district of Kalat division, Balochistan province, Pakistan. A former princely state, it has an area of 7,048 sq mi (18,254 sq km) and is bounded north by Khuzdar district, east by the Kirthar Range (separating it from Sind), south by ...
early Spanish historian and Dominican missionary in the Americas, who was the first to expose the oppression of the Indian by the European and to call for the abolition of Indian slavery. His several works include Historia ... [10 Related Articles]
(from the article "Central America") ...and Gonzalez, who had returned to Central America to press Pedrarias's claim to Nicaragua. The discovery of gold in Honduras made the struggle more intense. Cortes first sent Francisco de Las Casas to relieve the rebellious Olid but then marched ...
French historian best known as the recorder of Napoleon's last conversations on St. Helena, the publication of which contributed greatly to the Napoleonic legend in Europe. [1 Related Articles]
(from the article "pre-Columbian civilizations") ...broad, fertile Valley of Guatemala around present-day Guatemala City. The earliest occupation is known as the Arevalo phase, a village culture of the Early to Middle Formative. It was followed by Las Charcas, a Middle Formative culture known largely from ...
city, seat (1852) of Dona Ana county, southern New Mexico, U.S. It lies along the Rio Grande 38 miles (61 km) northwest of El Paso, Texas. It was founded in 1848 at the end of the Mexican-American War. There are ...
region in Caceres provincia (province), in the Extremadura comunidad autonoma (autonomous community), western Spain. The high plateau of Salamanca in the central Cordillera Ridge rises almost imperceptibly to the western ranges of the Sierra ...
coastal marshes along the Guadalquivir estuary in the comunidad autonoma (autonomous community) of Andalusia, southern Spain. The region extends for more than 1,100 square miles (3,000 square km), occupying part of the provinces of Sevilla, Huelva, and ...
provincia (province) in the comunidad autonoma (autonomous community) of the eastern Canary Islands, Spain. Las Palmas province consists of Gran Canaria, Fuerteventura, Lanzarote, and a few smaller islands. The city of Las Palmas, on ... [1 Related Articles]
city and port, capital of Las Palmas provincia (province) in the Canary Islands comunidad autonoma (autonomous community) of Spain. Located on the northeastern coast of Gran Canaria Island, it is the largest city of ... [1 Related Articles]
city, southern Uruguay. It is situated in a wine-growing district just north of Montevideo. It was the site of a decisive battle (1811) in Uruguay's struggle for independence, in which the revolutionaries defeated Spanish forces. Las Piedras is among the ...
religious festival celebrated in Mexico between December 16 and 24. Las Posadas commemorates the journey that Joseph and Mary made from Nazareth to Bethlehem in search of a safe refuge where Mary could give birth to the baby Jesus. When ...
town, southwestern Panama, on the coastal lowland of the Azuero Peninsula a few miles west of its port, Mensabe, on the Gulf of Panama. Founded as a gold-mining centre, in addition to its administrative functions, Las Tablas is a marketing ...
city, seat (1909) of Clark county, southeastern Nevada, U.S. The only major city in the American West to have been founded in the 20th century, Las Vegas grew from a tiny, desert-bound railroad service centre at the outset of the ... [9 Related Articles]
city, seat (1862) of San Miguel county, north-central New Mexico, U.S. It lies along the Gallinas River, at an elevation of 6,435 feet (1,961 metres), in the Sangre de Cristo Mountains. The original settlement (1835) developed as the Mexican port ...
(from the article "chess") The third, and most popular, principle for time controls was a flexible system proposed by Tassilo von Heydebrand und der Lasa, a 19th-century German player and author. Lasa proposed that each player be allowed a bank of time in which ...
(from the article "pasta") ...(12.7-millimetre) diameter, such variations as the small elbow-shaped pieces called dita lisci, and the large, fluted, elbow-shaped pieces called rigatoni. Ribbon types include the wide lasagna and the narrow linguini. Farfels are ground, granulated, or shredded. The wide variety of ...
laccolithic segment of the Colorado Plateau, extending across San Juan and Grand counties in eastern Utah, U.S. Of volcanic origin, the peaks rise to Mount Peale (12,721 feet [3,877 metres]), the highest point in the Colorado Plateau. The region is ...
(from the article "Anatolia") ...in 1204 and the establishment of the Latin empire, northwestern Anatolia became the centre of the most important of the Byzantine successor states, the empire of Nicaea under the dynasty of the Lascarids. Centred in the Aegean region and Bithynia, ...
Greek scholar and diplomat whose career shows the close connections that linked political interests and humanist effort before the Protestant Reformation.
cave containing one of the most outstanding displays of prehistoric art yet discovered. Located above the Vezere River valley near Montignac, in Dordogne, France, the cave is a short distance upstream from the Eyzies-de-Tayac series of caves. Lascaux, together with ... [4 Related Articles]
U.S. social critic and academic (b. June 1, 1932, Omaha, Neb.--d. Feb. 14, 1994, Pittsford, N.Y.), penned stinging indictments of contemporary American culture as the author of several books, most notably the 1979 best-seller The Culture of Narcissism, in which ...
British architect (b. Sept. 8, 1914, London, Eng.-d. Jan. 11, 2001, London), was one of Great Britain's most prominent New Brutalist architects, noted for his controversial use of vast concrete-slab exteriors. Lasdun's designs included the award-winning Royal College of Physicians ...
a device that stimulates atoms or molecules to emit light at particular wavelengths and amplifies that light, typically producing a very narrow beam of radiation. The emission generally covers an extremely limited range of visible, infrared, or ultraviolet wavelengths. Many ... [61 Related Articles]
(from the article "advanced ceramics") ...thin films (that is, films less than one micrometre thick) can be produced by such advanced techniques as physical vapour deposition (PVD) and chemical vapour deposition (CVD). PVD methods include laser ablation, in which a high-energy laser blasts material from ...
(from the article "spectroscopy") ...width. Tunable laser sources with extremely narrow bandwidths and high intensity routinely achieve a resolution on the order of the Doppler line width (0.001-0.05 nanometre). The design of a laser absorption spectrometer (Figure 10) is advantageous in that no monochromator ...
(from the article "electronics") Laser diodes, also made of III-V compounds, are used in digital audio and video disc players to read the minuscule tracks molded into the disc and containing the digitally recorded information. Lasers are employed because laser light can be focused ...
(from the article "fusion reactor") ...be compressed to tremendous density and temperature so that fusion power is produced in the few nanoseconds before the pellet blows apart. The compression is accomplished by focusing an intense laser beam or a charged particle beam, referred to as ...
(from the article "geoid") A pioneer satellite designed for geodetic purposes was Lageos (Laser Geodynamic Satellite), launched by the United States on May 4, 1976, into a nearly circular orbit at a height of approximately 6,000 kilometres. It consisted of an aluminum sphere 60 ...
(from the article "amorphous solid") ...is propelled against the moving surface of a cold, rotating copper cylinder. A solid film of metallic glass is spun off as a continuous ribbon at a speed that can exceed a kilometre per minute. In laser glazing, a brief ...
(from the article "machine tool") LM is a method of cutting metal or refractory materials by melting and vaporizing the material with an intense beam of light from a laser. Drilling by laser, although costly in energy since material must be melted and vaporized to ...
(from the article "spectroscopy") Because of the nature of laser-signal generation, most lasers are not tunable over an appreciable frequency range and even those that can be tuned, such as dye lasers, must be driven by a pump laser and for a given dye ...
(from the article "information processing") Most nonimpact printers form images from a matrix of dots, but they employ different techniques for transferring images to paper. The most popular type, the laser printer, uses a beam of laser light and a system of optical components to ...
(from the article "laser") Pulsed laser radar can measure distance in the same manner as microwave radar by timing how long it takes a laser pulse to bounce back from a distant object. For instance, in 1969 laser radar precisely measured the distance from ...
(from the article "range finder") Advances in laser technology led to the development in 1965 of another kind of ranging instrument known as the laser range finder. It has largely replaced coincidence range finders for surveying and radar in certain military applications. The laser range ...
(from the article "bar code") Bar code information is read by an optical (laser) scanner that is part of a computer system. A handheld scanner or bar code pen is moved across the code, or the code itself is moved by hand across a scanner ...
(from the article "microscope") In a laser scanning confocal microscope (LSCM), the focal point of a laser is scanned across a specimen to build up a two-dimensional optical section. Three-dimensional images can be reconstructed by taking a series of two-dimensional images at different focal ...
(from the article "spectroscopy") As mentioned above, the invention and subsequent development of the laser opened many new areas of spectroscopy. Although the basic processes investigated remain those of rotational, vibrational, and electronic spectroscopies, this tool has provided many new ways to investigate such ...
(from the article "therapeutics") A laser is a device that produces an extremely intense monochromatic, nondivergent beam of light capable of generating intense heat when focused at close range. Its applications in the medical field include the surgical welding of a detached retina and ...
(from the article "smart bomb") ...real-time pictures of the target area to the aircrew, who then lock the weapon onto the target or actively guide it all the way to impact. In bombs with the laser-guidance system, commonly called laser-guided bombs, the target is illuminated ...
(from the article "Adobe Systems Incorporated") ...1983 Apple Computer, Inc. (now Apple Inc.), acquired 15 percent of Adobe and became the first licensee of PostScript. In 1985 Apple introduced the first Macintosh-compatible PostScript printer, the LaserWriter, based on a laser-print engine developed by Canon Inc. The ...
(from the article "1944: Other Winners") ...Frank Butler and Frank Cavett for Going My WayOriginal Story: Leo McCarey for Going My WayOriginal Screenplay: Lamar Trotti for WilsonCinematography, Black-and-White: Joseph LaShelle for LauraCinematography, Color: Leon Shamroy for WilsonArt Direction, Black-and-White: William Ferrari and Cedric Gibbons for GaslightArt ...
(from the article "Arabic literature") ...and brought the genre to a level of real maturity: if Muhammad's brother Mahmud Taymur was certainly the most prolific, both Yahya Haqqi and Mahmud Tahir Lashin were the most accomplished craftsmen.
(from the article "Burma Road") highway linking Lashio, in eastern Myanmar (Burma), with K'un-ming, in Yunnan province, China, a distance of 717 miles (1,154 km). The Chinese began construction of the road after the outbreak of the Sino-Japanese War in 1937 and the occupation of ...
(from the article "Gwalior") Four miles (6 km) south of the fortress lies the city of Lashkar; founded in 1810 as a military camp, it later served as capital of the princely state of Gwalior. The city of Lashkar contains many palaces and the ...
laser-based eye surgery commonly used to correct nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. LASIK eye surgery was developed in the early 1990s, when ophthalmologists combined the technique of keratomileusis, in which the cornea is removed, frozen, reshaped, and replaced, with ... [2 Related Articles]
(from the article "lepidopteran") ...at Gaza, Egypt, in profile.Approximately 1,600 species worldwide.1,500 species worldwide; larvae usually hairy and brightly coloured, some living gregariously in...lappettent caterpillar moth
(from the article "lepidopteran") ...most have a single long posterior horn; typically rest with head and thorax reared, fancifully like the Sphinx at Gaza, Egypt, in profile.Approximately 1,600 species worldwide.
(from the article "grassland") ...rodents are important to the maintenance and composition of the vegetation; species include the large marmots and a diversity of voles and other smaller types. A vole in Mongolia, Lasiopodomys brandtii, in some years can consume such ...
