eng.), Gotland (Swed.), Estonia, the central and southern Urals…

  • Thornton, Big Mama (American singer-songwriter)

    Big Mama Thornton, American singer and songwriter who performed in the tradition of classic blues singers such as Bessie Smith and Memphis Minnie. Her work inspired imitation by Elvis Presley and Janis Joplin, who recorded popular cover versions of Thornton’s “Hound Dog” and “Ball and Chain,”

  • Thornton, Billy (American actor, director, and writer)

    Billy Bob Thornton, American actor, writer, director, and musician known for his versatility and eccentric personality. He won an Academy Award for his screenplay of Sling Blade (1996). Thornton grew up in rural Arkansas. He played in various bands in high school and worked a number of menial jobs

  • Thornton, Billy Bob (American actor, director, and writer)

    Billy Bob Thornton, American actor, writer, director, and musician known for his versatility and eccentric personality. He won an Academy Award for his screenplay of Sling Blade (1996). Thornton grew up in rural Arkansas. He played in various bands in high school and worked a number of menial jobs

  • Thornton, Charles Bates (American industrialist)

    Litton Industries, Inc.: …1953 by Charles Bates “Tex” Thornton (1913–81). Its more than 80 divisions provide products and services ranging from electronic and electrical components and equipment to aerospace and marine systems and equipment. It is headquartered in Beverly Hills, Calif. Among Litton’s popularly known brand-name products are Litton microwave ovens and Royal…

  • Thornton, Frank (British actor)

    Frank Thornton, (Frank Thornton Ball), British actor (born Jan. 15, 1921, London, Eng.—died March 16, 2013, London), brought dapper elegance, perfect comic timing, and a subtle sense of the absurd to his portrayal of the haughty, disapproving Captain Stephen Peacock, head floorwalker at Grace

  • Thornton, Henry (British economist, banker, and philanthropist)

    Henry Thornton, English economist, banker, and philanthropist who made significant contributions to monetary theory. Thornton was the son of a noted merchant and philanthropist. He became a leading member of the Clapham Sect, an austere, evangelical branch of the Church of England, and was a close

  • Thornton, Joe (Canadian hockey player)

    San Jose Sharks: …the standout play of centre Joe Thornton, had the best record in the NHL, earning the top seed in the Western Conference play-offs. However, in a twist on the franchise’s early play-off history, the Sharks were upset in the first round of the postseason by the Anaheim Ducks. The team…

  • Thornton, Tex (American industrialist)

    Litton Industries, Inc.: …1953 by Charles Bates “Tex” Thornton (1913–81). Its more than 80 divisions provide products and services ranging from electronic and electrical components and equipment to aerospace and marine systems and equipment. It is headquartered in Beverly Hills, Calif. Among Litton’s popularly known brand-name products are Litton microwave ovens and Royal…

  • Thornton, William (American architect, inventor, and public official)

    William Thornton, British-born American architect, inventor, and public official, best known as the creator of the original design for the Capitol at Washington, D.C. Thornton studied medicine at the University of Edinburgh (1781–84) and received his M.D. from the University of Aberdeen (1784).

  • Thornton, William Robert (American actor, director, and writer)

    Billy Bob Thornton, American actor, writer, director, and musician known for his versatility and eccentric personality. He won an Academy Award for his screenplay of Sling Blade (1996). Thornton grew up in rural Arkansas. He played in various bands in high school and worked a number of menial jobs

  • Thornton, Willie Mae (American singer-songwriter)

    Big Mama Thornton, American singer and songwriter who performed in the tradition of classic blues singers such as Bessie Smith and Memphis Minnie. Her work inspired imitation by Elvis Presley and Janis Joplin, who recorded popular cover versions of Thornton’s “Hound Dog” and “Ball and Chain,”

  • thornveld (plants)

    Africa: Cape shrub, bush, and thicket: …considerable enclaves of true evergreen bushland, which have reverted to shrubland (fynbos). Sclerophyllous foliage and proteas abound. Although grassy tracts occur on the mountains, they are characteristically unusual lower down. Beyond the Cape Ranges, fynbos grades into karoo.

  • thorny catfish (fish)

    ostariophysan: Annotated classification: Family Doradidae (thorny catfishes) Overlapping plates cover sides of body. Intestinal modifications for aerial respiration. Aquarium fishes. Generally small, to more than 1 metre (3 feet). South America. About 30 genera, about 72 species. Family Auchenipteridae (driftwood catfishes) Internal insemination. Fresh and brackish water, Panama and South…

  • thorny coral (invertebrate)

    coral: …1,000 species; black corals and thorny corals (Antipatharia), about 100 species; horny corals, or gorgonians (Gorgonacea), about 1,200 species; and blue corals (Coenothecalia), one living species.

  • thorny devil (lizard species)

    Moloch, small (20-centimetre- [8-inch-] long), squat, orange and brown Australian lizard of the Old World family Agamidae. Moloch is entirely covered with thornlike spines, the largest projecting from the snout and over each eye. The shape of its body and many of its habits are similar to those of

  • thorny locust (tree)

    locust: The honey locust (Gleditsia triacanthos), also of the pea family, is a North American tree commonly used as an ornamental and often found in hedges.

  • Thornycroft, Sir Hamo (British sculptor)

    Sir Hamo Thornycroft, English sculptor who executed many public monuments. The son of the sculptor Thomas Thornycroft, Hamo studied under his father, at the schools of the Royal Academy, and in Italy, where he was particularly interested in Michelangelo. He established his own reputation as a

  • Thornycroft, Sir John Isaac (British architect and engineer)

    Sir John Isaac Thornycroft, English naval architect and engineer who made fundamental improvements in the design and machinery of torpedo boats and built the first torpedo boat for the Royal Navy. Soon after he established his launch-building and engineering works at Chiswick, London, in 1866,

  • Thornycroft, Sir William Hamo (British sculptor)

    Sir Hamo Thornycroft, English sculptor who executed many public monuments. The son of the sculptor Thomas Thornycroft, Hamo studied under his father, at the schools of the Royal Academy, and in Italy, where he was particularly interested in Michelangelo. He established his own reputation as a

  • Thoroddsen, Jón (Icelandic writer)

    Jón Thoroddsen, writer commonly known as the father of the Icelandic novel. Thoroddsen studied law in Copenhagen, but an unhappy love affair—which is reflected in his novels—led him to seek solace in literature. He did so in lively fashion, composing drinking songs as well as poetry. The novels of

  • Thoroddsen, Jón Thortharson (Icelandic writer)

    Jón Thoroddsen, writer commonly known as the father of the Icelandic novel. Thoroddsen studied law in Copenhagen, but an unhappy love affair—which is reflected in his novels—led him to seek solace in literature. He did so in lively fashion, composing drinking songs as well as poetry. The novels of

  • Thorold (Ontario, Canada)

    Thorold, city, regional municipality of Niagara, southeastern Ontario, Canada. It lies along the Welland Canal, 4 miles (6.5 km) south of St. Catharines. Founded in 1788 and named after a British member of Parliament, Sir John Thorold, the town grew with the development of the canal, beginning in

  • thoron (chemical isotope)

    radon: Radon-220 (thoron; 51.5-second half-life) was first observed in 1899 by the British scientists Robert B. Owens and Ernest Rutherford, who noticed that some of the radioactivity of thorium compounds could be blown away by breezes in the laboratory. Radon-219 (actinon; 3.92-second half-life), which is associated…

  • thoroughbass (music)

    Basso continuo, in music, a system of partially improvised accompaniment played on a bass line, usually on a keyboard instrument. The use of basso continuo was customary during the 17th and 18th centuries, when only the bass line was written out, or “thorough” (archaic spelling of “through”),

  • Thoroughbred (breed of horse)

    Thoroughbred, breed of horse developed in England for racing and jumping (see photograph). The origin of the Thoroughbred may be traced back to records indicating that a stock of Arab and Barb horses was introduced into England as early as the 3rd century. Natural conditions favoured development of

  • Thoroughbred racing

    D. Wayne Lukas: ), American Thoroughbred and Quarter Horse trainer whose horses captured numerous races and amassed record earnings.

  • Thoroughly Modern Millie (film by Hill [1967])

    Carol Channing: …in the Julie Andrews vehicle Thoroughly Modern Millie (1967) as a loopy society widow represented the apex of her own film career. In later years Channing starred in a number of touring cabaret shows and television specials and did voice-over work for numerous children’s films and cartoons.

  • thoroughwort (plant genus)

    Eupatorium, genus of about 60 species of plants belonging to the aster family (Asteraceae). Members of the genus are found chiefly in temperate areas of the Northern Hemisphere, though some species are also found in tropical South America, the West Indies, and Mexico. Several are grown as

  • Thorp, John (American inventor)

    John Thorp, American inventor of the ring spinning machine (1828), which by the 1860s had largely replaced Samuel Crompton’s spinning mule in the world’s textile mills because of its greater productivity and simplicity. Little is known of Thorp’s early life. His first patent, received at the age of

  • Thorp, Thomas Bangs (American humorist)

    Thomas B. Thorpe, American humorist and one of the most effective portrayers of American frontier life and character before Mark Twain. Thorpe studied painting and at age 18 exhibited his “Ichabod Crane” at the American Academy of Fine Arts, New York City. In 1836 he moved to Louisiana, where he

  • Thorpe, Adam (British author)

    English literature: Fiction: Adam Thorpe’s striking first novel, Ulverton (1992), records the 300-year history of a fictional village in the styles of different epochs. Golding’s veteran fiction career came to a bravura conclusion with a trilogy whose story is told by an early 19th-century narrator (To the Ends…

  • Thorpe, Billy (British musician)

    Billy Thorpe, (William Richard Thorpe), British-born Australian rock icon (born March 29, 1946, Manchester, Eng.—died Feb. 28, 2007 , Sydney, Australia), as front man for the Aztecs, was regarded as the father of Australian pub rock. Thorpe was known as much for his showmanship as for his

  • Thorpe, Cyrus (United States marine officer)

    logistics: Fundamentals: marine officer, Lieutenant Colonel Cyrus Thorpe, published his Pure Logistics in 1917, arguing that the logical function of logistics, as the third member of the strategy–tactics–logistics trinity, was to provide all the means, human and material, for the conduct of war, including not merely the traditional functions of supply…

  • Thorpe, Ian (Australian swimmer)

    Ian Thorpe, Australian athlete, who was the most successful swimmer in that country’s history, accumulating five Olympic gold medals and 11 world championship titles between 1998 and 2004. Thorpe began swimming competitively at age eight, and, although he had been uncoordinated in other sports, he

  • Thorpe, James Francis (American athlete)

    Jim Thorpe, one of the most accomplished all-around athletes in history, who in 1950 was selected by American sportswriters and broadcasters as the greatest American athlete and the greatest gridiron football player of the first half of the 20th century. Predominantly of American Indian (Sauk and

  • Thorpe, Jeremy (British politician)

    Liberal Party: History.: Under Jeremy Thorpe the party made substantial progress in the 1974 general election, returning almost 20 percent of the popular vote. The charismatic Thorpe himself fell victim to a scandal in which money was alleged to have been paid to secure the silence of his former…

  • Thorpe, Jim (American athlete)

    Jim Thorpe, one of the most accomplished all-around athletes in history, who in 1950 was selected by American sportswriters and broadcasters as the greatest American athlete and the greatest gridiron football player of the first half of the 20th century. Predominantly of American Indian (Sauk and

  • Thorpe, Mary Anne (New Zealand anthropologist and historian)

    Dame Anne Salmond, New Zealand anthropologist and historian best known for her writings on New Zealand history, her study of Maori culture, and her efforts to improve intercultural understanding between Maori and Pakeha (people of European ancestry) New Zealanders. Salmond grew up in Gisborne, a

Your preference has been recorded
Check out Britannica's new site for parents!
Subscribe Today!
港台一级毛片免费观看