| Dehmelt, Hans Georg ... delafossite |
| | - Dehmelt, Hans Georg
- German-born American physicist who shared one-half of the Nobel Prize for Physics in 1989 with the German physicist Wolfgang Paul. (The other half of the prize was awarded to the American physicist Norman F. Ramsey.) Dehmelt received his share of ... [1 Related Articles]
- Dehn's lemma
- (from the article "Dehn, Max") German mathematician and educator whose study of topology in 1910 led to his theorem on topological manifolds, known as Dehn's lemma.
- Dehn, Max
- German mathematician and educator whose study of topology in 1910 led to his theorem on topological manifolds, known as Dehn's lemma. [1 Related Articles]
- Dehn, Paul
- (from the article "1951: Other Winners") Screenplay: Michael Wilson and Harry Brown for A Place in the SunMotion Picture Story: Paul Dehn and James Bernard for Seven Days to NoonStory and Screenplay: Alan Jay Lerner for An American in ParisCinematography, Black-and-White: William C. Mellor for A ...
- Dehon, Leon-Gustave
- French Roman Catholic priest who founded the Congregation of the Priests of the Sacred Heart of Jesus, a congregation of priests and brothers dedicated to spreading the apostolate of the Sacred Heart.
- Dehra Dun
- city, capital of Uttaranchal state, northern India. It lies in the Himalayan foothills at an elevation of 2,200 feet (670 metres). Dehra Dun was founded in 1699, when the heretical Sikh Guru Ram Rai, driven out of the Punjab, built ... [1 Related Articles]
- Dehri
- city, western Bihar state, northeastern India, west of the Son River. It has major road and rail connections and houses railway workshops. Dehri is the headworks of the Son canal system and the site of a hydroelectric dam. Its industries ...
- Dehua porcelain
- Chinese porcelain made at Dehua in Fujian province. Although the kiln began production some time during the Song period (960-1279), most examples of the porcelain are attributed to the Ming dynasty (1368-1644). The characteristic product of Dehua was the white ... [3 Related Articles]
- dehydration
- in food processing, means by which many types of food can be preserved for indefinite periods by extracting the moisture, thereby inhibiting the growth of microorganisms. Dehydration is one of the oldest methods of food preservation and was used by ... [4 Related Articles]
- dehydration
- (from the article "duricrust") Mechanisms that are capable of promoting dehydration and hardening of ferricrusts, whether before, during, or after stripping of the overlying soil, include the destruction of forest and lowering of the water table, both of which can occur in several ways. ...
- dehydration
- loss of water from the body; it is almost invariably associated with some loss of salt (sodium chloride) as well. The treatment of any form of dehydration, therefore, requires not only the replacement of the water lost from the body ... [11 Related Articles]
- dehydration reaction
- (from the article "metamorphic rock") ...but in general the fluid and rock-load pressures tend to be rather similar during such reactions. The water virtually fights its way out by lifting the rocks. Thus, the first chemical reaction is a dehydration reaction leading to the formation ...
- dehydrogenation
- (from the article "oxidation-reduction reaction") ...nontransparent. The mechanism of soot formation is accounted for by simultaneous polymerization, a process whereby molecules or molecular fragments are combined into extremely large groupings, and dehydrogenation, a process that eliminates hydrogen from molecules.occurrence in elimination reaction
- dehydrohalogenation
- (from the article "elimination reaction") Elimination reactions are commonly known by the kind of atoms or groups of atoms leaving the molecule. The removal of a hydrogen atom and a halogen atom, for example, is known as dehydrohalogenation; when both leaving atoms are halogens, the ...
- Deianeira
- (from the article "Heracles") Having completed the Labours, Heracles undertook further enterprises, including warlike campaigns. He also successfully fought the river god Achelous for the hand of Deianeira. As he was taking her home, the Centaur Nessus tried to violate her, and Heracles shot ...
- Deichstrasse
- (from the article "Hamburg") The last intact ensemble of traditional Hamburg architecture is to be found in the Deichstrasse, one side of which backs onto the Nikolai canal. Its tall, narrow houses, resembling those of Amsterdam, were originally built from the 17th through the ...
- deification
- (from the article "Eastern Orthodoxy") ...sin is viewed as a punishable crime, and grace is understood to grant forgiveness. Hence, in the West, the aim of the Christian is justification, but in the East, it is rather communion with God and deification. In the West, ...
- Deighton, Len
- English author, journalist, film producer, and a leading writer of spy stories, his best-known being his first, The Ipcress File (1962), an account of deception and betrayal in an espionage agency.
- Deildartunguhver
- (from the article "Iceland") ...hot springs and solfataras-volcanic vents that emit hot gases and vapours-than any other country. Alkaline hot springs are found in some 250 areas throughout the country. The largest, Deildartunguhver, emits nearly 50 gallons (190 litres) of boiling water per second. ...
- Deimos
- (from the article "Ares") ...gods and even his parents, however, were not fond of him (Iliad v, 889 ff.). Nonetheless, he was accompanied in battle, by his sister Eris (Strife) and his sons (by Aphrodite) Phobos and Deimos (Panic and Rout). Also associated with ...
- Deimos
- the outer and smaller of Mars's two moons. It was discovered telescopically with its companion moon, Phobos, by the American astronomer Asaph Hall in 1877 and named for one of the sons of Ares, the Greek counterpart of the Roman ... [1 Related Articles]
- Deinonychus
- long-clawed carnivorous dinosaurs that flourished in western North America during the Early Cretaceous Period (99 million to 65 million years ago). A member of the dromaeosaur group, Deinonychus was bipedal, walking on two legs, as did all theropod dinosaurs. Its ... [3 Related Articles]
- deinstitutionalization
- (from the article "mental disorder") Between about 1850 and 1950 there was a steady increase in the number of patients staying in mental hospitals. In England and Wales, for example, there were just over 7,000 such patients in 1850, nearly 120,000 in 1930, and nearly ...
- Deioces
- petty Median chieftain subject to the kingdom of Mannai in modern Iranian Azerbaijan; later tradition made him the founder of the Median empire. [2 Related Articles]
- Deiotarus
- tetrarch of the Tolistobogii (of western Galatia, now in western Turkey), later king of all Galatia, who, as a faithful ally of the Romans, became involved in the struggles between the Roman generals that led to the fall of the ...
- Deiphobus
- (from the article "Helen") ...she chose Menelaus, Agamemnon's younger brother. During an absence of Menelaus, however, Helen fled to Troy with Paris, son of the Trojan king Priam; when Paris was slain, she married his brother Deiphobus, whom she betrayed to Menelaus when Troy ...
- Deiphon
- genus of trilobites (extinct arthropods) easily recognized in fossil form in Silurian rocks in North America because of its highly unusual shape (the Silurian Period began 438 million years ago and ended 408 million years ago). The pleural lobes (at ...
- Deir Tasa
- (from the article "Tasian culture") The Tasian culture is best known from evidence found on the east bank of the Nile River at al-Badari and at Deir Tasa. Tasian remains are somewhat intermingled with the materials of the subsequent Badarian stage, and, although the total ...
- Deira
- a northern Anglo-Saxon kingdom in Britain which, by the last quarter of the 7th century AD, had been united with its neighbour Bernicia (q.v.) to form the kingdom of Northumbria. Deira stretched from the Humber to the Tees River. There ... [2 Related Articles]
- Deirdre
- in early Irish literature, the gentle and fair heroine of The Fate of the Sons of Usnech (Oidheadh Chloinne Uisneach), the great love story of the Ulster cycle. First composed in the 8th or 9th century, the story was revised ...
- Deisenhofer, Johann
- German biochemist who, along with Hartmut Michel and Robert Huber, received the Nobel Prize for Chemistry in 1988 for their determination of the structure of certain proteins that are essential to photosynthesis. [1 Related Articles]
- Deism
- an unorthodox religious attitude that found expression among a group of English writers beginning with Edward Herbert (later 1st Baron Herbert of Cherbury) in the first half of the 17th century and ending with Henry St. John, 1st Viscount Bolingbroke, ... [20 Related Articles]
- Deiss, Joseph
- (from the article "Switzerland") Area: 41,284 sq km (15,940 sq mi) | Population (2004 est.): 7,392,000 | Capitals: Bern (administrative) and Lausanne (judicial) | Head of state and government: President Joseph Deiss |
- Deiters cell
- (from the article "ear, human") Each outer hair cell is supported by a phalangeal cell of Deiters, or supporting cell, which holds the base of the hair cell in a cup-shaped depression (Figure 6). From each Deiters' cell a projection extends upward to the stiff ...
- deja vu
- (from the article "memory abnormality") The deja vu experience has aroused considerable interest and is occasionally felt by most people, especially in youth or when they are fatigued. It has also found its way into literature, having been well described by, among other creative writers, ...
- Dejazet, Virginie
- (from the article "Sardou, Victorien") ...an illusion of life, and this largely accounts for his rapid decline in popularity. Madame Sans-Gene, his last success, is still performed. His initial successes he owed to the actress Virginie Dejazet, and several of his 70 works were written ...
- dejection
- (from the article "astrology") ...of which is also dominated by a planet. Scattered at various points throughout the ecliptic are the planets' degrees of exaltation (high influence), opposite to which are their degrees of dejection (low influence). Various arcs of the zodiac, then, are ...
- DeKalb
- city, DeKalb county, north-central Illinois, U.S. It lies on the south branch of the Kishwaukee River, about 60 miles (100 km) west of Chicago. Founded in 1837, it was called Buena Vista and then Huntley's Grove (for city founder Russell ...
- Dekanawida
- (from the article "Iroquois Confederacy") Tradition credits the formation of the confederacy, between 1570 and 1600, to Dekanawidah, born a Huron, who is said to have persuaded Hiawatha, an Onondaga living among Mohawks, to abandon cannibalism and advance "peace, civil authority, righteousness, and the great ...
- Deken, Aagje
- writer and collaborator with Betje Wolff (q.v.) on the first Dutch novel, De historie van mejuffrouw Sara Burgerhart, 2 vol. (1782; "The History of Miss Sara Burgerhart"). [2 Related Articles]
- Dekker, Desmond
- Jamaican singer-songwriter (b. July 16, 1941, Kingston, Jam.-d. May 25, 2006, Thornton Heath, Eng.), was the first Jamaican to become an international pop music star, with hits in three genres: ska, rock steady, and reggae. He was working as a ...
- Dekker, Thomas
- English dramatist and writer of prose pamphlets who is particularly known for his lively depictions of London life. [7 Related Articles]
- Del Giudice, Daniele
- (from the article "Italian literature") Among younger voices, two extremely professional authors-cosmopolitan minimalist Andrea De Carlo and painstaking observer and stylist Daniele Del Giudice-were "discovered" in the early 1980s by Italo Calvino. In novels such as Macno (1984; Eng. trans. Macno) and Yucatan (1986; Eng. ...
- Del Monte Foods
- American corporation engaged primarily in processing, canning, and distributing food. It is a major grower and distributor of bananas and pineapples, and it owns subsidiaries engaged in trucking, public warehousing, institutional food service and vending, building maintenance, and security services. ...
- Del Rio
- city, seat (1885) of Val Verde county, southwestern Texas, U.S. It lies along the Rio Grande, there bridged to Ciudad Acuna, Mexico, 145 miles (233 km) west of San Antonio. The original Spanish mission of San Felipe del Rio (c. ...
- del Rio, Andres Manuel
- (from the article "vanadium") Vanadium was discovered (1801) by the Spanish mineralogist Andres Manuel del Rio, who named it erythronium but eventually came to believe it was merely impure chromium. The element was rediscovered (1830) by the Swedish chemist Nils Gabriel Sefstrom, who named ...
- Del Toro, Benicio
- (from the article "2000: Best Supporting Actor") Other Nominees
- Delaborde, J. B.
- (from the article "electronic instrument") Electricity was used in the design of musical instruments as early as 1761, when J.B. Delaborde of Paris invented an electric harpsichord. Experimental instruments incorporating solenoids, motors, and other electromechanical elements continued to be invented throughout the 19th century. One ...
- Delacour, Jean Theodore
- French-American aviculturist known for discovering and rearing some of the world's rarest birds. [1 Related Articles]
- Delacroix, Eugene
- the greatest French Romantic painter, whose use of colour was influential in the development of both Impressionist and Post-Impressionist painting. His inspiration came chiefly from historical or contemporary events or literature, and a visit to Morocco in 1832 provided him ... [14 Related Articles]
- delafossite
- metallic, black copper and iron oxide (CuFeO2) that is found as a secondary mineral associated with other oxide minerals of copper and iron in Sonora, Mex.; Pedroso, Spain; and Pfaffenreuth, Ger. It is abundant in Bisbee, Ariz., and also occurs ...
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