town and metropolitan borough in the northeastern part of the metropolitan county of Greater Manchester, historic county of Lancashire, England, cradled on two sides by the Pennines.
in astronomy, the minimum distance to which a large satellite can approach its primary body without being torn apart by tidal forces. If satellite and primary are of similar composition, the theoretical limit is about 2 12 times the radius ...
glaciated bedrock surface, usually in the form of rounded knobs. The upstream side of a roche moutonnee has been subjected to glacial scouring that has produced a gentle, polished, and striated slope; the downstream side has been subjected to glacial ...
naturalized American architect of governmental, educational, and corporate structures, especially noted for the work he did in partnership with Eero Saarinen.
town and commercial harbour, Charente-Maritime departement, Poitou-Charentes region, western France, situated on the right bank of the Charente River, 10 miles (16 km) from the sea. It has straight, regular streets and promenades running along the sites of its old ...
gifted polemical journalist under the Second Empire and the Third Republic who distinguished himself, at first, as a supporter of the extreme left and later as a champion of the extreme right.
a crystalline solid having a large piezoelectric effect (electric charge induced on its surfaces by mechanical deformation due to pressure, twisting, or bending), making it useful in sensitive acoustical and vibrational devices. Like other piezoelectric materials, Rochelle salt crystals (KNaC4H4O6·4H2O) ...
city, seat of Olmsted county, southeastern Minnesota, U.S. It lies on the Zumbro River and on several creeks in a mixed-farming region about 75 miles (120 km) southeast of Minneapolis. The site, which originally served as a camping ground for ...
city, Strafford county, southeastern New Hampshire, U.S., on the Cocheco and Salmon Falls rivers, just northwest of Dover. Named for Lawrence Hyde, 1st earl of Rochester, it was incorporated as a town (township) in 1722, but no settlement was made ...
town, Medway unitary authority, historic county of Kent, England, on the River Medway, east of London. In ancient times it was the site of a walled Roman-British town (Durobrivae), situated where the Roman road from the English Channel ports to ...
industrial city, seat (1821) of Monroe county, northwestern New York, U.S. It is a St. Lawrence Seaway port on the Genesee River at its outlet into Lake Ontario, 71 miles (114 km) east-northeast of Buffalo. It is the centre of ...
private, coeducational institution of higher learning in Rochester, New York, U.S. It includes colleges of business, applied science and technology, liberal arts, science, and engineering. The institute also includes the College of Imaging Arts and Sciences and the National Technical ...
private, coeducational institution of higher learning in Rochester, New York, U.S. The university includes the College of Arts and Science, the School of Engineering and Applied Sciences, Eastman School of Music, William E. Simon Graduate School of Business Administration, and ...
district, administrative and historic county of Essex, England, bordered on the north by the Crouch estuary and on the south by the Southend-on-Sea urban area on the Thames estuary. The River Roach (formerly Roch) flows through the centre of the ...
in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is comprised and typically form recognizable and mappable volumes. Rocks are commonly divided into three major classes ...
style of popular music that originated in the United States in the mid-1950s and that evolved by the mid-1960s into the more encompassing international style known as rock music, though the latter also continued to be known as rock and ...
in tunnelling and underground mining, steel rod inserted in a hole drilled in the face of a rock formation to support the roof or sides of the cavity. The bolt may be provided with an expanding device to grip the ...
any of the 100 species of the genus Arabis, herbs belonging to the mustard family (Brassicaceae), found throughout the Northern Hemisphere and in mountainous areas of Africa. Some are cultivated as ornamentals for their white, pink, or purple four-petalled flowers. ...
transparent variety of the silica mineral quartz (q.v.) that is valued for its clarity and total lack of colour or flaws. Vessels and spheres have been carved from large crystals since ancient times, and the application of the word crystal ...
narrative histories and announcements carved into cliff rock, onto pillars, and in caves throughout India by King Asoka (reigned c. 265-238 BC), the most powerful emperor of the Maurya dynasty and a highly influential promulgator of Indian Buddhism. Asoka's first ...
fan-shaped bedrock surface at the foot of a mountain, often where a stream flows out onto a piedmont slope. It is often covered with a thin veneer of alluvium and may be confused with an alluvial fan. Rock fans are ...
tonguelike body of coarse rock fragments, found in high mountains above the timberline, that moves slowly down a valley. The rock material usually has fallen from the valley walls and may contain large boulders: it resembles the material left at ...
city, York county, northern South Carolina, U.S., near the Catawba River, 26 miles (42 km) south of Charlotte, North Carolina. Established in 1851 as a depot on the Charlotte and South Carolina Railroad, it was named for a flint hill ...
city, seat (1833) of Rock Island county, northwestern Illinois, U.S. It lies on the Mississippi River (bridged to Iowa) at the mouth of the Rock River and opposite the island for which it was named. With Moline and East Moline, ...
nonnavigable stream in the north central United States, rising in Washington County, eastern Wisconsin, and flowing in a generally southwesterly direction to join the Mississippi at Rock Island, Ill. The 300-mi (480-km) river, which from source to mouth drops about ...
(Cistus), any of a genus of 17 species of low to medium-sized shrubs, in the rock rose family (Cistaceae), native to the Mediterranean region and long known to horticulture. There are a number of garden hybrids useful in warm areas, ...
city, Sweetwater county, southwestern Wyoming, U.S. The city is located on Bitter Creek, at an elevation of 6,270 feet (1,911 metres) among sagebrush plains and hills, 13 miles (21 km) east of Green River city. Named for a nearby saline ...
lichen of the genus Umbilicaria, sometimes used as emergency food by soldiers or explorers. It contains about one-third more calories than equal amounts of honey, corn flakes, or hominy; however, this lichen cannot seriously be considered as a food crop ...
early form of rock music originated by white performers in the American South, popular from the mid-1950s to 1960, with a revival in the late 1970s. Record reviewers coined the term rockabilly-literally, rock and roll played by ...
isolated granite rock in the North Atlantic Ocean 220 miles (354 km) west of the Outer Hebrides, Scotland. Rockall is about 100 yards (91 metres) in circumference and stands some 70 feet (21 metres) above sea level. It was formally ...
a light, low, four-wheeled, horse-drawn carriage popular in the United States after its introduction at Rockaway, N.J., in 1830. It had a driver's seat built into the body, with the top projecting forward to protect the driver from inclement weather. ...
a 12-acre (5-hectare) complex of 14 limestone buildings in midtown Manhattan in New York City, designed by a team of architects headed by Henry Hofmeister, H.W. Corbett, and Raymond Hood. The group of skyscrapers was built between 1929 and 1940.
private coeducational institution in New York, New York, U.S., devoted to research and graduate education in the biomedical sciences. It was founded by industrialist John D. Rockefeller in 1901 as a medical-research centre, and in 1954 the school became part ...
American industrialist and philanthropist, founder of the Standard Oil Company, which dominated the oil industry and was the first great U.S. business trust.
American philanthropist, the only son of John D. Rockefeller, Sr., and heir to the Rockefeller fortune, who built Rockefeller Center in New York City and was instrumental in the decision to locate the United Nations in that city.
41st vice president of the United States (1974-77) in the Republican administration of President Gerald Ford, four-term governor of New York (1959-73), and leader of the liberal wing of the Republican Party. He unsuccessfully sought the presidential nomination of his ...
U.S. industrialist and financier known, in conjunction with his older brother, John D. Rockefeller, for his role in the establishment and growth of the Standard Oil Company.
any of a type of jet-propulsion device that carries either solid or liquid propellants that provide both the fuel and oxidizer required for combustion. The term is also commonly applied to any of various vehicles, including firework skyrockets, guided missiles, ...
any of the 90 species of the genus Sisymbrium, of the mustard family (Brassicaceae), weedy plants with yellow flowers that are common in waste areas and fields of the Northern Hemisphere and mountains in the Southern Hemisphere. Rockets have long, ...
pioneer railway locomotive built by the English engineers George and Robert Stephenson. Following the success of the Stockton & Darlington Railway in 1825, the cities of Liverpool and Manchester decided to build a 40-mile (64-km) steam-operated line connecting them. George ...
any of a type of jet-propulsion device carrying either solid or liquid propellants that provide both the fuel and oxidizer required for combustion. The term is also commonly applied to any of various vehicles, including firework skyrockets, guided missiles, and ...
