- Ardaban IV (king of Parthia)
ancient Iran: Dissolution of the Parthian state: …in 79 by the ephemeral Artabanus IV (80/81), who was then replaced permanently by Pacorus II. During his reign the country showed signs of a profound decomposition. The barons refused to obey the crown. In the provinces the army and the finances were in the hands of the nobility. Aristocrats…
- Ardabda (Ukraine)
Feodosiya, city, southern Ukraine. It lies on the southern coast of the Crimean Peninsula on the western shores of Feodosiya Bay. The city is located on the site of the ancient colony Theodosia, the native name of which was Ardabda. Terra-cottas show it to have been inhabited in the 6th century
- Ardabīl (Iran)
Ardabīl, city, capital of Ardabīl province, northwestern Iran, 38 miles (61 km) from the Caspian Sea. It stands on an open plain 4,500 feet (1,400 metres) above sea level, just east of Mount Sabalān (15,784 feet [4,811 metres]), where cold spells occur until late spring. Persian historians have
- Ardabīl Carpet
Ardabīl Carpet, either of a pair of Persian carpets that are among the most famous examples of early classical Persian workmanship. The larger one measures 34 × 17.5 feet (10.4 × 5.3 metres), and both carpets have a silk warp and wool pile. The carpets were completed in 1539–40, during the reign of
- Ardagh Chalice (Irish ecclesiastical metalwork)
Ardagh Chalice, large, two-handled silver cup, decorated with gold, gilt bronze, and enamel, one of the best-known examples of Irish ecclesiastical metalwork. It was discovered in 1868, together with a small bronze cup and four brooches, in a potato field in Ardagh, County Limerick, Ire. The
- ʿarḍah (dance)
Saudi Arabia: The arts: …line dance known as the ʿarḍah, which includes lines of men, frequently armed with swords or rifles, dancing to the beat of drums and tambourines.
- Ardalan, Nader (Iranian architect)
Islamic arts: Islamic art under European influence and contemporary trends: …Islamic architecture include the Iranians Nader Ardalan and Kamran Diba, the Iraqis Rifat Chaderji and Mohamed Makiya, the Jordanian Rasem Badran, and the Bangladeshi Mazharul Islam. A unique message was transmitted by the visionary Egyptian architect Hassan Fathy, who, in eloquent and prophetic terms, urged that the traditional
- Ardas (prayer)
Sikhism: The worship service: …and every service concludes with Ardas, a set prayer that is divided into three parts. The first part consists of a declaration of the virtues of all the Gurus, and the last part is a brief salutation to the divine name; neither part can be changed. The middle part of…
- Ardashīr I (Sāsānian king)
Ardashīr I was the founder of the Sāsānian empire in ancient Persia (reigned ad 224–241). Ardashīr was the son of Bābak, who was the son or descendant of Sāsān and was a vassal of the chief petty king in Persis, Gochihr. After Bābak got Ardashīr the military post of argabad in the town of Dārābgerd
- Ardashīr II (Sāsānian king)
Ardashīr II was the king of the Sāsānian empire in ancient Persia (reigned ad 379–383). During the reign of his brother Shāpūr II, he had been king of Adiabene (now a region of northeast Iraq), where he took part in the persecution of Christians. After Shāpūr’s death, he was set on the throne by
- Ardawan V (king of Parthia)
Artabanus V was the last king of the Parthian empire (reigned c. ad 213–224) in southwest Asia. He was the younger son of Vologases IV, who died probably in 207, and was ruling the Median provinces at the time of his rebellion (c. 213) against his brother, Vologases V. By 216 he had apparently
- Ardea (Italy)
Ardea, ancient town of the Rutuli people and now a modern village in the Lazio regione, west-central Italy. It lies 23 miles (37 km) south of Rome. In ancient times it was an important centre of the cult of Juno. Ardea developed into one of the most important Latin cities and was a member of the
- Ardea (bird genus)
heron: …crested members of the genus Ardea—especially the 130-cm (50-inch) great blue heron (A. herodias) of North America, with a wingspan of 1.8 metres (6 feet) or more, and the similar but slightly smaller gray, or common, heron (A. cinerea), widespread in the Old World. Largest of all is the goliath…
- Ardea cinerea (bird)
heron: …the similar but slightly smaller gray, or common, heron (A. cinerea), widespread in the Old World. Largest of all is the goliath heron (A. goliath) of Africa, a 150-cm (59-inch) bird with a reddish head and neck. The purple heron (A. purpurea) is a darker and smaller Old World form.
- Ardea goliath (bird)
heron: Largest of all is the goliath heron (A. goliath) of Africa, a 150-cm (59-inch) bird with a reddish head and neck. The purple heron (A. purpurea) is a darker and smaller Old World form.
- Ardea herodias (bird)
heron: …genus Ardea—especially the 130-cm (50-inch) great blue heron (A. herodias) of North America, with a wingspan of 1.8 metres (6 feet) or more, and the similar but slightly smaller gray, or common, heron (A. cinerea), widespread in the Old World. Largest of all is the goliath heron (A. goliath) of…
- Ardea purpurea (bird)
heron: The purple heron (A. purpurea) is a darker and smaller Old World form.
- Ardeatine cave massacre (World War II)
Albert Kesselring: …civilian hostages in the so-called Ardeatine cave massacre of March 1944, an atrocity committed in reprisal for an attack by Italian partisans on German soldiers. Sentenced to death on May 6, 1947, Kesselring later won commutation to life imprisonment. In 1952 he was pardoned and freed, and he became active…
- Ardèche (department, France)
Rhône-Alpes: Isère, Drôme, and Ardèche. In 2016 the Rhône-Alpes région was joined with the région of Auvergne to form the new administrative entity of Auvergne-Rhône-Alpes.
- Ardèche River (river, France)
Rhône River: Physiography: Although the tributaries—notably the Ardèche—rushing down into the Rhône from the Massif Central are formidable when in flood, the great Alpine rivers—the Isère and the Durance, joining the left bank—are the most important in their effect on riverbed deposits and on the volume of water. Below Mondragon the lower…
- Ardeidae (bird family)
ciconiiform: Annotated classification: Ciconiiformes Family Ardeidae (herons, egrets, and bitterns) Loose-plumaged wading birds of moderate to large size, most with slim body and long neck; bill usually long, straight, and sharp; legs medium to long, lower tibiae bare; partial web between outer and middle (sometimes also between middle and inner)…
- Ardeinae (bird)
heron: Herons are subdivided into typical herons, night herons, and tiger herons. Typical herons feed during the day. In breeding season some develop showy plumes on the back and participate in elaborate mutual-courtship posturing. Best known of the typical herons are the very large, long-legged and long-necked, plain-hued, crested members…
- Arden Quin, Carmelo (artist)
Concrete Invention: In 1944 the artists Carmelo Arden Quin, Gyula Kosice, Rhod Rothfuss, Tomás Maldonado, and others collectively produced the first and only issue of the illustrated magazine Arturo, with texts and reproductions of work by many artists, including Joaquín Torres García, Lidy Prati, Wassily Kandinsky, and Piet
- Arden, Elizabeth (American businesswoman)
Elizabeth Arden was a Canadian-born American businesswoman who developed a successful line of cosmetics and a chain of beauty salons and spas. Florence Graham briefly pursued nurse’s training, worked as a secretary, and held various other jobs before moving from Canada to New York City about 1908.
- Arden, Enoch (fictional character)
Enoch Arden, fictional character, protagonist of Alfred, Lord Tennyson’s narrative poem Enoch Arden
- Arden, Eve (American actress)
Eve Arden was an American actress best known for her role as the title character of Our Miss Brooks on radio (1948–56) and television (1952–56). Arden began her theatre career with the Henry Duffy Stock Company in San Francisco (1928–29) and made her Broadway debut in the 1934 Ziegfeld Follies. Her
- Arden, John (British playwright)
John Arden was one of the most important of the British playwrights to emerge in the mid-20th century. His plays mix poetry and songs with colloquial speech in a boldly theatrical manner and involve strong conflicts purposely left unresolved. Arden grew up in the industrial town of Barnsley, the
- Arden, Sharon (British businesswoman)
Ozzy Osbourne: Going solo: He then met and married Sharon Arden, who encouraged him to start a career as a solo artist. His first effort, achieved with the primary help of guitarist Randy Rhoads, was Blizzard of Ozz (1980). A multiplatinum success, thanks in part to the standout single “Crazy Train,” it was followed…
- Ardency: A Chronicle of the Amistad Rebels (poetry by Young)
12 Contemporary Black Authors You Must Read: Kevin Young: His book Ardency: A Chronicle of the Amistad Rebels (2011) is a “part libretto” and “part captivity epistle” that tells the story of the Africans who rebelled on the slave ship Amistad in 1839. Young has also published nonfiction, including Bunk: The Rise of Hoaxes, Humbug, Plagiarists,…
- Ardenne (region, Europe)
Ardennes, wooded plateau covering part of the ancient Forest of Ardennes, occupying most of the Belgian provinces of Luxembourg, Namur, and Liège; part of the Grand Duchy of Luxembourg; and the French département of Ardennes. It is an old plateau comprising the western extension of the Middle Rhine
- Ardenne, Manfred, Freiherr von (German physicist)
electron microscope: History: German physicist Manfred, Freiherr (baron) von Ardenne, and British electronic engineer Charles Oatley laid the foundations of transmission electron microscopy (in which the electron beam travels through the specimen) and scanning electron microscopy (in which the electron beam ejects from the sample other electrons that are then…
- Ardennes (region, Europe)
Ardennes, wooded plateau covering part of the ancient Forest of Ardennes, occupying most of the Belgian provinces of Luxembourg, Namur, and Liège; part of the Grand Duchy of Luxembourg; and the French département of Ardennes. It is an old plateau comprising the western extension of the Middle Rhine
- Ardennes (department, France)
Champagne-Ardenne: Aube, Marne, and Ardennes and was roughly coextensive with the historical province of Champagne.
- Ardennes, Battle of the (World War II)
Battle of the Bulge, (December 16, 1944–January 16, 1945), the last major German offensive on the Western Front during World War II—an unsuccessful attempt to push the Allies back from German home territory. The name Battle of the Bulge was appropriated from Winston Churchill’s optimistic
- Ardent, Raoul (French clergyman)
encyclopaedia: Historical development of topical works: …Mirror”) of a French preacher, Raoul Ardent (a follower of Gilbert de La Porrée, a French theologian), was the Summa de vitiis et virtutibus (“Summa [Exposition] of Faults and Virtues”). Raoul’s intent was to provide a modern authoritative account of the Christian attitude to the world. His plan was different…
- Ardeola ibis (bird)
egret: The cattle egret, Bubulcus (sometimes Ardeola) ibis, spends much of its time on land and associates with domestic and wild grazing animals, feeding on insects that they stir up and sometimes removing ticks from their hides. It is a compactly built heron, 50 cm long, white…
- Ardeotis arabs (bird)
bustard: The Arabian bustard (A. arabs) is found in Morocco and in northern tropical Africa south of the Sahara, as are a number of species belonging to several other genera. In Australia the bustard Choriotis australis is called turkey.
- Ardeotis kori (bird)
bustard: …paauw, the largest being the great paauw or kori bustard (Ardeotis kori). The Arabian bustard (A. arabs) is found in Morocco and in northern tropical Africa south of the Sahara, as are a number of species belonging to several other genera. In Australia the bustard Choriotis australis is called turkey.
- Ardeotis nigriceps (bird)
great Indian bustard, (Ardeotis nigriceps), large bird of the bustard family (Otididae), one of the heaviest flying birds in the world. The great Indian bustard inhabits dry grasslands and scrublands on the Indian subcontinent; its largest populations are found in the Indian state of Rajasthan.
- Ardern, Jacinda (prime minister of New Zealand)
Jacinda Ardern is a New Zealand politician who in August 2017 became leader of the New Zealand Labour Party and then in October 2017, at age 37, became the country’s youngest prime minister in more than 150 years. She resigned as prime minister in January 2023. The second of two daughters born to a
- Ardern, Jacinda Kate Laurell (prime minister of New Zealand)
Jacinda Ardern is a New Zealand politician who in August 2017 became leader of the New Zealand Labour Party and then in October 2017, at age 37, became the country’s youngest prime minister in more than 150 years. She resigned as prime minister in January 2023. The second of two daughters born to a
- Ardévol, José (Cuban composer)
Latin American music: The late 20th century and beyond: In Cuba, José Ardévol began to experiment with atonality and serialism after 1957; he profoundly influenced succeeding Cuban composers, most significantly Juan Blanco and Leo Brouwer. Blanco was particularly significant in the development of electronic music in his country; Brouwer was one of the most original figures…
- Ardh satya (film by Nihalani [1983])
Om Puri: …of others in the film Ardh satya (1983). His other notable films include the comedy Jaane bhi do yaaro (1983), the thriller Mirch masala (1987), the crime drama Maqbool (2003), and the caper comedy Singh Is Kinng (2008).
- Ardhamāgadhī (language)
South Asian arts: Literature: …own, Pāli in Buddhism and Ardhamāgadhī in Jainism. These languages, usually called Prākrits—that is, derivative as well as more “natural” languages—produced a vast and, again, mostly sacred literature. In a further development of these dialects, the early beginnings can be seen of modern Indo-Aryan languages of northern India: Bengali (also…
- Ardhanarishvara (Hindu deity)
Ardhanarishvara, composite male-female figure of the Hindu god Shiva together with his consort Parvati. As seen in many Indian and Southeast Asian sculptures, the right (male) half of the figure is adorned with the traditional ornaments of Shiva. Half of the hair is piled in a hairdress of matted
- Ardhas River (river, Bulgaria)
Arda River, river in Bulgaria, rising in the central Rhodope Mountains near the town of Smolyan and following a 180-mile (290-kilometre) course eastward past Kŭrdzhali and Ivaylovgrad to enter the Maritsa just west of Edirne, Tur., after a 23-mile (37-kilometre) course in Greece. The Bulgarian
- Ardi (hominin fossil)
Ardi, nickname for a partial female hominid skeleton recovered at Aramis, in Ethiopia’s Afar rift valley. Ardi was excavated between 1994 and 1997 and has been isotopically dated at 4.4 million years old. She is one of more than 100 specimens from the site that belong to Ardipithecus ramidus, a
- Ardiente paciencia (novel by Skármeta)
Antonio Skármeta: He followed these with Ardiente paciencia, a novel that tells the story of an extraordinary friendship that develops between the Chilean poet Pablo Neruda, living in exile, and his postman. Ardiente paciencia subsequently became Skármeta’s most popular work. It was translated into 20 languages and was adapted for the…
- Ardillières, Pierre Le Moyne d’Iberville et d’ (French-Canadian soldier and explorer)
Pierre Le Moyne d’Iberville was a French-Canadian naval hero and explorer, noted for his exploration and battles on behalf of the French in Hudson Bay and in the territory of Louisiana. The son of prominent Montreal fur trader Charles Le Moyne, Iberville spent his young manhood in raids against
- ardin (musical instrument)
African music: Harps: Examples are the ennanga (Uganda), ardin (Mauritania), kinde (Lake Chad region), and ngombi (Gabon).
- Ardinghello und die glückseligen Inseln (novel by Heinse)
Wilhelm Heinse: In Heinse’s famous novel Ardinghello und die glückseligen Inseln (1787; “Ardinghell and the Blessed Islands”), the hero is an artist and a dreamer who founds a utopia on a Greek island. Glorifying eroticism and the aesthetic life, it is a forerunner of the Künstlerroman (“artist novel”) of the Romantic…
- Ardipithecus (fossil hominin genus)
Ardipithecus, the earliest known genus of the zoological family Hominidae (the group that includes humans and excludes great apes) and the likely ancestor of Australopithecus, a group closely related to and often considered ancestral to modern human beings. Ardipithecus lived between 5.8 million
- Ardipithecus kadabba (fossil hominin)
Aramis: …that have yielded remains of Ardipithecus kadabba that date to between 5.2 and 5.8 million years ago. A toe bone recovered from this age range is unlike that of apes and has a diagnostically humanlike shape that indicates upright walking (bipedalism). This is part of the accumulating evidence confirming the…
- Ardipithecus ramidus (fossil hominin)
Aramis: 4-million-year-old fossils of Ardipithecus ramidus found in 1992 and named in 1994.
- Ardmore (Oklahoma, United States)
Ardmore, city, seat (1907) of Carter county, southern Oklahoma, U.S., north of the Red River, near Lake Texoma and the Texas state line. Founded in 1887 in Chickasaw Indian Territory after the arrival of the Atchison, Topeka and Santa Fe Railroad, the town was named for the Philadelphia suburb that
- Ardon, Mordecai (Israeli painter)
Mordecai Ardon was an eminent Israeli painter who combined jewel-like, brilliantly coloured forms with virtuoso brushwork. He created modern, semiabstract paintings that are deeply moving. Ardon emigrated from his native Poland to Germany, spending the years 1921–25 at the Weimar Bauhaus, where he
- Ardon, Mordekhai (Israeli painter)
Mordecai Ardon was an eminent Israeli painter who combined jewel-like, brilliantly coloured forms with virtuoso brushwork. He created modern, semiabstract paintings that are deeply moving. Ardon emigrated from his native Poland to Germany, spending the years 1921–25 at the Weimar Bauhaus, where he
- Ardra (historical kingdom, West Africa)
Benin: History of Benin: …area was the kingdom of Allada (Ardra), but in the 18th and 19th centuries its place was taken by Dahomey. In the north, the largest group was the Bariba, the most important state being the kingdom of Nikki, which formed part of a confederacy including other Bariba states located in…
- Ards (former district, Northern Ireland, United Kingdom)
Ards, former district (1973–2015) within the former County Down, now in the Ards and North Down district, eastern Northern Ireland. The former district extended northward from just south of the village of Killinchy along the western shoreline of Strangford Lough (inlet of the sea) to the town of
- ARDS (pathology)
MERS: Complications include acute respiratory distress syndrome (ARDS), disseminated intravascular coagulation (DIC), kidney failure, and pericarditis (inflammation of the membranous sac that envelops the heart). More than 60 percent of infected persons who develop serious illness require hospitalization, and individuals die in more than 30 percent of reported…
- Ards and North Down (district, Northern Ireland)
Ards and North Down, district, eastern Northern Ireland. It is bounded to the north by Belfast Lough, to the east by the Irish Sea, to the south by the Newry, Mourne and Down district, to the west by the Lisburn and Castlereagh City district, and to the northwest by the Belfast City district. Much
- Arduin of Ivrea (Italian leader)
Henry II: …into northern Italy to subdue Arduin of Ivrea, who had styled himself king of Italy. His sudden interference led to bitter fighting and atrocities, and although Henry was crowned king in Pavia on May 15, 1004, he returned home, without defeating Arduin, to pursue his campaigns against Bolesław. In 1003…
- Arduino, Giovanni (Italian geologist)
Giovanni Arduino was the father of Italian geology, who established bases for stratigraphic chronology by classifying the four main layers of the Earth’s crust as Primary, Secondary, Tertiary, and Quaternary. From an early age, Arduino showed an interest in mining, establishing a reputation
- Ardvī (Iranian mythology)
ancient Iranian religion: Cosmography: …down which flowed the river Ardvī. The earth was divided into six continents surrounding the central continent, Khvaniratha, the locus of Aryāna Vaijah, the Aryan land (i.e., Iran).
- Ardvī Sūrā (Hindu deity)
Sarasvati, Hindu goddess of learning and the arts, especially music. First appearing as the personification of the sacred river Sarasvati and also identified with Vac, the goddess of speech, she is later named the consort, daughter, or granddaughter of the god Brahma. She is regarded as the
- Ardvī Sūrā Anāhitā (Iranian goddess)
Anāhiti, ancient Iranian goddess of royalty, war, and fertility; she is particularly associated with the last. Possibly of Mesopotamian origin, her cult was made prominent by Artaxerxes II, and statues and temples were set up in her honour throughout the Persian empire. A common cult of the various
- Ardys (king of Lydia)
Anatolia: The Cimmerians, Lydia, and Cilicia, c. 700–547 bce: Ardys, his successor on the Lydian throne (651–c. 615), again attacked Miletus and took Priene. During his reign Sardis was taken a second time, that time by the Treres, a Thracian tribe that operated in close connection with the Cimmerians. According to Assyrian sources, Ardys…
- are (unit of area measurement)
are, unit of area in the metric system, equal to 100 square metres and the equivalent of 0.0247 acre. Its multiple, the hectare (equal to 100 ares), is the principal unit of land measurement for most of the world. The are was the basic unit of area when the metric system was first decreed in France
- Are 401(k) fees affecting your retirement savings?
Don’t let fees nibble down your nest egg.You know you’re supposed to save for retirement, and if your employer offers a 401(k) plan, building a nest egg can be a cinch. But the fees charged by some 401(k) plans can take a toll on the returns your retirement account should be racking up, leaving you
- Are central bank digital currencies the future of global money?
The theoretical vs. the reality.If you’ve been following cryptocurrency news or news on macroeconomic developments, you’ve probably come across the term “central bank digital currency” (CBDC). What is a CBDC? A central bank digital currency is a form of digital money that’s pegged to a nation’s
- Are markets efficient? How Eugene Fama kicked off a controversy
Research is futile?One of the most controversial topics in finance is the efficient-market hypothesis, developed by Eugene Fama in 1965. In a nutshell, the theory says that the financial markets are efficient, so no one can gain an edge in them. Fama’s paper “The Behavior of Stock-Market Prices,”
- Are These Our Children? (film by Ruggles [1931])
Wesley Ruggles: The sound era: …then made the socially conscious Are These Our Children? (1931), a cautionary tale of a youth (played by Eric Linden) who turns to a life of crime and ends up sentenced to death. His films from 1932 include No Man of Her Own, a solid romance with Clark Gable and…
- Are We Done Yet? (film by Carr [2007])
Ice Cube: Film and TV career: …We There Yet? (2005) and Are We Done Yet? (2007), both of which also featured him in a lead role. He coproduced the highly successful N.W.A biopic Straight Outta Compton (2015), in which his son, O’Shea Jackson, Jr., played Ice Cube. Ice Cube and his wife, Kimberly Woodruff, whom he…
- Are We There Yet? (film by Levant [2005])
Ice Cube: Film and TV career: …credits on several more, including Are We There Yet? (2005) and Are We Done Yet? (2007), both of which also featured him in a lead role. He coproduced the highly successful N.W.A biopic Straight Outta Compton (2015), in which his son, O’Shea Jackson, Jr., played Ice Cube. Ice Cube and…
- Are You Experienced? (album by the Jimi Hendrix Experience)
Jimi Hendrix: …followed before their first album, Are You Experienced?, was released in the summer of 1967, when it was second in impact only to the Beatles’ Sgt. Pepper’s Lonely Hearts Club Band. Its immediate successor, Axis: Bold as Love, followed that December. On Paul McCartney’s recommendation, Hendrix was flown to California…
- Are You Here (film by Weiner [2013])
Matthew Weiner: …the poorly received comedy film Are You Here (2013), which chronicles the misadventures of two dissipated layabouts, played by Owen Wilson and Zach Galifianakis.
- Are you really ready for early retirement?
There’s a lot to consider.Do you dream of early retirement? If so, you’re not alone. It’s tantalizing to think of ditching the rat race early to enjoy more of your life. Key Points There are several potential strategies for those who’d like to opt out of working before their 60s. But is retiring
- Are You Smarter Than a 5th Grader? (television program)
quiz show: …Be a Millionaire (1999–2020), and Are You Smarter Than a 5th Grader? (2007–10, 2015, 2019– ).
- Are You There God? It’s Me, Margaret (novel by Blume)
Judy Blume: …literature with the publication of Are You There God? It’s Me, Margaret, a preteen novel told from the perspective of Margaret Simon, an 11-year-old girl whose family has moved to a new town. Margaret, who has a Christian mother and a Jewish father, struggles to understand her developing body and…
- Are You There, Chelsea? (American television show)
Chelsea Handler: Are You There, Chelsea?, an NBC sitcom based on Handler’s books, aired in 2012. Handler served as executive producer for the show and appeared in a supporting role. Her later works included Life Will Be the Death of Me:…and You Too! (2019), which chronicles her…
- Are You There, Vodka? It’s Me, Chelsea (work by Handler)
Chelsea Handler: Handler’s second book, Are You There, Vodka? It’s Me, Chelsea (2008) debuted at the top of the New York Times nonfiction best-seller list. It was followed by Chelsea Chelsea Bang Bang (2010) and Lies That Chelsea Handler Told Me (2011), a collection of anecdotes written by her friends…
- ‘Are‘are (people)
Oceanic music and dance: The Solomon Islands: The ‘Are‘are people of Malaita, in the Solomon Islands, distinguish four types of panpipe ensemble and more than 20 musical types. The music of panpipe ensembles enjoys the highest prestige among the ‘Are‘are. They have an extensive system of thought about music that centres on ‘au,…
- area (mathematics)
length, area, and volume: segment (see distance formulas), area is the size of a closed region in a plane, and volume is the size of a solid. Formulas for area and volume are based on lengths. For example, the area of a circle equals π times the square of the length of its…
- Area (Illinois, United States)
Mundelein, village, Lake county, northeastern Illinois, U.S. A suburb of Chicago, it lies 35 miles (55 km) north-northwest of downtown. Before settlement the area was inhabited by Potawatomi Indians. The village was founded in 1835 and was successively known as Mechanics Grove, for the English
- area 17 (anatomy)
human eye: Cortical neurons: …of responses from neurons in area 17 there was an interesting change in the nature of the receptive fields; there was still the organization into excitatory (on) and inhibitory (off) zones, but these were linearly arranged, so that the best stimulus for evoking a response was a line, either white…
- Area 51 (military installation, Nevada, United States)
Area 51, secret U.S. Air Force military installation located at Groom Lake in southern Nevada. It is administered by Edwards Air Force Base in southern California. The installation has been the focus of numerous conspiracies involving extraterrestrial life, though its only confirmed use is as a
- area bombing (warfare)
Sir Arthur Travers Harris, 1st Baronet: …Air Marshal Harris developed the saturation technique of mass bombing—that of concentrating clouds of bombers in a giant raid on a single city, with the object of completely demolishing its civilian quarters. Conducted in tandem with American precision bombing of specific military and industrial sites by day, saturation bombing was…
- area method (landfill construction)
solid-waste management: Constructing the landfill: …topography or groundwater conditions, the area method may be practiced, resulting in a mound or hill rising above the original ground. Since no ground is excavated in the area method, soil usually must be hauled to the site from some other location. Variations of the area method may be employed…
- area mining (mining)
strip mining: …strip-mining techniques are classified as area mining or contour mining on the basis of the deposit geometry and type. The cycle of operations for both techniques consists of vegetation clearing, soil removal, drilling and blasting of overburden (if needed), stripping, removal of the coal or other mineral commodity, and reclamation.
- area postrema (physiology)
human nervous system: Vasopressin and cardiovascular regulation: The area postrema, which lies on the floor of the fourth ventricle in the medulla oblongata, is also involved as a special chemical sensor of the plasma.
- area rule (physics)
area rule, aircraft design principle formulated by American engineer Richard Whitcomb which stated that the drag on an airplane flying at high speed is a function of the aircraft’s entire cross-sectional area. Bodies which pass through the so-called transonic zone—the zone separating speeds below
- area sampling (statistics)
statistics: Sample survey methods: …of cluster sampling is called area sampling, where the clusters are counties, townships, city blocks, or other well-defined geographic sections of the population.
- area strip mining
coal mining: Mining methods: …(1) contour strip mining, (2) area strip mining, (3) open-pit mining, and (4) auger mining.
- area studies (social research)
area studies, multidisciplinary social research focusing on specific geographic regions or culturally defined areas. The largest scholarly communities in this respect focus on what are loosely defined as Asian, African, Latin American, or Middle Eastern studies, together with a variety of subfields
- area, culture (anthropological concept)
culture area, in anthropology, geography, and other social sciences, a contiguous geographic area within which most societies share many traits in common. Delineated at the turn of the 20th century, it remains one of the most widely used frameworks for the description and analysis of cultures.
- Area, the
Law of the Sea: …seas is known as the International Seabed Area (also known as “the Area”), for which the 1982 convention established a separate and detailed legal regime. In its original form this regime was unacceptable to developed countries, principally because of the degree of regulation involved, and was subsequently modified extensively by…
- Areas and Volumes of the Great Lakes
The combined area of the Great Lakes (some 94,250 square miles [244,106 square km]) represents the largest surface of fresh water in the world. The lakes—Superior, Michigan, Huron, Erie, and Ontario—are located in east-central North America and provide a natural border between Canada and the United
- areas, law of (astronomy)
Kepler’s second law of planetary motion, in astronomy and classical physics, one of three laws describing the motions of the planets in the solar system and which states that a radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time. The validity of Kepler’s
- Areca catechu
betel: …seed of the areca, or betel, palm (Areca catechu), family Arecaceae, and the betel leaf is from the betel pepper, or pan plant (Piper betle), family Piperaceae. Betel chewing is a habit of an estimated one-tenth of the world’s population, and betel is the fourth most common psychoactive drug in…
- areca nut (fruit)
betel: The betel nut is the seed of the areca, or betel, palm (Areca catechu), family Arecaceae, and the betel leaf is from the betel pepper, or pan plant (Piper betle), family Piperaceae. Betel chewing is a habit of an estimated one-tenth of the world’s population, and…