• Rastrelliger (fish genus)

    mackerel: …the family Scombridae include the Indian mackerels (Rastrelliger), which are rather stout, commercially valuable Indo-Australian fishes up to 38 cm long, and the frigate mackerels (Auxis), which are small, elongated fishes found worldwide and distinguished by a corselet of enlarged scales around the shoulder region that extend along the lateral…

  • Rastriya Swatantra Party (political party, Nepal)

    Nepal: Federal republic: …figure among younger voters—led his Rastriya Swatantra Party (RSP) to secure a large majority of parliamentary seats. The RSP’s victory over the traditional parties that had dominated Nepalese politics for decades signaled a major shift toward a younger generation of political leadership. Karki stepped down following the election, and Shah…

  • Rastyapino (Russia)

    Dzerzhinsk, city, Nizhegorod oblast (province), western Russia. Dzerzhinsk lies along the Oka River upstream from its confluence with the Volga River at Nizhny Novgorod. Part of the Nizhny Novgorod metropolitan area, Dzerzhinsk and its satellite towns stretch for 15 miles (24 km) along the Oka. The

  • rasūl (Islam)

    prophecy: The centrality of prophecy in Islam: …himself as the messenger (rasūl) of Allah, the final messenger in a long chain that had begun with Noah and run through Jesus. As Allah’s rasūl, Muhammad saw his first mission to be that of warning the Arab peoples of the impending doomsday. No doubt Muhammad was influenced by…

  • Rasul v. Bush (law case)

    Rasul v. Bush, case in which the U.S. Supreme Court ruled on June 28, 2004, that U.S. courts have jurisdiction to hear habeas corpus petitions filed on behalf of foreign nationals imprisoned at the Guantánamo Bay detention camp on the U.S. naval base at Guantánamo Bay, Cuba, because the base, which

  • Rasulid dynasty (Muslim dynasty)

    Rasulid dynasty, Muslim dynasty that ruled Yemen and Ḥaḍramawt (1229–1454) after the Ayyubids of Egypt abandoned the southern provinces of the Arabian Peninsula. The family took its name from Muḥammad ibn Hārūn, who, as a messenger (Arabic rasūl) for an Abbasid caliph, was known by the epithet

  • Rasun-Anterselva (Italy)

    Rasen-Antholz, comune (municipality) located in the Italian region of Trentino–Alto Adige. It is a small mountain community consisting of six Fraktionen (villages or subdivisions within a municipality). Rasen-Antholz has become a center for winter sports. German is the native language of 98 percent

  • Rasy, Elisabetta (Italian author)

    Italian literature: Women writers: …estasi (1985; “The First Ecstasy”) Elisabetta Rasy, moving on from criticism to fiction, endeavoured to re-create the mystic and ascetic consciousness of St. Thérèse of Lisieux. The spirit of Edgar Allan Poe lives on in the precisely related but arcane and enigmatic tales of La grande Eulalia (1988; “The Great…

  • rat (rodent genus)

    rat, (genus Rattus), the term generally and indiscriminately applied to numerous members of several rodent families having bodies longer than about 12 cm, or 5 inches. (Smaller thin-tailed rodents are just as often indiscriminately referred to as mice.) In scientific usage, rat applies to any of 56

  • rat (rodent grouping)

    rat: ) In scientific usage, rat applies to any of 56 thin-tailed, medium-sized rodent species in the genus Rattus native to continental Asia and the adjacent islands of Southeast Asia eastward to the Australia-New Guinea region. A few species have spread far beyond their native range in close association with…

  • Rat Buri (Thailand)

    Ratchaburi, town, western Thailand, west of Bangkok. Prehistoric relics, cave drawings, and old Buddhist temples indicate that the site of Ratchaburi town, on the Mae Klong River, has been inhabited from early times. The town is now a river port, a station of the Bangkok-Singapore railway, and a

  • rat flea (insect)

    flea: General features: …distributed with some—such as the rat flea and the mouse flea—having been carried all over the world by humans. Native species of fleas are found in polar, temperate, and tropical regions.

  • Rat Islands (islands, Alaska, United States)

    Rat Islands, uninhabited group of the Aleutian Islands, southwestern Alaska, U.S. They extend about 110 miles (175 km) southeast of the Near Islands and west of the Andreanof Islands. The largest of the islands are Amchitka, Kiska, and Semisopochnoi. Separated from the Andreanof Islands by Amchitka

  • rat kangaroo (marsupial)

    rat kangaroo, any of the 11 living species of Australian and Tasmanian marsupials constituting the families Potoroidae and Hypsiprymnodontidae, related to the kangaroo family, Macropodidae. Other potoroids are known only as fossils; the Potoroidae were already separated from the Macropodidae by the

  • rat lungworm (nematode)

    escargot: …by a parasite called the rat lungworm (Angiostrongylus cantonensis), which causes eosinophilic meningitis. Snails can carry other parasites as well. Escargots, therefore, should not be eaten raw.

  • rat lungworm disease (pathology)

    lungworm: …but in humans it causes rat lungworm disease, which is characterized by eosinophilic meningitis, an elevation of the white blood cells known as eosinophils in the central nervous system.

  • rat mite (arachnid)

    mite: …northern fowl mite, and the rat mite, all of which attack humans. In addition, there are nasal mites of dogs and birds, lung mites of monkeys, and predatory mites, which are sometimes of benefit in controlling plant-feeding mites.

  • rat opossum (marsupial)

    rat opossum, (family Caenolestidae), any of six species of South American marsupials in the order Paucituberculata. Rat opossums include the common shrew opossums (genus Caenolestes) with four species, the Incan caenolestid (Lestoros inca), and the Chilean shrew opossum (Rhyncholestes raphanurus).

  • Rat Pack (American entertainers)

    Rat Pack, a close-knit group of Las Vegas entertainers who frequently performed together onstage and in films in the 1960s. The core members of the Rat Pack were Frank Sinatra, Dean Martin, and Sammy Davis, Jr. The Rat Pack became notorious for their wild carousing and acquired a legendary status

  • Rat Race, The (film by Mulligan [1960])

    Robert Mulligan: …to the big screen with The Rat Race, a romantic comedy starring Tony Curtis and Debbie Reynolds; it was based on a play by Garson Kanin, who also wrote the screenplay. Mulligan reteamed with Curtis on The Great Impostor (1961), a biopic about impersonator Ferdinand Waldo Demara, Jr. Next was…

  • Rat Race, The (work by Kanin)

    Garson Kanin: Screenplays, theatrical work, and novels: …Happen to You (1954) and The Rat Race (1960; based on his play and novel of the same name). He also penned several scripts for the small screen, including Hardhat and Legs (1980), a TV movie that was his final collaboration with Gordon, who died in 1985.

  • rat snake (reptile)

    rat snake, any of between 40 and 55 species of the genus Elaphe, of the family Colubridae and similar forms. They occur in North America, Europe, and Asia east to the Philippines. Most are found in woodlands and around farm buildings. They hunt rats and mice and kill them by constriction. They also

  • Rat, The (novel by Grass)

    Günter Grass: Other novels and fictional works: …nuclear war; Die Rättin (1986; The Rat), a vision of the end of the human race that expresses Grass’s fear of nuclear holocaust and environmental disaster; and Unkenrufe (1992; The Call of the Toad), which concerns the uneasy relationship between Poland and Germany.

  • rat-bite fever (pathology)

    rat-bite fever, relapsing type of infection in which the causative bacteria are transmitted to humans by the bite of an infected rat. The disease occurs primarily in Asia and is caused by the bacterium Spirillum minus. Symptoms of spirillary rat-bite fever include infection at the site of

  • rat-tail (fish)

    grenadier, any of about 300 species of abundant deep-sea fishes of the family Macrouridae found along the ocean bottom in warm and temperate regions. The typical grenadier is a large-headed fish with a tapered body ending in a long, ratlike tail bordered above and below by the anal and second

  • rat-tailed maggot (insect)

    hover fly: The rat-tailed maggots (larvae) of the drone fly (Eristalis tenax), which live in drains and polluted waters, have a telescopic breathing tube at the rear that gives them their common name.

  • rat-tailed opossum (marsupial)

    brown four-eyed opossum, (Metachirus nudicaudatus), the only large American marsupial (family Didelphidae, subfamily Didelphinae) that lacks a pouch. It gets its name from its brownish to yellowish fur colour and the creamy white spot above each eye. This opossum inhabits lowland tropical forests

  • rat-tailed possum (marsupial)

    brown four-eyed opossum, (Metachirus nudicaudatus), the only large American marsupial (family Didelphidae, subfamily Didelphinae) that lacks a pouch. It gets its name from its brownish to yellowish fur colour and the creamy white spot above each eye. This opossum inhabits lowland tropical forests

  • Rat-Trap (film by Gopalakrishnan [1982])

    Adoor Gopalakrishnan: Rat-Trap examines the end of feudalism in Kerala through one family’s fall from power. The Walls is set in a British colonial prison in the 1940s and is about a political activist who falls in love with an unseen woman in a neighbouring prison after…

  • rata (tree and fruit)

    Garcinia: Rata, or yellow mangosteen (G. tinctorea), produces a peach-sized yellow fruit with a pointed end and acid-flavoured buttery yellow flesh. Bacupari (G. gardneriana) is native to South America and produces an edible aril. Garlic fruit, or bitter garcinia (G. spicata), is planted as an ornamental…

  • Ratak (island chain, Marshall Islands)

    Marshall Islands: …parallel chains of coral atolls—the Ratak, or Sunrise, to the east and the Ralik, or Sunset, to the west. The chains lie about 125 miles (200 km) apart and extend some 800 miles northwest to southeast.

  • RATAN-600 telescope (telescope, Zelenchukskaya, Russia)

    radio telescope: Filled-aperture telescopes: The Russian RATAN-600 telescope (RATAN stands for Radio Astronomical Telescope of the Academy of Sciences), located near Zelenchukskaya in the Caucasus Mountains, has 895 reflecting panels, each 7.4 metres (24.3 feet) high, arranged in a ring 576 metres (1,890 feet) in diameter. Using long parabolic cylinders, standing…

  • Rātana church (Māori religion)

    Rātana church, 20th-century religious awakening among the New Zealand Māori and a national political influence, especially during the period 1943–63, when its members held all four Māori parliamentary seats in the national capital. The Rātana church was founded by Tahupōtiki Wiremu Rātana, a

  • Ratana, Tahupotiki Wiremu (New Zealand religious leader)

    Rātana church: …Rātana church was founded by Tahupōtiki Wiremu Rātana, a Methodist Māori farmer who acquired a reputation as a visionary and faith healer. News of his extraordinary gifts drew Māori (and some whites) from all parts of New Zealand, who came to hear him preach his doctrine of moral reform under…

  • Ratanpur (ancient city, India)

    Bilaspur: Just north lies Ratanpur, an ancient Hindu capital of the Haihaya dynasty of Chhattisgarh; its ruins date from the 8th century ce. A major rail junction with extensive workshops, Bilaspur has agricultural trade and is a centre of rice and flour milling, sawmilling, and the manufacture of shellac.…

  • Ratanpur (Indian family)

    Kalachuri dynasty: Sarayupara and Ratanpur: The Ratanpur Kalachuris, who first ruled from Tummana and later from Ratanpur (16 miles [26 km] north of Bilaspur), were distantly related to, and feudatories of, the Tripuri Kalachuris. Beginning to rule in the early 11th century, they gained prominence under Jajalladeva I in the early…

  • ratas, Las (work by Delibes)

    Miguel Delibes: Smoke on the Ground).

  • ratas, Las (work by Bianco)

    José Bianco: The Rats is a psychological novel, with a complicated but flawlessly constructed plot that leads to the poisoning of the protagonist. Bianco’s narrator has a complicated psychological makeup that is elegantly drawn, and the plot develops inexorably yet unexpectedly to the surprising ending. Shadow Play…

  • ratatouia (stew)

    ratatouille, seasonal vegetable stew of Provençal origin, comprising squash, tomatoes, and other garden vegetables and herbs. The teeming summer gardens of Mediterranean France are the inspiration for and source of ratatouille, a dish whose name is taken from two related words: ratouiller, meaning

  • Ratatouille (animated film by Bird and Pinkava [2007])

    Will Arnett: Education and career: …several hit animated movies, including Ratatouille (2007), Despicable Me (2010), and Teen Titans GO! To the Movies (2018). He notably voiced the character of Batman in the Lego film and television franchise, including in The Lego Movie (2014) and its sequel, The Lego Movie 2: The Second Part (2019),

  • ratatouille (stew)

    ratatouille, seasonal vegetable stew of Provençal origin, comprising squash, tomatoes, and other garden vegetables and herbs. The teeming summer gardens of Mediterranean France are the inspiration for and source of ratatouille, a dish whose name is taken from two related words: ratouiller, meaning

  • Ratburi (Thailand)

    Ratchaburi, town, western Thailand, west of Bangkok. Prehistoric relics, cave drawings, and old Buddhist temples indicate that the site of Ratchaburi town, on the Mae Klong River, has been inhabited from early times. The town is now a river port, a station of the Bangkok-Singapore railway, and a

  • Ratcatcher’s House (building, Hameln, Germany)

    Hameln: …notable half-timbered Renaissance houses, the Rattenfängerhaus (“Ratcatcher’s House”) and the Hochzeitshaus (“Wedding House”). Pop. (2003 est.) 58,902.

  • Ratcha Anachak Thai

    Thailand, country located in the centre of mainland Southeast Asia. Located wholly within the tropics, Thailand encompasses diverse ecosystems, including the hilly forested areas of the northern frontier, the fertile rice fields of the central plains, the broad plateau of the northeast, and the

  • Ratchaburi (Thailand)

    Ratchaburi, town, western Thailand, west of Bangkok. Prehistoric relics, cave drawings, and old Buddhist temples indicate that the site of Ratchaburi town, on the Mae Klong River, has been inhabited from early times. The town is now a river port, a station of the Bangkok-Singapore railway, and a

  • Ratched (American television series)

    Sarah Paulson: Projects with Ryan Murphy: …Ratched in Netflix’s horror series Ratched, a reimagining, cocreated by Murphy, of the origins of the wicked character from Ken Kesey’s psychological novel One Flew Over the Cuckoo’s Nest. She then played Linda Tripp, who had secretly recorded Monica Lewinsky divulging details of her affair with U.S. Pres. Bill Clinton…

  • ratchet (mechanical device)

    ratchet, mechanical device that transmits intermittent rotary motion or permits a shaft to rotate in one direction but not in the opposite one. In the Figure the arm A and the ratchet wheel B are both pivoted at O. The stem of the pawl P can slide in the arm and is kept in its lowest position by

  • ratchet (musical instrument)

    scraper: The cog rattle, or ratchet, is a more complex scraper, consisting of a cog wheel set in a frame to which a flexible tongue is attached; when the wheel revolves on its axle, the tongue scrapes the cogs. Found in Europe and Asia, cog rattles often…

  • Ratcliffe, John (English colonist)

    Jamestown Colony: Origins (1606–07): …Edward-Maria Wingfield, a major investor; John Ratcliffe; George Kendall; John Martin; and Capt. John Smith, a former mercenary who had fought in the Netherlands and Hungary. Wingfield became the colony’s first president. Smith had been accused of plotting a mutiny during the ocean voyage and was not admitted to the…

  • Ratcliffe, John (American politician)

    2026 Iran war: Background: The following day John Ratcliffe, the director of the CIA, said new information indicated severe damage to the nuclear facilities that would take years for Iran to rebuild.

  • Ratcliffe, Peter J. (British physician and scientist)

    Peter J. Ratcliffe is a British physician and scientist known for his research into the regulation of erythropoietin, a hormone that stimulates red blood cell production in response to low blood oxygen levels, and for his research into the mechanisms cells use to sense oxygen. His discoveries

  • Ratcliffe, Sir Peter John (British physician and scientist)

    Peter J. Ratcliffe is a British physician and scientist known for his research into the regulation of erythropoietin, a hormone that stimulates red blood cell production in response to low blood oxygen levels, and for his research into the mechanisms cells use to sense oxygen. His discoveries

  • Ratclyffe, Thomas (governor of Ireland)

    Thomas Radcliffe, 3rd earl of Sussex was an English lord lieutenant of Ireland who suppressed a rebellion of the Roman Catholics in the far north of England in 1569. He was the first governor of Ireland to attempt, to any considerable extent, enforcement of English authority beyond the Pale

  • Ratdolt, Erhard (German printer)

    typography: Maturation of the printed book: …appear until 1476, when one Erhard Ratdolt in Venice used it on an astronomical and astrological calendar. The device was well established by the end of the incunabula period. Continuing the tradition of relative anonymity of authorship of the manuscript books, the earliest pages never, and later ones only seldom,…

  • rate constant (chemistry)

    reaction rate: The rate constant, or the specific rate constant, is the proportionality constant in the equation that expresses the relationship between the rate of a chemical reaction and the concentrations of the reacting substances. The measurement and interpretation of reactions constitute the branch of chemistry known as…

  • Rate Field (ballpark, Chicago, Illinois, United States)

    Jerry Reinsdorf: …Comiskey Park (now known as Guaranteed Rate Field), which opened in 1991, was subsidized by taxpayers and contained a large number of premium-priced seats. Similarly, in 1994 Reinsdorf unveiled the new United Center to replace Chicago Stadium—another iconic Chicago sports arena—for the Bulls. Later that year, when players of Major…

  • rate making (insurance)

    insurance: Rate making: Closely associated with underwriting is the rate-making function. If, for example, the underwriter decides that the most important factor in discriminating between different risk characteristics is age, the rates will be differentiated according to age.

  • rate meter (instrument)

    radiation measurement: Counting systems: …be indicated electronically using a rate meter. This unit provides an output signal that is proportional to the rate at which accepted pulses are occurring averaged over a response time that is normally adjustable by the user. Long response times minimize the fluctuations in the output signal due to the…

  • rate of growth (physiology)

    human development: Types and rates of human growth: …to the next, expressed as rate of growth per year. If growth is thought of as a form of motion, the height attained at successive ages can be considered the distance travelled, and the rate of growth, the velocity. The velocity or rate of growth reflects the child’s state at…

  • rate of interest (economics)

    Interest is the price paid for the use of credit or money. The interest rate is the price paid, expressed as a percentage—typically on an annualized basis—of the underlying credit amount. When you borrow money, perhaps to buy a house or a car or to attend college, you pay interest. When you deposit

  • rate of natural increase (statistics)

    Hungary: Demographic trends: …Hungary has experienced a negative natural increase rate (meaning the number of deaths has outpaced the number of births). These demographic trends were influenced by the urbanization and modernization process. As modernization spread from urban areas (where people generally have fewer children) into the countryside, so did the declining birth…

  • rate of tax

    Arthur Laffer: …propounded the idea that lowering tax rates could result in higher revenues. His theory on taxes influenced U.S. economic policy in the 1980s, which during the presidency of Ronald Reagan (1981–89) became known as Reaganomics.

  • rate separation (chemistry)

    separation and purification: Separations based on rates: Rate separation processes are based on differences in the kinetic properties of the components of a mixture, such as the velocity of migration in a medium or of diffusion through semipermeable barriers.

  • rate structure

    income tax: International variations in rate structures: …be said about variations in rate structures. The important variants in these structures are (1) the starting point and levels of first-bracket rates, (2) the top bracket or maximum marginal rates, and (3) the income range within which rates rise from the lowest to the highest levels.

  • Rated R (album by Rihanna)

    Rihanna: Later works: Rated R, Talk That Talk, and Unapologetic: …that followed later that year, Rated R, much of which she cowrote, was marked by icily stark production and brooding lyrics that touched on revenge. Although her sales declined somewhat, she scored another major hit with “Rude Boy.” Rihanna returned to less-portentous fare on the dance-friendly Loud (2010). In early…

  • ratel (mammal)

    ratel, (Mellivora capensis), badgerlike member of the weasel family (Mustelidae) noted for its fondness for honey. Ratels live in covered and forested regions of Africa and southern Asia. The adult stands 25–30 cm (10–12 inches) at the shoulder and has a heavily built, thick-skinned body about

  • rates (property tax)

    government budget: Local government finance in the United Kingdom: …was a property tax called rates.

  • Ratés, Les (play by Lenormand)

    Henri-René Lenormand: His best-known play, Les Ratés (1920; “The Failures”), traces the physical and moral disintegration of a playwright and his mistress, a mediocre actress, who, under the pressure of adversity, end their lives in murder and suicide. To elucidate the conflicts of the human psyche, Lenormand often chose abnormal…

  • ratfish (fish group)

    ratfish, any of certain sharks of the chimaera (q.v.)

  • Ráth na Riógh (ancient fortress, Ireland)

    Tara: …a vast oval enclosure called Ráth na Riógh (“Fortress of the Kings”). Near the centre of this are two conjoined earthworks: Forradh (“Royal Seat”) and Teach Cormaic (“Cormac’s House”). On the latter is a pillar stone, often thought to be the inauguration stone of the kings of Tara. The other…

  • Rath, Ernst vom (German diplomat)

    Kristallnacht: …7 of the German diplomat Ernst vom Rath by a Polish-Jewish student, Herschel Grynszpan. News of Rath’s death on November 9 reached Adolf Hitler in Munich, Germany, where he was celebrating the anniversary of the abortive 1923 Beer Hall Putsch. There, Minister of Propaganda Joseph Goebbels, after conferring with Hitler,…

  • Rathaus (building, Lübeck, Germany)

    Lübeck: …Henry III), and the magnificent Rathaus (city hall), built in a combination of Gothic and Renaissance styles. Waterways and parklands outline the inner city, where the moat and ramparts once shielded it from attack. Two towered gates are remnants of the medieval fortifications: the Burgtor (1444), which received a new…

  • Rathayatra (Hindu festival)

    Rathayatra, chariot festival in Hinduism observed by taking an image (murti) of a Hindu deity in a procession (Sanskrit: yatra) through the streets around the temple, or from one temple to another, in a wooden chariot (ratha). In some instances, multiple murtis are paraded in the same procession.

  • Rathayātrā Scroll

    Central Asian arts: Sculpture and painting: …scroll paintings such as the Rathayātrā Scroll (1617; Chhatrapati Shivaji Maharaj Vastu Sangrahalaya). Its planar intricacies reveal a new and vital aspect of Nepalese painting, an immediacy of emotion and action of its protagonists, the figures of which are placed on an opaque, velvety ground. The colours of these book…

  • Rathbone, Basil (British actor)

    Basil Rathbone was a British character actor whose portrayal of Sherlock Holmes highlighted a long and varied stage and screen career. Upon graduating from Repton school in England in 1910, Rathbone made his stage debut in Shakespeare’s The Taming of the Shrew in 1911. A number of other

  • Rathbone, Philip St. John Basil (British actor)

    Basil Rathbone was a British character actor whose portrayal of Sherlock Holmes highlighted a long and varied stage and screen career. Upon graduating from Repton school in England in 1910, Rathbone made his stage debut in Shakespeare’s The Taming of the Shrew in 1911. A number of other

  • Rathbun’s syndrome (pathology)

    hypophosphatasia, rare hereditary disorder characterized by very low levels of tissue and serum alkaline phosphatase (the enzyme necessary in cell processes such as muscle metabolism and bone formation). The disease is more common in females. Growth of the infant is retarded; permanent stunting may

  • Rathbun, Mary Jane (American marine zoologist)

    Mary Jane Rathbun was an American marine zoologist known for establishing the basic taxonomic information on Crustacea. In 1881, at the urging of her brother, Richard Rathbun, of the U.S. Fish Commission, she volunteered to work at the Woods Hole Marine Research Center in Massachusetts. Her

  • Rathenau, Emil (German industrialist)

    Emil Rathenau was a German industrialist and a leading figure in the early European electrical industry. In 1883 he founded the Deutsche Edison-Gesellschaft to manufacture products based on Thomas A. Edison’s patents, for which he had purchased the European rights. The firm was renamed

  • Rathenau, Walther (German statesman)

    Walther Rathenau was a German-Jewish statesman, industrialist, and philosopher who organized Germany’s economy on a war footing during World War I and, after the war, as minister of reconstruction and foreign minister, was instrumental in beginning reparations payments under the Treaty of

  • Rather, Dan (American newscaster)

    Dan Rather is an American newscaster and author who covered some of the most important historical events of his time, including the civil rights movement, the Vietnam War, and the Watergate scandal, during his four decades with CBS. Rather grew up in Texas, where his father laid pipeline for oil

  • Rather, Dan Irvin (American newscaster)

    Dan Rather is an American newscaster and author who covered some of the most important historical events of his time, including the civil rights movement, the Vietnam War, and the Watergate scandal, during his four decades with CBS. Rather grew up in Texas, where his father laid pipeline for oil

  • Rathke’s pouch (embryology)

    Martin H. Rathke: …embryonic structure, now known as Rathke’s pouch, from which the anterior lobe of the pituitary gland develops.

  • Rathke, Martin H (German anatomist)

    Martin H. Rathke was a German anatomist who first described the gill slits and gill arches in the embryos of mammals and birds. He also first described in 1839 the embryonic structure, now known as Rathke’s pouch, from which the anterior lobe of the pituitary gland develops. Rathke ended a 10-year

  • Rathke, Martin Heinrich (German anatomist)

    Martin H. Rathke was a German anatomist who first described the gill slits and gill arches in the embryos of mammals and birds. He also first described in 1839 the embryonic structure, now known as Rathke’s pouch, from which the anterior lobe of the pituitary gland develops. Rathke ended a 10-year

  • Rathlin Island (island, Northern Ireland, United Kingdom)

    Moyle: …coast of Ireland, Moyle included Rathlin Island, Northern Ireland’s only populated island, and had 42 miles (68 km) of bays, headlands, and sheer basalt cliffs dissected by wooded glens. The Antrim Mountains extend through the eastern portion of Moyle, reaching an elevation of 1,817 feet (554 metres) at Trostan Mountain…

  • Rathore, Rajyavardhan Singh (Indian rifle shooter and politician)

    Rajyavardhan Singh Rathore is an Indian politician and former rifle shooter who won his country’s first individual Olympic silver medal when he placed second in the men’s double-trap event at the Athens 2004 Olympic Games. Rathore attended the Indian National Defence Academy and joined the Indian

  • Rathouisiidae (gastropod family)

    gastropod: Classification: …or terrestrial and carnivorous (Rathouisiidae); about 200 species. Superorder Basommatophora Mantle cavity present; eyes at base of 1 pair of tentacles; male and female gonopore separate, usually on right side of body; shell conical to patelliform; mostly freshwater but a few land and marine taxa; about 1,000 species. (No…

  • Ratibida (plant genus)

    coneflower: Plants of the genus Ratibida have yellow ray flowers, brownish disk flowers, and segmented leaves. Prairie coneflower (Ratibida columnaris) and R. pinnata are grown in wildflower gardens. The third genus, Rudbeckia, has about 25 annual, biennial, and perennial species with simple or segmented leaves, yellow ray flowers, and brown…

  • Ratibor (Poland)

    Racibórz, city, southwestern Śląskie województwo (province), south-central Poland, on the upper Oder River. According to tradition, Racibórz was founded by a Slavic tribal ruler, Prince Racibor, in the 9th century and was united with Poland in the 10th. It was granted municipal rights in the 13th

  • Ratich, Wolfgang (German educator)

    Wolfgang Ratke was a German educational reformer, especially in the teaching of languages, whose pioneering achievements laid the groundwork for the work of Comenius. Ratke was educated in Hamburg, and he studied theology (without obtaining a degree) at the University of Rostock. Having abandoned a

  • Ratich, Wolfgang (German educator)

    Wolfgang Ratke was a German educational reformer, especially in the teaching of languages, whose pioneering achievements laid the groundwork for the work of Comenius. Ratke was educated in Hamburg, and he studied theology (without obtaining a degree) at the University of Rostock. Having abandoned a

  • Ratichius, Wolfgang (German educator)

    Wolfgang Ratke was a German educational reformer, especially in the teaching of languages, whose pioneering achievements laid the groundwork for the work of Comenius. Ratke was educated in Hamburg, and he studied theology (without obtaining a degree) at the University of Rostock. Having abandoned a

  • ratification (politics)

    diplomacy: Diplomatic agreements: Treaties and conventions require ratification, an executive act of final approval. In democratic countries parliamentary approval is deemed advisable for important treaties. In the United States the Senate must consent by a two-thirds vote. Elsewhere, legislative involvement is less drastic but has increased since World War II. In Britain…

  • rating (measurement of broadcast viewership)

    radio: Ratings systems: ) As radio grew into a commercial force, it became necessary to determine the popularity of particular shows, as this would affect the price of the program’s advertising time. In 1930 the Association of National Advertisers, along with the Cooperative Analysis of Broadcasting, devised…

  • rating (motion-picture industry)

    Motion Picture Association: …the MPAA set up a rating board that classified films as G, M, R, and X. After various changes the MPA ratings are now as follows: G, for general audiences; PG, parental guidance suggested; PG-13, parents strongly cautioned, because film contains material inappropriate for children under 13; R, restricted to…

  • rating bureau (insurance)

    insurance: Rate making: …claims experience by setting up rating bureaus to calculate rates based on industrywide experience. They may have an agreement that all member companies must use the rates thus developed. The rationale for such agreements is that they help insurers meet the criteria of adequacy and fairness. Rating bureaus are used…

  • rating rule (yachting)

    rating rule, in yacht racing, rule used to classify sailing yachts of different designs to enable them to compete on relatively equal terms. The competition may be either among yachts in a particular rating class or on a handicap basis, with the highest-rated boat giving up time allowances to all

  • rating scale (psychology)

    personality assessment: Rating scales: The rating scale is one of the oldest and most versatile of assessment techniques. Rating scales present users with an item and ask them to select from a number of choices. The rating scale is similar in some respects to a multiple choice…

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    Andreas Gursky: Ratingen Swimming Pool (1987) shows a lush green landscape dotted with tiny figures swimming and relaxing by the pool. The scene was photographed from a considerable distance at a slightly elevated perspective. Though shot far from the pool, the image captures every element of the…