| | - Polar Satellite Launch Vehicle
- (from the article "launch vehicle") ...U.S. Scout launch vehicle first used in the 1960s. India did not have a prior ...
- Polar Urals
- (from the article "Ural Mountains") The Urals divide into five sections. The northernmost Polar Urals extend some 240 miles from ...
- polar wandering
- the migration over the surface of the Earth of the magnetic poles of the Earth ... [3 Related Articles]
- polar-front jet stream
- (from the article "jet stream") ...the winter their positions are nearer the equator and their speeds higher than during the ...
- polarimetry
- in analytic chemistry, measurement of the angle of rotation of the plane of polarized light ...
- Polaris
- Earth's present northern polestar, or North Star, at the end of the "handle" of the ... [6 Related Articles]
- Polaris A-1
- (from the article "Polaris missile") After four years of research and development, the U.S. Navy in 1960 began to deploy ...
- Polaris A-2
- (from the article "Polaris missile") ...long and 4.5 feet (1.4 m) in diameter and was powered by two solid-fueled stages. ...
- Polaris A-3
- (from the article "Polaris missile") ...Three models were developed: the A-1, with a range of 1,400 miles (2,200 km) and ...
- Polaris A-3TK
- (from the article "Polaris missile") Between 1971 and 1978 the Polaris was replaced by the Poseidon missile in the U.S. ...
- Polaris missile
- first U.S. submarine-launched ballistic missile (SLBM) and the mainstay of the British nuclear deterrent force ... [3 Related Articles]
- polarity
- (from the article "regeneration") Each living thing exhibits polarity, one example of which is the differentiation of an organism ...
- polarity
- (from the article "chemical bonding") There are three main properties of chemical bonds that must be considered-namely, their strength, length, ...
- polarity
- (from the article "geomagnetic field") ...a magnet aligned with the planet's rotation axis. The figure shows such a field for ...
- polarity reversal
- (from the article "Earth") An important characteristic of Earth's magnetic field is polarity reversal. In this process the direction ...
- polarization
- property of certain electromagnetic radiations in which the direction and magnitude of the vibrating electric ... [14 Related Articles]
- polarization
- (from the article "collective behaviour") ...became infrequent or ceased. A fad calls attention to recreational needs; the circumstances surrounding a ...
- polarization analyzer
- (from the article "microscope") ...polarized light passes through the object under examination, it may be unaffected or, if the ...
- polarization retarder
- (from the article "microscope") ...can be rotated to obtain maximum contrast in the image, and so the direction of ...
- polarization, plane of
- (from the article "radiation") ...vector, a quantity representing the magnitude and direction of the electric field) as the wave ...
- polarizer
- (from the article "Polaroid Corporation") The company originated in 1932 as the Land-Wheelwright Laboratories, which Land founded with George Wheelwright ...
- polarizing filter
- (from the article "optics") Polarizing filters have the property of transmitting light that vibrates in one direction while absorbing ...
- polarizing microscope
- (from the article "microscope") Polarizing microscopes are conventional microscopes with additional features that permit observation under polarized light. The ...
- polarography
- in analytic chemistry, an electrochemical method of analyzing solutions of reducible or oxidizable substances. It ... [2 Related Articles]
- polaroid
- (from the article "light") Natural light is polarized in passage through a number of materials, the most common being ...
- Polaroid Corporation
- American manufacturer of cameras, film, and optical equipment founded by Edwin Herbert Land (1909-91), who ... [1 Related Articles]
- Polaroid Land camera
- (from the article "Land, Edwin Herbert") Land began work on an instantaneous developing film after the war. In 1947 he demonstrated ...
- Polaroid SX-70
- (from the article "Polaroid Corporation") ...the 1950s the cameras were refined to produce black-and-white prints in 15 seconds; in the ...
- polaron
- electron moving through the constituent atoms of a solid material, causing the neighbouring positive charges ...
- polaron state
- (from the article "radiation") In a polaron state an electron belongs to the association of molecules, but its motion ...
- polder
- tract of lowland reclaimed from a body of water, often the sea, by the construction ... [2 Related Articles]
- Poldervaart, Arie
- U.S. geologist and petrologist, noted for his work concerning crustal evolution and the petrology of ...
- Poldi Pezzoli, Museo
- (Italian: Poldi Pezzoli Museum), in Milan, museum in the former private house of G.G. Poldi-Pezzoli, ...
- Polding, John Bede
- first Roman Catholic bishop in Australia (from 1835), where eight years later he became the ...
- pole
- (from the article "electric motor") Large DC motors usually have four or more poles to reduce the thickness of the ...
- Pole of Inaccessibility
- point on the Antarctic continent that is farthest, in all directions, from the surrounding seas, ...
- pole vault
- sport in athletics (track and field) in which an athlete jumps over an obstacle with ... [7 Related Articles]
- Pole, Reginald
- English prelate who broke with King Henry VIII over Henry's antipapal policies and later became ... [2 Related Articles]
- Pole, Richard de la
- last Yorkist claimant to the English throne.
- pole-and-line fishing
- (from the article "commercial fishing") Line fishing at sea is very popular, not only in traditional fisheries with small boats ...
- polecat
- any of several weasellike carnivores of the family Mustelidae (which includes the weasel, mink, otter, ...
- polemarchos
- (from the article "archon") Next came the polemarch, commander in war and judge in litigation involving foreigners. Third, the ...
- Polemarchus
- (from the article "Lysias") ...and Polemarchus. After studying rhetoric in Italy, Lysias returned to Athens in 412. It was ...
- Polematas
- (from the article "Daphnephoria") ...Apollo Ismenius. The Daphnephoros also dedicated a bronze tripod in the temple of Apollo. According ...
- polemic
- (from the article "nonfictional prose") Journalism often takes on a polemical cast in countries in which libel laws are not ...
- Polemo
- (from the article "ancient Rome") ...frontier with Mesopotamia. Farther north, however, no such natural line existed. North of the Black ...
- Polemoniaceae
- the phlox, or Jacob's ladder, family of plants; there are about 18 genera and some ... [1 Related Articles]
- Polemonium caeruleum
- (from the article "Jacob's ladder") Polemonium caeruleum is native to European woodlands and mountains and widely grown as a garden ...
- polenta
- a porridge or mush usually made of ground corn (maize) cooked in salted water. Cheese ...
- Polenta Family
- Italian noble family, named for its castle of Polenta (located in the Romagna, southwest of ...
- Polenta, Guido da
- (from the article "Polenta Family") ...of Polenta (located in the Romagna, southwest of Cesena), which dominated the city-state of Ravenna ...
- Polenta, Guido Novello da
- (from the article "Dante") ...completed just before his death in 1321, but the exact dates are uncertain. In addition, ...
- Poleski National Park
- (from the article "Lubelskie") ...though the province possesses lovely scenery and outstanding cultural sites. The Roztocze National Park consists ...
- polestar
- the brightest star that appears nearest to either celestial pole at any particular time. Owing ... [5 Related Articles]
- polevoy
- (from the article "poludnitsa") The poludnitsa is related to the polevoy, the male field spirit, who is seldom seen ...
- Polevskoy
- city, Sverdlovsk oblast (province), western Russia, located near the Chusovaya River in the mid-Urals. Founded ...
- Poley, Battle of
- (from the article "Spain") ...in Bobastro and in the Malaga mountains, was the leader of muwallad ...
- Polgar, Judit
- the youngest of three chess-playing sisters (see Zsuzsa Polgar). She became an international master at ... [2 Related Articles]
- Polgar, Sofia
- (from the article "chess") Soviet domination of women's chess ended with the defeat of Chiburdanidze by Xie Jun, of ...
- Polgar, Zsuzsa
- Hungarian international grandmaster who won the women's world chess championship in 1996 from Xie Jun ... [2 Related Articles]
- Poliakoff, Serge
- painter and lithographer, one of the most widely recognized of the abstract colourists who flourished ...
- Polian vesicle
- (from the article "echinoderm") ...and give rise to branches that end in the tube feet, which are in contact ...
- police
- body of officers representing the civil authority of government. Police typically are responsible for maintaining ... [25 Related Articles]
- police dog
- (from the article "police") Dogs were first trained for police work at the turn of the 20th century in ...
- Police Gazette, The
- daily publication of the London Metropolitan Police that carries details of stolen property and of ...
- police jury
- (from the article "Louisiana") ...parish near the city of New Orleans to more than 1,300 square miles (3,370 square ...
- police power
- in U.S. constitutional law, the permissible scope of federal or state legislation so far as ...
- Police Prefecture
- (from the article "Paris") Across the boulevard du Palais is the Police Prefecture, another 19th-century structure. On the far ...
- police technology
- (from the article "police") Police technology refers to the wide range of scientific and technological methods, techniques, and equipment ...
- Police Zone
- southern two-thirds of South West Africa (now Namibia) in which the German and later South ... [2 Related Articles]
- Police, the
- British-American new-wave band that blended reggae, jazz, funk, punk, and world music influences into hook-laden ... [1 Related Articles]
- Policia Nacional Civil
- (from the article "El Salvador") ...agreement officially ended the civil war and mandated a major reduction of the country's armed ...
- policy
- (from the article "bioethics") The importance of the social and legal issues addressed in bioethics is reflected in the ...
- policy
- form of lottery in which pellets usually numbered 1 to 78 are deposited in a ...
- Policy Forum
- (from the article "Labour Party") Another product of structural reform is the National Policy Forum, a body that effectively decreases ...
- policy ineffectiveness proposition
- (from the article "Lucas, Robert E., Jr.") ...argued, however, that workers cannot be fooled again and again; higher inflation will ultimately fail ...
- Polidouri, Maria
- Greek poet known for her impassioned, eloquent farewell to life.
- poligar
- (from the article "India") ...Their dependence on migrants and mercenaries for both military and fiscal expertise was considerable, and ...
- Polignac family
- French noble house important in European history.
- Polignac, Auguste-Jules-Armand-Marie, prince de
- (from the article "Charles X") ...1829, when liberals joined with the extreme right to defeat it. Losing patience and ignoring ...
- Polignac, Melchior de
- (from the article "Saint-Pierre, Charles-Irenee Castel, abbe de") ...as almoner to the Duchess d'Orleans, who presented him with the abbacy of Tiron, a ...
- poling
- (from the article "capacitor dielectric and piezoelectric ceramics") ...These materials are processed in a similar manner to capacitor dielectrics except that they are ...
- polio
- acute viral infectious disease of the nervous system that usually begins with general symptoms such ... [29 Related Articles]
- polio vaccine
- preparation of poliomyelitis virus given to prevent infection with the disease. The virus is grown ... [6 Related Articles]
- Poliochni
- (from the article "Anatolia") ...was defended by a ditch, a plastered rampart, and an enclosure wall. Villages such as ...
- Polioptilidae
- (from the article "passeriform") ...found in Eurasia and North Africa; inhabit brushlands, forests, forest edges, rocky slopes, deserts, grassy ...
- poliovirus
- (from the article "virus") ...John Enders, Thomas Weller, and Frederick Robbins, who in 1949 developed the technique of culturing ...
- Poliquin, Daniel
- (from the article "Literature") ...faire une maison avec ses morts, and popular favourite Marie Laberge moving from her usual ...
- polis
- ancient Greek city-state. The small state in Greece originated probably from the natural divisions of ... [12 Related Articles]
- Polisario Front
- politico-military organization striving to end Moroccan control of the former Spanish territory of Western Sahara, ... [12 Related Articles]
- Polish Academy of Sciences
- (from the article "Warsaw") Education in Warsaw benefits from the presence of the headquarters of the Polish Academy of ...
- Polish Corridor
- strip of land, 20 to 70 miles (32 to 112 km) wide, that gave the ... [2 Related Articles]
- Polish Democratic Society
- (from the article "Poland") ...two figures: the moderate conservatives followed Prince Czartoryski, and the leftists were led at first ...
- Polish Falcons
- (from the article "physical culture") Other burgeoning movements included the Sokol ("Falcon"), founded in 1862 to foster a Czech national ...
- Polish Families, League of
- (from the article "Poland") ...Poland continued a difficult transition under a particularly difficult government. The Law and Justice party ...
- Polish Home Army
- (from the article "international relations") ...Red Army to the borders of nine states that had been independent before 1939, making ...
- Polish Laboratory Theatre
- (from the article "directing") ...from very different traditions, so that when Suzuki Tadashi's Waseda company from Tokyo arrived in ...
- Polish language
- West Slavic language belonging to the Lekhitic subgroup and closely related to Czech, Slovak, and ... [3 Related Articles]
- Polish literature
- body of writings in Polish, one of the Slavic languages. The Polish national literature holds ... [10 Related Articles]
- Polish National Catholic Church
- (from the article "Poland") The Polish National Catholic Church, a schismatic offshoot of Roman Catholicism, never won popular support, ...
- Polish National Catholic Church of America
- Old Catholic church that arose in the late 19th and early 20th centuries among Polish ... [1 Related Articles]
- Polish National Committee
- (from the article "Poland") ...The Inter-Allied conference (June 1918) endorsed Polish independence, thus crowning the efforts of Dmowski, who ...
- Polish Peasant Party
- (from the article "Gomulka, Wladyslaw") Gomulka was ruthless in eliminating all opposition to the Communist rule. He personally led the ...
- Polish Rebellion
- (from the article "Poland") ...All this did not prevent Russia and Prussia from further diminishing Poland's territory with the ...
- Polish School
- (from the article "motion picture, history of the") ...restrictions between 1945 and 1953, with a "thaw" during the late 1950s under Soviet premier ...
- Polish Social Democratic Party
- (from the article "Poland") ...revolution and Poland's independence. At a conference held in Paris in 1892, the Polish Socialist ...
- Polish Socialist Party
- (from the article "Pilsudski, Jozef") Pilsudski returned in 1892, determined to organize an insurrection and to work for the reestablishment ...
- Polish State Railways
- (from the article "Poland") ...freight and passengers. In the last decade of the 20th century, there was a 41 ...
- Polish Succession, War of the
- (1733-38), general European conflict waged ostensibly to determine the successor of the king of Poland, ... [9 Related Articles]
- Polish Thermopylae
- (from the article "Podlaskie") ...was created; its population consisted of Poles, Belarusians, and Jews. In September 1939 the Polish ...
- Polish United Workers' Party
- (from the article "Poland") Beginning in 1948, Poland was governed by the Polish United Workers' Party (PUWP; Polska Zjednoczona ...
- Polish-Lithuanian Commonwealth
- (from the article "Ukraine") ...Ruthenians, as had happened earlier in Galicia. In 1569, by the Union of Lublin, the ...
- Polish-Turkish War
- (from the article "Poland") Although Poland remained neutral in the Thirty Years' War (1618-48), Sigismund stealthily supported the Habsburgs, ...
- polishing
- (from the article "flatware") After the pieces have been electroplated, their surfaces are dull and require polishing. Hand polishing ...
- polishing stick
- (from the article "abrasive") ...to make them more suitable for use as lapping abrasive or perhaps as sandblasting grain. ...
- Polissya zone
- (from the article "Ukraine") The Polissya zone lies in the northwest and north. More than one-third of its area-about ...
- Polistes
- (from the article "social behaviour in animals") ...nest after the first food has been eaten, a process called progressive provisioning. From this ...
- Politburo
- in Russian and Soviet history, the supreme policy-making body of the Communist Party of the ... [6 Related Articles]
- politeia
- (from the article "constitution") ...theoretical, normative, and descriptive writings of Aristotle. In his Politics, Nicomachean Ethics, Constitution of Athens, ...
- Polites, Geoffrey Paul
- Australian automotive executive rose through the ranks at Ford Motor Co. during a nearly 40-year ...
- Politian
- Italian poet and humanist, the friend and protege of Lorenzo de' Medici, and one of ... [6 Related Articles]
- political action committee
- in U.S. politics, an organization whose purpose is to raise and distribute campaign funds to ...
- political anthropology
- (from the article "anthropology") While the intellectual and methodological roots of political anthropology can be traced to Montesquieu and ...
- political arithmetic
- (from the article "probability and statistics") During the 19th century, statistics grew up as the empirical science of the state and ...
- Political Bureau
- (from the article "China") Parallel to the State Council system is the central leadership of the CCP. The distribution ...
- political cartoon
- (from the article "Kirby, Rollin") American political cartoonist who gave modern cartooning decisive impetus in the direction of graphic simplicity ...
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