Donaustadt ( German pronunciation: [ˈdoːnaʊˌʃtat] ; Viennese : Donaustod ; " Danube City") is the 22nd district of Vienna , Austria ( German : 22. Bezirk, Donaustadt ). Donaustadt is the eastern district of Vienna.
119-456: The Donaustadt district is situated in the northeast part of Vienna and is the largest of the districts by area, occupying about one-quarter of the Vienna city area, 102.24 square kilometres (39.48 sq mi). It borders the 2nd District ( Leopoldstadt ), the 11th District ( Simmering ), and the 21st District ( Floridsdorf ), as well as parts of Lower Austria . The district has a large part to
238-930: A grain boundary . Like a grain boundary, a twin boundary has different crystal orientations on its two sides. But unlike a grain boundary, the orientations are not random, but related in a specific, mirror-image way. Mosaicity is a spread of crystal plane orientations. A mosaic crystal consists of smaller crystalline units that are somewhat misaligned with respect to each other. In general, solids can be held together by various types of chemical bonds , such as metallic bonds , ionic bonds , covalent bonds , van der Waals bonds , and others. None of these are necessarily crystalline or non-crystalline. However, there are some general trends as follows: Metals crystallize rapidly and are almost always polycrystalline, though there are exceptions like amorphous metal and single-crystal metals. The latter are grown synthetically, for example, fighter-jet turbines are typically made by first growing
357-458: A humid subtropical ( Köppen : Cfa ) classification. The city has warm, showery summers, with average high temperatures ranging between 25 to 27 °C (77 to 81 °F) and a record maximum exceeding 38 °C (100 °F). Winters are relatively dry and cold with average temperatures at about freezing point. Spring is variable and autumn cool, with a chance of snow in November. Precipitation
476-515: A molten condition nor entirely in solution, but the high temperature and pressure conditions of metamorphism have acted on them by erasing their original structures and inducing recrystallization in the solid state. Other rock crystals have formed out of precipitation from fluids, commonly water, to form druses or quartz veins. Evaporites such as halite , gypsum and some limestones have been deposited from aqueous solution, mostly owing to evaporation in arid climates. Water-based ice in
595-619: A molten fluid, or by crystallization out of a solution. Some ionic compounds can be very hard, such as oxides like aluminium oxide found in many gemstones such as ruby and synthetic sapphire . Covalently bonded solids (sometimes called covalent network solids ) are typically formed from one or more non-metals, such as carbon or silicon and oxygen, and are often very hard, rigid, and brittle. These are also very common, notable examples being diamond and quartz respectively. Weak van der Waals forces also help hold together certain crystals, such as crystalline molecular solids , as well as
714-416: A "crystal" is based on the microscopic arrangement of atoms inside it, called the crystal structure . A crystal is a solid where the atoms form a periodic arrangement. ( Quasicrystals are an exception, see below ). Not all solids are crystals. For example, when liquid water starts freezing, the phase change begins with small ice crystals that grow until they fuse, forming a polycrystalline structure. In
833-630: A decline in the Viennese population. After World War II, the Soviets used force to repatriate key workers of Czech, Slovak and Hungarian origins to return to their ethnic homelands to further the Soviet bloc economy. The population of Vienna generally stagnated or declined through the remainder of the 20th century, not demonstrating significant growth again until the census of 2000. In 2020, Vienna's population remained significantly below its reported peak in 1916. Under
952-776: A different, probably Slavonic origin, and originally referred to an Avar fort in the area. Slovene speakers call the city Dunaj , which in other Central European Slavic languages means the river Danube , on which the city stands. Duchy of Austria 1156–1453 [REDACTED] Archduchy of Austria 1453–1485, 1490–1804 [REDACTED] Principality of Hungary 1485–1490 [REDACTED] Austrian Empire 1804–1867 [REDACTED] Austria-Hungary 1867–1918 [REDACTED] First Austrian Republic 1919–1934 [REDACTED] Federal State of Austria 1934–1938 [REDACTED] Nazi Germany 1938–1945 [REDACTED] Allied-occupied Austria 1945–1955 [REDACTED] Austria 1955–present In
1071-687: A few more days until the Soviet Navy ’s Danube Flotilla naval force arrived with reinforcements. The remaining defending soldiers surrendered that same day. After the war, Vienna was part of Soviet-occupied Eastern Austria until September 1945. That month, Vienna was divided into sectors by the four powers: the US, the UK, France, and the Soviet Union and supervised by an Allied Commission . The four-power occupation of Vienna differed in one key respect from that of Berlin:
1190-555: A fraction of a millimetre to several centimetres across, although exceptionally large crystals are occasionally found. As of 1999 , the world's largest known naturally occurring crystal is a crystal of beryl from Malakialina, Madagascar , 18 m (59 ft) long and 3.5 m (11 ft) in diameter, and weighing 380,000 kg (840,000 lb). Some crystals have formed by magmatic and metamorphic processes, giving origin to large masses of crystalline rock . The vast majority of igneous rocks are formed from molten magma and
1309-501: A green meadow, relates to district part Hirschstetten . The Donaustadt District Museum is located on the Kagraner square, and it houses a permanent exhibition of the history of the district parts. The Austrian Horticulture Museum ( Österreichische Gartenbaumuseum ) has been in Kagran since 1977, and it houses the largest collection of native Austrian horticulture and garden care. The collection
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#17328545875791428-630: A major prestige project. Former suburbs were incorporated, and the city of Vienna grew dramatically. In 1918, after World War I , Vienna became capital of the Republic of German-Austria , and then in 1919 of the First Republic of Austria . From the late-19th century to 1938, the city remained a center of high culture and of modernism . A world capital of music, Vienna played host to composers such as Johannes Brahms , Anton Bruckner , Gustav Mahler , and Richard Strauss . The city's cultural contributions in
1547-453: A ninth area, Donau City (officially part of Kaisermühlen), which is between the Alte Donau ("Old Danube ") and Neue Donau ("New Danube"). It was constructed recently, consisting of many modern buildings and skyscrapers, of which most contain offices. In addition, another area of Donaustadt, Lobau , contains a large forest and meadow. Altogether, about 59% of the district is greenery, which
1666-618: A novel and published it. Occupied Vienna is also depicted in the 1991 Philip Kerr novel, A German Requiem . The four-power control of Vienna lasted until the Austrian State Treaty was signed in May 1955 and came into force on 27 July 1955. By October, all soldiers had left the country. That year, after years of reconstruction and restoration, the State Opera and the Burgtheater , both on
1785-608: A perfect, exactly repeating pattern. However, in reality, most crystalline materials have a variety of crystallographic defects : places where the crystal's pattern is interrupted. The types and structures of these defects may have a profound effect on the properties of the materials. A few examples of crystallographic defects include vacancy defects (an empty space where an atom should fit), interstitial defects (an extra atom squeezed in where it does not fit), and dislocations (see figure at right). Dislocations are especially important in materials science , because they help determine
1904-517: A riot broke out in the city. The protestors, enraged by the decision, set the Palace of Justice ablaze. The police attempted to end the revolt with force and killed at least 84 protestors, with 5 policemen also dying. In 1933, right-wing Chancellor Engelbert Dollfuss dissolved the parliament , essentially letting him run the country as a dictatorship , banned the Communist Party and severely limited
2023-534: A silver crossbar stripe with gold crosier holding a red paper bag . The figure is the heraldic crest of the Scottish Abbey ( Schottenstift ), now removed, operated as a farm in Breitenlee. In the center panel, Saint George is shown as the dragon slayer in golden armor, on a silver horse. The presentation represents the district part of Kagran and goes back to the patronage of the Kagraner parish. Law excludes
2142-434: A single crystal of titanium alloy, increasing its strength and melting point over polycrystalline titanium. A small piece of metal may naturally form into a single crystal, such as Type 2 telluric iron , but larger pieces generally do not unless extremely slow cooling occurs. For example, iron meteorites are often composed of single crystal, or many large crystals that may be several meters in size, due to very slow cooling in
2261-717: A single solid. Polycrystals include most metals , rocks, ceramics , and ice . A third category of solids is amorphous solids , where the atoms have no periodic structure whatsoever. Examples of amorphous solids include glass , wax , and many plastics . Despite the name, lead crystal, crystal glass , and related products are not crystals, but rather types of glass, i.e. amorphous solids. Crystals, or crystalline solids, are often used in pseudoscientific practices such as crystal therapy , and, along with gemstones , are sometimes associated with spellwork in Wiccan beliefs and related religious movements. The scientific definition of
2380-643: A third of its population. In 1804, during the Napoleonic Wars , Vienna became the capital of the newly formed Austrian Empire . The city continued to play a major role in European and world politics, including hosting the Congress of Vienna in 1814–15. The city also saw major uprisings against Habsburg rule in 1848 , which were suppressed. After the Austro-Hungarian Compromise of 1867 , Vienna remained
2499-585: A total of 15.9% of the minority population was born in Austria. About 2.3% expressed as a language Serbian , 1.9% Turkish , and 1.1% Croatian . Donaustadt, due to a very small proportion of foreigners, has one of the highest populations of people of Roman Catholic faith, at 54.7%, in Vienna (citywide 49.2%). There are 13 municipal districts in Roman Catholic parishes, from the City Deanery 22 form. In contrast,
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#17328545875792618-435: A wide range of properties. Polyamorphism is a similar phenomenon where the same atoms can exist in more than one amorphous solid form. Crystallization is the process of forming a crystalline structure from a fluid or from materials dissolved in a fluid. (More rarely, crystals may be deposited directly from gas; see: epitaxy and frost .) Crystallization is a complex and extensively-studied field, because depending on
2737-646: A widespread prehistorical cult of Vindos , a Celtic deity who survives in Irish mythology as the warrior and seer Fionn mac Cumhaill. A variant of this Celtic name could be preserved in the Czech , Slovak , Polish and Ukrainian names of the city ( Vídeň , Viedeň , Wiedeń and Відень respectively) and in that of the city's district Wieden . The name of the city in Hungarian ( Bécs ), Serbo-Croatian ( Beč , Беч ) and Ottoman Turkish ( بچ , Beç ) has
2856-451: Is 30% of all the green spaces in all of Vienna. The area went through a dramatic change as a result of the 1870–1875 legislation Wiener Donauregulierung . Were the original Danube to branch out into its many arms, it would take up a considerable area. In order to control the danger of the Danube flooding over, a side channel (as the " New Danube ") was built parallel to the river, creating
2975-424: Is a solid material whose constituents (such as atoms , molecules , or ions ) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape , consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation
3094-445: Is a noncrystalline form. Polymorphs, despite having the same atoms, may have very different properties. For example, diamond is the hardest substance known, while graphite is so soft that it is used as a lubricant. Chocolate can form six different types of crystals, but only one has the suitable hardness and melting point for candy bars and confections. Polymorphism in steel is responsible for its ability to be heat treated , giving it
3213-455: Is accounted for by agricultural land, a value only Favoriten and Floridsdorf exceeded. The bulk of the remaining green areas account for 25.71% as forests (in Lobau) or 13.45% in meadows. With a share of 8.60% of the district area, surface waters take a very high priority in use. Here the waters of the Danube and its Bayou are crucial. The proportion of trafficked area at the district is 8.02%, with
3332-724: Is borrowed from the homonymous Italian name. The German name Wien comes from the name of the river Wien , mentioned ad UUeniam in 881 ( Wenia- in modern writing). The name of the Roman settlement on the same emplacement is of Celtic extraction Vindobona , probably meaning "white village, white settlement" from Celtic roots, vindo- , meaning "white" (Old Irish find "white", Welsh gwyn / gwenn , Old Breton guinn "white, bright" > Breton gwenn "white"), and -bona "foundation, settlement, village", related to Old Irish bun "base, foundation" and Welsh bon , same meaning. The Celtic word vindos may reflect
3451-452: Is completely surrounded by Lower Austria , and lies around 50 km (31 mi) west of Slovakia and its capital Bratislava , 60 km (37 mi) northwest of Hungary , and 60 km (37 mi) south of Moravia ( Czech Republic ). The once Celtic settlement of Vedunia was converted by the Romans into the castrum Vindobona (province of Pannonia ) in the 1st century, and
3570-509: Is composed of sandy Central and Grobkiesen together, which through the Danube have been deposited. The plattigen stones are usually sandstone from the nearby Vienna . The round Gerölle consist mostly of crystalline rocks such as granite , gneiss , crystal , etc. The granite comes just as the black amphibolite from the Bohemian mass . The greenish-gray gneiss was up from the Central Alps and
3689-461: Is generally moderate throughout the year, averaging around 600 mm (23.6 in) annually, with considerable local variations, the Vienna Woods region in the west being the wettest part (700 to 800 mm (28 to 31 in) annually) and the flat plains in the east being the driest part (500 to 550 mm (20 to 22 in) annually). Snow in winter is common, even if not so frequent compared to
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3808-575: Is impossible for an ordinary periodic crystal (see crystallographic restriction theorem ). The International Union of Crystallography has redefined the term "crystal" to include both ordinary periodic crystals and quasicrystals ("any solid having an essentially discrete diffraction diagram" ). Quasicrystals, first discovered in 1982, are quite rare in practice. Only about 100 solids are known to form quasicrystals, compared to about 400,000 periodic crystals known in 2004. The 2011 Nobel Prize in Chemistry
3927-479: Is its visible external shape. This is determined by the crystal structure (which restricts the possible facet orientations), the specific crystal chemistry and bonding (which may favor some facet types over others), and the conditions under which the crystal formed. By volume and weight, the largest concentrations of crystals in the Earth are part of its solid bedrock . Crystals found in rocks typically range in size from
4046-582: Is known as crystallography . The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification . The word crystal derives from the Ancient Greek word κρύσταλλος ( krustallos ), meaning both " ice " and " rock crystal ", from κρύος ( kruos ), "icy cold, frost". Examples of large crystals include snowflakes , diamonds , and table salt . Most inorganic solids are not crystals but polycrystals , i.e. many microscopic crystals fused together into
4165-473: Is mechanically very strong, the sheets are rather loosely bound to each other. Therefore, the mechanical strength of the material is quite different depending on the direction of stress. Not all crystals have all of these properties. Conversely, these properties are not quite exclusive to crystals. They can appear in glasses or polycrystals that have been made anisotropic by working or stress —for example, stress-induced birefringence . Crystallography
4284-493: Is perhaps most well known for its Gemeindebauten , public housing buildings. Between 1925 and 1934, over 60,000 new apartments were built in the Gemeindebauten. Apartments were assigned on the basis of a point system favoring families and less affluent citizens. In July 1927 , after three nationalist far-right paramilitary members were acquitted of the killing of two social democratic Republikanischer Schutzbund members,
4403-601: Is plentiful. Remains of the military camp have been found under the city, as well as fragments of the canal system and figurines. Close ties with other Celtic peoples continued through the ages. The Irish monk Saint Colman (or Koloman, Irish Colmán , derived from colm "dove") is buried in Melk Abbey and Saint Fergil (Virgil the Geometer) served as Bishop of Salzburg for forty years. Irish Benedictines founded twelfth-century monastic settlements; evidence of these ties persists in
4522-413: Is the capital, most populous city , and one of nine federal states of Austria . It is Austria's primate city , with just over two million inhabitants. Its larger metropolitan area has a population of nearly 2.9 million, representing nearly one-third of the country's population. Vienna is the cultural , economic , and political center of the country, the fifth-largest city by population in
4641-425: Is the emblem of Aspern , a solitary aspen tree. In the upper right part, a heraldic symbol of a golden well is for the district part Süßenbrunn . Referring to existing wells, it shows the fountain in front of a blue background on a gray stone floor below. The fountain is covered, and on a golden rope hangs a bucket. At left-center, the heraldic coat of arms of the Breitenlee displayed. It shows 2 red stripes split by
4760-530: Is the seat of the Metropolitan Roman Catholic Archdiocese of Vienna , in which is also vested the exempt Ordinariate for Byzantine-Rite Catholics in Austria; its Archbishop is Cardinal Christoph Schönborn . Many Catholic Churches in central Vienna feature performances of religious or other music, including masses sung to classical music and organ. Some of Vienna's most significant historical buildings are Catholic churches, including
4879-424: Is the type of impurities present in a corundum crystal. In semiconductors , a special type of impurity, called a dopant , drastically changes the crystal's electrical properties. Semiconductor devices , such as transistors , are made possible largely by putting different semiconductor dopants into different places, in specific patterns. Twinning is a phenomenon somewhere between a crystallographic defect and
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4998-875: The Austrian Armed Forces shelled the Karl-Marx-Hof , a civilian housing estate, and the Schutzbund surrendered. On 15 March 1938, three days after German troops had first entered Austria, Adolf Hitler arrived in Vienna. 200,000 Austrians greeted him at the Heldenplatz , where he held a speech from a balcony in the Neue Burg, in which he announced that Austria would be absorbed into Nazi Germany . The persecution of Jews started almost immediately, Viennese Jews were harassed and hounded, their homes and businesses plundered. Some were forced to scrub pro-independence slogans off
5117-663: The Donauinsel between the Danube and the New. The area of the Donaustadt District was primarily shaped by the river Danube, which, over time, formed terraces . Especially during the Ice Age, frost came through to form large debris dimensions, by the Danube in the Vienna Basin . In the warm phase, in the section following the Danube, gravel terraces formed out in the district area, dividing
5236-669: The European Union , and the most-populous of the cities on the Danube river . The city lies on the eastern edge of the Vienna Woods ( Wienerwald ), the northeasternmost foothills of the Alps , that separate Vienna from the more western parts of Austria, at the transition to the Pannonian Basin . It sits on the Danube , and is traversed by the highly regulated Wienfluss ( Vienna River ). Vienna
5355-735: The Ringstraße , reopened to the public. In the Autumn of 1956, Vienna accepted many Hungarian refugees , who had fled Hungary after an attempted revolution . The city experienced another wave of refugees after the Prague Spring in Czechoslovakia in 1968, as well as after the collapse of Yugoslavia in 1991. In 1972 the construction of the Donauinsel and the excavation of the New Danube began. In
5474-719: The Soviet air force . Only after the Allies had taken Italy did the next raids commence. From 17 March 1944, 51 air raids were carried out in Vienna. Targets of the bombings were primarily the city's oil refineries . However, around a third of the city center was destroyed, and culturally important buildings such as the State Opera and the Burgtheater were burned, and the Albertina was heavily damaged. These air raids lasted until March 1945, just before
5593-503: The St. Stephen's Cathedral ( Stephansdom ), Karlskirche , Peterskirche and the Votivkirche . On the banks of the Danube is a Buddhist Peace Pagoda , built in 1983 by the monks and nuns of Nipponzan Myohoji . Vienna is located in northeastern Austria, at the easternmost extension of the Alps in the Vienna Basin . The earliest settlement, at the location of today's inner city , was south of
5712-510: The Western and Eastern blocs , which deeply distrusted each other. The city experienced an economic upturn due to the Marshall Plan . The atmosphere of four-power Vienna is the background for Graham Greene 's screenplay for the film The Third Man (1949). The film's theme music was composed and performed by Viennese musician Anton Karas using a zither . Later he adapted the screenplay as
5831-447: The mechanical strength of materials . Another common type of crystallographic defect is an impurity , meaning that the "wrong" type of atom is present in a crystal. For example, a perfect crystal of diamond would only contain carbon atoms, but a real crystal might perhaps contain a few boron atoms as well. These boron impurities change the diamond's color to slightly blue. Likewise, the only difference between ruby and sapphire
5950-528: The 16th century of the Habsburg emperors of the Holy Roman Empire with an interruption between at the turn to the 17th century until 1806, becoming an important center in the empire. In the 16th and 17th centuries, Christian forces twice stopped Ottoman armies outside Vienna, in the 1529 siege of Vienna and the 1683 Battle of Vienna . The Great Plague of Vienna ravaged the city in 1679, killing nearly
6069-504: The 1st century, the Romans set up the military camp of Vindobona in Pannonia on the site of today's Vienna city center near the Danube with an adjoining civilian town to secure the borders of the Roman Empire . Construction of the legionary camp began around 97 AD. At its peak, Vindobona had a population of around 15,000 people. It was a part of a trade and communications network across
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#17328545875796188-590: The 2021 census, 49.0% of Viennese were Christian. Among them, 31.8% were Catholic , 11.2% were Eastern Orthodox , and 3.7% were Protestant , mostly Lutheran , 34.1% had no religious affiliation, 14.8% were Muslim , and 2% were of other religions, including Jewish. One sources estimates that Vienna's Jewish community is of 8,000 members meanwhile another suggest 15,000. Based on information provided to city officials by various religious organizations about their membership, Vienna's Statistical Yearbook 2019 reports in 2018 an estimated 610,269 Roman Catholics, or 32.3% of
6307-801: The Czech mass removed. Further round to oval Kiese consist of limestone and comes from the Northern Limestone Alps . Below the gravel, saturated with groundwater, are sands of the Pannon iums, which were deposited here over 9.7 to 8 million years ago. In several kilometers deep (a few miles), the foothills of the Northern Limestone Alps include shifts from the Mesozoic , which have gas and oil about three kilometers deep (2 miles). The developed area of Donaustadt covers 25.0% (Vienna citywide: 33.32%) of
6426-601: The Empire. Roman emperor Marcus Aurelius may have died here in 180 AD during a campaign against the Marcomanni . After a Germanic invasion in the second century the city was rebuilt. It served as a seat of the Roman government until the fifth century, when the population fled due to the Huns invasion of Pannonia. The city was abandoned for several centuries. Evidence of the Romans in the city
6545-595: The Greens 8.7% and the KPÖ 1.4% the new founded BZÖ 1.1%. The LIF reached 0.59%. The seal of Donaustadt is divided into eight panels, which represent parts of the district. In the upper left part of the crest, is the emblem of the talking Stadlau with a standing in the Au Stadel. The Stadel is on a greenfield site with trees and a blue background. The Stadel is locked with a thatched roof and two points which are red flags. At top-center
6664-533: The Nazi regime, 65,000 Jews were deported and murdered in concentration camps by Nazi forces; approximately 130,000 fled. By 2001, 16% of people living in Austria had nationalities other than Austrian, nearly half of whom were from former Yugoslavia ; the next most numerous nationalities in Vienna were Turks (39,000; 2.5%), Poles (13,600; 0.9%) and Germans (12,700; 0.8%). As of 2012 , an official report from Statistics Austria showed that more than 660,000 (38.8%) of
6783-787: The Parliament, the French in Hotel Kummer on Mariahilferstraße, the Americans in the National Bank , and the British in Schönnbrunn Palace . The division of the city was not comparable to that of Berlin . Although the borders between the sectors were marked, travel between them was freely possible. During the ten years of the four-power occupation, Vienna was a hotbed for international espionage between
6902-399: The Soviet troops started the Vienna offensive . The Red Army , who had previously marched through Hungary , first entered Vienna on 6 April. They first attacked the eastern and southern suburbs, before moving on to the western suburbs. By the 8th they had the center of the city surrounded. The following day the Soviets started with the infiltration of the city center. Fighting continued for
7021-422: The Viennese population have full or partial migrant background, mostly from Ex-Yugoslavia, Turkey, Germany, Poland, Romania and Hungary. From 2005 to 2015 the city's population grew by 10.1%. According to UN-Habitat , Vienna could be the fastest growing city out of 17 European metropolitan areas until 2025 with an increase of 4.65% of its population, compared to 2010. Religion in Vienna (2021) According to
7140-455: The Western and Southern regions of Austria. Vienna is composed of 23 districts ( Bezirke ). Administrative district offices in Vienna, called Magistratische Bezirksämter, serve functions similar to those in the other Austrian states (called Bezirkshauptmannschaften), the officers being subject to the mayor of Vienna; with the notable exception of the police, which is under federal supervision. Crystal A crystal or crystalline solid
7259-429: The air ( ice fog ) more often grow from a supersaturated gaseous-solution of water vapor and air, when the temperature of the air drops below its dew point , without passing through a liquid state. Another unusual property of water is that it expands rather than contracts when it crystallizes. Many living organisms are able to produce crystals grown from an aqueous solution , for example calcite and aragonite in
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#17328545875797378-402: The arms of Essling . It shows a sash decorated with a diamond pattern, on golden eagle wings, set on red/silver split field. The emblem is the emblem of the Lords of Eslarn removed. The bottom-left panel has a golden ship mill on a blue background for the district part Kaisermühlen along the Danube. It symbolizes the many ship mills, which once existed. At bottom-right, a jumping gold deer, on
7497-402: The capital of Austria-Hungary (1867–1918). In 1910, Vienna had more than two million inhabitants and was the third largest city in Europe after London and Paris. Around the start of the 20th century, Vienna was the city with the second-largest Czech population in the world (after Prague ). After World War I, many Czechs and Hungarians returned to their ancestral countries, resulting in
7616-404: The capital of what became the Austro-Hungarian Empire . The city functioned as a center of classical music, for which the title of the First Viennese School (Haydn/Mozart/Beethoven) is sometimes applied. During the latter half of the 19th century, Vienna developed what had previously been the bastions and glacis into the Ringstraße , a new boulevard surrounding the historical town and
7735-510: The case of most molluscs or hydroxylapatite in the case of bones and teeth in vertebrates . The same group of atoms can often solidify in many different ways. Polymorphism is the ability of a solid to exist in more than one crystal form. For example, water ice is ordinarily found in the hexagonal form Ice I h , but can also exist as the cubic Ice I c , the rhombohedral ice II , and many other forms. The different polymorphs are usually called different phases . In addition,
7854-408: The central area of the city, known as the first district, constituted an international zone in which the four powers alternated control on a monthly basis. The city was policed by the four powers on a day-to-day basis using the "four soldiers in a jeep" method, which had one soldier from each nation sitting together. The four powers all had separate headquarters, the Soviets in Palais Epstein next to
7973-410: The city were arrested. Adolf Eichmann held office in the expropriated Palais Rothschild and organized the expropriation and persecution of the Jews. Of the almost 200,000 Jews in Vienna, around 120,000 were driven to emigrate and around 65,000 were killed. After the end of the war, the Jewish population of Vienna was only about 5,000. In 1942 the city suffered its first air raid , carried out by
8092-404: The conditions, a single fluid can solidify into many different possible forms. It can form a single crystal , perhaps with various possible phases , stoichiometries , impurities, defects , and habits . Or, it can form a polycrystal , with various possibilities for the size, arrangement, orientation, and phase of its grains. The final form of the solid is determined by the conditions under which
8211-409: The crystal can shrink or stretch it. Another is birefringence , where a double image appears when looking through a crystal. Moreover, various properties of a crystal, including electrical conductivity , electrical permittivity , and Young's modulus , may be different in different directions in a crystal. For example, graphite crystals consist of a stack of sheets, and although each individual sheet
8330-411: The crystal is one grain in a polycrystalline solid. The flat faces (also called facets ) of a euhedral crystal are oriented in a specific way relative to the underlying atomic arrangement of the crystal : they are planes of relatively low Miller index . This occurs because some surface orientations are more stable than others (lower surface energy ). As a crystal grows, new atoms attach easily to
8449-532: The crystals may form hexagons, such as ordinary water ice ). Crystals are commonly recognized, macroscopically, by their shape, consisting of flat faces with sharp angles. These shape characteristics are not necessary for a crystal—a crystal is scientifically defined by its microscopic atomic arrangement, not its macroscopic shape—but the characteristic macroscopic shape is often present and easy to see. Euhedral crystals are those that have obvious, well-formed flat faces. Anhedral crystals do not, usually because
8568-606: The degree of crystallization depends primarily on the conditions under which they solidified. Such rocks as granite , which have cooled very slowly and under great pressures, have completely crystallized; but many kinds of lava were poured out at the surface and cooled very rapidly, and in this latter group a small amount of amorphous or glassy matter is common. Other crystalline rocks, the metamorphic rocks such as marbles , mica-schists and quartzites , are recrystallized. This means that they were at first fragmental rocks like limestone , shale and sandstone and have never been in
8687-489: The district area, but this is the second-lowest value of a municipality in Vienna. The developed area itself is distributed as 57.4% to 28.4% as residential versus other. Donaustadt thus has a very high proportion of residences. The proportion of land to the cultural, religious, sporting or public sector are dedicated, coincides with 6.0% share. Greenspaces in Donaustadt took a total share of 58.4%. Nearly 51.9% of that green space
8806-425: The district is still relatively sparsely populated. With 1,420 inhabitants per square kilometer (2005), only the district Hietzing was more sparsely populated. In Donaustadt, the population in 2005 was younger on average than in Vienna as a whole. 18.0% of the district's population were children under 15 years, the highest value in Vienna (citywide 14.6%). The proportion of the population from 15 to 59 years at 62.9%
8925-525: The early part of the 20th century. Vienna was home to the world's first psychoanalyst, Sigmund Freud . The historic center of Vienna is rich in architectural ensembles, including Baroque palaces and gardens, and the late-19th-century Ringstraße , which is lined with grand buildings, monuments, and parks. In 2024, Vienna retained its position as most livable city per the Economist Intelligence Unit , and has spent every year since 2015 in
9044-449: The eight faces of the octahedron belong to another crystallographic form reflecting a different symmetry of the isometric system. A crystallographic form is described by placing the Miller indices of one of its faces within brackets. For example, the octahedral form is written as {111}, and the other faces in the form are implied by the symmetry of the crystal. Forms may be closed, meaning that
9163-710: The final block of ice, each of the small crystals (called " crystallites " or "grains") is a true crystal with a periodic arrangement of atoms, but the whole polycrystal does not have a periodic arrangement of atoms, because the periodic pattern is broken at the grain boundaries . Most macroscopic inorganic solids are polycrystalline, including almost all metals , ceramics , ice , rocks , etc. Solids that are neither crystalline nor polycrystalline, such as glass , are called amorphous solids , also called glassy , vitreous, or noncrystalline. These have no periodic order, even microscopically. There are distinct differences between crystalline solids and amorphous solids: most notably,
9282-588: The first half of the 20th century included, among many, the Vienna Secession movement in art, the Second Viennese School , the architecture of Adolf Loos , the philosophy of Ludwig Wittgenstein , and the Vienna Circle . The city of Vienna became the center of socialist politics from 1919 to 1934, a period referred to as Red Vienna ( Das rote Wien ). After a new breed of socialist politicians won
9401-520: The fluid is being solidified, such as the chemistry of the fluid, the ambient pressure , the temperature , and the speed with which all these parameters are changing. Specific industrial techniques to produce large single crystals (called boules ) include the Czochralski process and the Bridgman technique . Other less exotic methods of crystallization may be used, depending on the physical properties of
9520-415: The form can completely enclose a volume of space, or open, meaning that it cannot. The cubic and octahedral forms are examples of closed forms. All the forms of the isometric system are closed, while all the forms of the monoclinic and triclinic crystal systems are open. A crystal's faces may all belong to the same closed form, or they may be a combination of multiple open or closed forms. A crystal's habit
9639-402: The form of snow , sea ice , and glaciers are common crystalline/polycrystalline structures on Earth and other planets. A single snowflake is a single crystal or a collection of crystals, while an ice cube is a polycrystal . Ice crystals may form from cooling liquid water below its freezing point, such as ice cubes or a frozen lake. Frost , snowflakes, or small ice crystals suspended in
9758-463: The form of Vienna's great Schottenstift monastery (Scots Abbey), once home to many Irish monks. In 976, Leopold I of Babenberg became count of the Eastern March , a district centered on the Danube on the eastern frontier of Bavaria . This initial district grew into the duchy of Austria . Each succeeding Babenberg ruler expanded the march east along the Danube, eventually encompassing Vienna and
9877-582: The influence of the Social Democratic Party . This led to a civil war between the right-wing government and socialist forces the following year, which started in Linz and quickly spread to Vienna. Socialist members of the Republikanischer Schutzbund barricaded themselves inside the housing estates and exchanged fire with the police and paramilitary groups. The fighting in Vienna ended after
9996-458: The interlayer bonding in graphite . Substances such as fats , lipids and wax form molecular bonds because the large molecules do not pack as tightly as atomic bonds. This leads to crystals that are much softer and more easily pulled apart or broken. Common examples include chocolates, candles, or viruses. Water ice and dry ice are examples of other materials with molecular bonding. Polymer materials generally will form crystalline regions, but
10115-638: The lands immediately east. In 1155, Henry II, Duke of Austria moved the Babenberg family residence with the founding of the Schottenstift from Klosterneuburg in Lower Austria to Vienna. From that time, Vienna remained the center of the Babenberg dynasty. Hungary occupied the city between 1485 and 1490. Vienna became at the turn to the 16th century the seat of the Aulic Council and subsequently later in
10234-513: The largest German-speaking cities in the world, being the largest in the 18th and 19th century, peaking at two million inhabitants before it was overtaken by Berlin at the beginning of the 20th century. Vienna is host to many major international organizations , including the United Nations, OPEC and the OSCE . In 2001, the city center was designated a UNESCO World Heritage Site . In July 2017, it
10353-462: The largest population growth of all districts in Vienna. Due to the large size of today's district area and the history of horticultural or agricultural, large areas for a progressive urbanization are available. The protection of the forested Lobau section, a large share of the district land area, has limited the level of urbanization at the same time. Even before incorporation, the autonomous communities still had very high growth rates. Between 1869 and
10472-471: The lengths of the molecules usually prevent complete crystallization—and sometimes polymers are completely amorphous. A quasicrystal consists of arrays of atoms that are ordered but not strictly periodic. They have many attributes in common with ordinary crystals, such as displaying a discrete pattern in x-ray diffraction , and the ability to form shapes with smooth, flat faces. Quasicrystals are most famous for their ability to show five-fold symmetry, which
10591-422: The local elections they engaged in a brief but ambitious municipal experiment. Social democrats had won an absolute majority in the May 1919 municipal election and commanded the city council with 100 of the 165 seats. Jakob Reumann was appointed by the city council as city mayor. The theoretical foundations of so-called Austromarxism were established by Otto Bauer , Karl Renner , and Max Adler . Red Vienna
10710-412: The meandering Danube while the city now spans both sides of the river. Elevation ranges from 151 to 542 m (495 to 1,778 ft). The city has a total area of 414.65 square kilometers (160.1 sq mi), making it the largest city in Austria by area. Vienna has a borderline oceanic ( Köppen : Cfb ) and humid continental climate ( Köppen : Dfb ), with some parts of the urban core being warm enough for
10829-468: The near Danube "zone of recent meander" and the higher-lying Prater Terrace. The slightly higher-lying terrace Prater comes from the Würmeiszeit (the most recent ice-age); the underlying terrace was created after the Ice Age. For older terraces, the intensive weathering is characteristic, with a layer of loess or clay . On the surface, DonauStadt has five to three feet (1.52 to 0.91 m) of gravel. This
10948-644: The others, at least) was formed by a resolution of the Vienna Landtag on June 29, 1946. The resolution was supposed to restore the borders between Vienna and Lower Austria . However, due to the Allied occupation of Austria following the Second World War, the resolution could not immediately take effect. In 1954, the Soviet occupying authorities accepted the re-districting proposal, and the resolution took effect on July 2, 1954. The district area, of Donaustadt, had
11067-620: The popular vote. In 1996, the FPÖ 's increasing popularity caused the SPÖ to lose the majority for the first time, when they gathered only 43% of the popular vote. In 2001, they regained the majority, claiming 54.25% of the vote. The FPÖ received 19.83%, the ÖVP had 11.83%, the Greens got 9.44%, and the Liberal Forum had 2.69%. At the elections 2010 it all changed significantly : SPÖ 47.9%, FPÖ 30.2%, ÖVP 9.5%,
11186-449: The population had no religion or other given. The Soviet occupation installed Communist Mathias Böhm as the first district director. Social democrat Leopold Horacek was the next one. Because the status of the district was ambiguous until 1954, public votes for director were not used. Horacek was confirmed by the first vote of the people in 1954, and until 1991, the SPÖ held about 55% of
11305-499: The population, and 200,000 (10.4%) Muslims, 70,298 (3.7%) Orthodox, 57,502 (3.0%) other Christians, and 9,504 (0.5%) other religions. A study conducted by the Vienna Institute of Demography estimated the 2018 proportions to be 34% Catholic, 30% unaffiliated, 15% Muslim, 10% Orthodox, 4% Protestant, and 6% other religions. As of the spring of 2014, Muslims made up 30% of the total proportion of schoolchildren in Vienna. Vienna
11424-413: The process of forming a glass does not release the latent heat of fusion , but forming a crystal does. A crystal structure (an arrangement of atoms in a crystal) is characterized by its unit cell , a small imaginary box containing one or more atoms in a specific spatial arrangement. The unit cells are stacked in three-dimensional space to form the crystal. The symmetry of a crystal is constrained by
11543-458: The proportion of people with Islamic faith is 4.3%, and the Orthodox Church has 2.8%, below the average (Vienna citywide: 7.8% or 6%). The proportion of Protestant residents stood at 4.5% in the overall context of Vienna. Nearly 28.7% of the district population in 2001 were not included in a religious community, but this is the second highest value of a municipality of Vienna. Further 5.1% of
11662-432: The requirement that the unit cells stack perfectly with no gaps. There are 219 possible crystal symmetries (230 is commonly cited, but this treats chiral equivalents as separate entities), called crystallographic space groups . These are grouped into 7 crystal systems , such as cubic crystal system (where the crystals may form cubes or rectangular boxes, such as halite shown at right) or hexagonal crystal system (where
11781-423: The rougher and less stable parts of the surface, but less easily to the flat, stable surfaces. Therefore, the flat surfaces tend to grow larger and smoother, until the whole crystal surface consists of these plane surfaces. (See diagram on right.) One of the oldest techniques in the science of crystallography consists of measuring the three-dimensional orientations of the faces of a crystal, and using them to infer
11900-444: The same atoms may be able to form noncrystalline phases . For example, water can also form amorphous ice , while SiO 2 can form both fused silica (an amorphous glass) and quartz (a crystal). Likewise, if a substance can form crystals, it can also form polycrystals. For pure chemical elements, polymorphism is known as allotropy . For example, diamond and graphite are two crystalline forms of carbon , while amorphous carbon
12019-509: The same decade, Austrian Chancellor Bruno Kreisky inaugurated the Vienna International Centre , a new area of the city created to host international institutions. Vienna has regained much of its former international stature by hosting international organisations, such as the United Nations. Because of the industrialization and migration from other parts of the Empire, the population of Vienna increased sharply during its time as
12138-528: The second-lowest value in Vienna. The former villages of Aspern and Essling are known as the place where Archduke Charles of Austria defeated Napoleon Bonaparte 's French army in 1809, at the Battle of Aspern-Essling . On essentially the same ground, Napoleon defeated the Austrian army two months later in the Battle of Wagram , which ended the war in a French victory. The relatively young district (compared to
12257-666: The southwest edge of Donaustadt. The 4 branches are (from west to east): the Danube Canal (German: Donaukanal ), the main Danube , the New Danube ( Neue Donau ), and the Old Danube ( Alte Donau ). The district is made up of eight territories (former villages), whose individual coats of arms make up the coat of arms for the whole district. In the current scheme, the district is divided into those official sub-sections (German: Bezirksteile ). The eight district parts are: In addition to these eight territories, Donaustadt also contains
12376-768: The streets. This culminated in the Kristallnacht , a nationwide pogrom against the Jews carried out by the Schutzstaffel and the Sturmabteilung , with support of the Hitler Youth and German civilians. All synagogues and prayer houses in the city were destroyed, bar the Stadttempel , due to its proximity to residential buildings. Vienna lost its status as a capital to Berlin , as Austria had ceased to exist. The few resistors in
12495-731: The substance, including hydrothermal synthesis , sublimation , or simply solvent-based crystallization . Large single crystals can be created by geological processes. For example, selenite crystals in excess of 10 m are found in the Cave of the Crystals in Naica, Mexico. For more details on geological crystal formation, see above . Crystals can also be formed by biological processes, see above . Conversely, some organisms have special techniques to prevent crystallization from occurring, such as antifreeze proteins . An ideal crystal has every atom in
12614-549: The top 2 places, bar 2021 due to the COVID-19 lockdowns . The place is mentioned as Οϋι[νδ]όβονα (Oui[nd]obona) in the 2nd century AD (Ptolemy, Geography , II, 14, 3); Vindobona in the 3rd century ( Itinerarium Antonini Augusti 233, 8); Vindobona in the 4th century ( Tabula Peutingeriana , V, 1); Vindomana ab. 400 ( Notitia Dignitatum , 145, 16); Vindomina, Vendomina in the 6th century ( Jordanes , De origine actibusque Getarum , 50, 264). The English name Vienna
12733-429: The underlying crystal symmetry . A crystal's crystallographic forms are sets of possible faces of the crystal that are related by one of the symmetries of the crystal. For example, crystals of galena often take the shape of cubes, and the six faces of the cube belong to a crystallographic form that displays one of the symmetries of the isometric crystal system . Galena also sometimes crystallizes as octahedrons, and
12852-620: The vacuum of space. The slow cooling may allow the precipitation of a separate phase within the crystal lattice, which form at specific angles determined by the lattice, called Widmanstatten patterns . Ionic compounds typically form when a metal reacts with a non-metal, such as sodium with chlorine. These often form substances called salts, such as sodium chloride (table salt) or potassium nitrate ( saltpeter ), with crystals that are often brittle and cleave relatively easily. Ionic materials are usually crystalline or polycrystalline. In practice, large salt crystals can be created by solidification of
12971-472: The west of the Danube , Danube Island and Old Danube . In the east and north, Donaustadt shares the Marchfeld . Overall, about 59 percent of the district's territory is in green areas, making 30 percent of Vienna's green space lie in the 22nd District. By Danube regulation , in 1870-75, the territory of the present district was radically changed. The Danube had originally spread out in numerous arms, so she
13090-424: The year 1910, the population had already increased 8-fold. Up to 1939 the strong growth had continued, doubling again. After a stagnation in the 1940s and 1950s, high growth recommenced in the 1960s, which until now, is among the highest of all municipal districts. Donaustadt reached a high growth rate, in 2006, with a population of 148,980 people, making it the district with the second largest population. Nevertheless,
13209-431: Was 9.7% (Vienna citywide: 18.7%). This was the second lowest value of a district of Vienna. As in the entire state, the proportion of foreigners, however, a growth in the 2001 figure, was at 7.4%. The highest proportion of foreigners in 2005 represented approximately 1.6% share of the district population as nationals from Serbia and Montenegro . Another 0.8% were Turkish , 0.8% Polish and 0.6% German citizens. In 2001,
13328-400: Was awarded to Dan Shechtman for the discovery of quasicrystals. Crystals can have certain special electrical, optical, and mechanical properties that glass and polycrystals normally cannot. These properties are related to the anisotropy of the crystal, i.e. the lack of rotational symmetry in its atomic arrangement. One such property is the piezoelectric effect , where a voltage across
13447-612: Was elevated to a municipium with Roman city rights in 212. This was followed by a time in the sphere of influence of the Lombards and later the Pannonian Avars , when Slavs formed the majority of the region's population. From the 8th century on, the region was settled by the Baiuvarii . In 1155, Vienna became the seat of the Babenbergs , who ruled Austria from 976 to 1246. In 1221, Vienna
13566-475: Was expanded in 2001 by collecting Sädtler (Austrian Museum flowers binding). The flower gardens Hirschstetten, with an office in Essling, Kultivationsbetriebe serve primarily as the city office. In addition, the site also includes plant and animal subjects: the gardens can be visited. The special museum Aspern-Essling 1809 dedicated to the museum as well as in bulk box Essling the Battle of Aspern . In 1972, Lobaumuseum
13685-562: Was founded for information on the ecology of Lobau and the Danube Auen and on the local flora and fauna. Moreover, the history of Lobau and the work of General Field Marshal Archduke Karl are represented. 48°13′05″N 16°28′59″E / 48.21806°N 16.48306°E / 48.21806; 16.48306 Vienna Vienna ( / v i ˈ ɛ n ə / vee- EN -ə ; German: Wien [viːn] ; Austro-Bavarian : Wean [veɐ̯n] )
13804-596: Was granted city rights. During the 16th century, the Habsburgs , who had succeeded the Babenbergs, established Vienna as the seat of the emperors of the Holy Roman Empire , a position it held until the empire's dissolution in 1806, with only a brief interruption. With the formation of the Austrian Empire in 1804, Vienna became the capital of it and all its successor states. Throughout the modern era Vienna has been among
13923-483: Was moved to the list of World Heritage in Danger . Vienna has been called the "City of Music" due to its musical legacy, as many famous classical musicians such as Beethoven , Brahms , Bruckner , Haydn , Mahler , Mozart , Schoenberg , Schubert , Johann Strauss I and Johann Strauss II lived and worked there. It played a pivotal role as a leading European music center, from the age of Viennese Classicism through
14042-471: Was now forced in a wide bed. As the flood threat has not been fully defused, during 1972 to 1987, a side channel (as the " New Danube ") was built parallel to the river, creating the long, thin Donauinsel ( Danube Island ) between the Danube and the New Danube. The former Danube flood plain is now controlled in the 4 branches, or fingers, of the river, as they separate and then rejoin, all within Vienna, along
14161-399: Was similar to the citywide average (63.4%), while the proportion of people aged 60 years or more was among the lowest of the Vienna districts at 19.1% (Vienna: 22.0%). The gender distribution in the district area in 2001 was 47.8% men and 52.2% women, the number of married people stood at 43.9% compared to 41.2%, above the average of Vienna. The proportion of foreign district residents in 2005
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