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Heinrich Daniel Ruhmkorff

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Heinrich Daniel Ruhmkorff ( Rühmkorff ) (15 January 1803 – 20 December 1877) was a German instrument maker who commercialised the induction coil (often referred to as the Ruhmkorff coil).

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84-583: Ruhmkorff was born in Hanover . He changed the "ü" to "u" in his name when living abroad. After an apprenticeship with a German mechanic, he moved to England. Contemporaneous and extant biographies have made the assertion that he worked with the inventor Joseph Bramah , but this is unlikely since Bramah died in 1814. He may, though, have worked for the Bramah company. In 1855, he set up a shop in Paris, where he gained

168-524: A consequence, a reluctant Britain was forced time and again to defend the king's German possessions. Nonetheless, Hanover remained a separately ruled territory with its own governmental bodies, and the country had to sign a treaty with Great Britain whenever Hanoverian troops fought on the British side of a war. Merged into the Napoleonic Kingdom of Westphalia in 1807, it was re-established as

252-647: A jungle house, and a show arena. The new Canadian-themed area, Yukon Bay, opened in 2010. In 2010 the Hanover Zoo had over 1.6 million visitors. There is also the Sea Life Centre Hanover , which is the first tropical aquarium in Germany. Another point of interest is the Old Town . In the centre are the large Marktkirche (Church St. Georgii et Jacobi , preaching venue of the bishop of

336-445: A population of about 3,850,000 and is the 8th largest metropolitan area in Germany. Hanover passed a population of 100,000 in 1875, and Hanover's population has grown since 1946, when Hanover became the capital of Lower Saxony state and it grew rapidly in 1950s and 60s due to West German Wirtschaftswunder . This also saw the growth of a large migrant population, drawn largely from Turkey , Greece and Italy . Hanover has also one of

420-498: A population of about 540,000. It is the largest city in Lower Saxony and is the 13th largest city in Germany. The Hanover Region , a district that surrounds the city of Hanover and cities like Langenhagen , Garbsen and Laatzen has a population of about 1,160,000 and is the largest District (Landkreis) in Germany. Hanover metropolitan region , which includes also cities like Braunschweig , Hildesheim and Göttingen , has

504-693: A pretext to stage a nationwide pogrom known as Kristallnacht (9 November 1938). On that day, the synagogue of Hanover, designed in 1870 by Edwin Oppler in neo-romantic style, was burnt by the Nazis. In September 1941, through the "Action Lauterbacher" plan, a ghettoisation of the remaining Hanoverian Jewish families began. Even before the Wannsee Conference , on 15 December 1941, the first Jews from Hanover were deported to Riga . A total of 2,400 people were deported, and very few survived. During

588-613: A reminder of the persecution of the Jews in Hanover. After the war a large group of Orthodox Jewish survivors of the nearby Bergen-Belsen concentration camp settled in Hanover. There was also a camp for Sinti and Romani people (see Romani Holocaust ), and dozens of forced labour subcamps of the Stalag XI-B prisoner-of-war camp for Allied POWs. As an important railway and road junction and production centre, Hanover

672-575: A reputation for the high quality of his electrical apparatus. Although Ruhmkorff is often credited with the invention of the induction coil , it was in fact invented by Nicholas Callan in 1836. Ruhmkorff's first coil, which he patented in 1851, utilized long windings of copper wire to achieve a spark of approximately 2 inches (50 mm) in length. In 1857, after examining a greatly improved version made by an American inventor, Edward Samuel Ritchie , Ruhmkorff improved his design (as did other engineers), using glass insulation and other innovations to allow

756-547: Is a forest originally used for deer and other game for the king's table. The 282-metre-high (925 ft) Telemax communications tower, the tallest building in Lower Saxony and the highest television tower in northern Germany, lies in the district of Groß-Buchholz. Some other notable towers are the VW-Tower in the city centre and the old towers of the former middle-age defence belt: Döhrener Tower , Lister Tower and

840-725: Is a forum for contemporary art. It features mostly exhibitions and projects of artists from Hanover. Electorate of Hanover The Electorate of Hanover ( German : Kurfürstentum Hannover or simply Kurhannover ) was an electorate of the Holy Roman Empire located in northwestern Germany that arose from the Principality of Calenberg . Although formally known as the Electorate of Brunswick-Lüneburg ( German : Kurfürstentum Braunschweig-Lüneburg ), it made Hanover its capital city. For most of its existence,

924-671: Is a heraldic motif associated with the German provinces of Lower Saxony and Westphalia , and the Dutch region of Twente as the electorate covered large portions of the original stem Duchy of Saxony . The electorate comprised large parts of the modern German state of Lower Saxony in Northern Germany . Beside the Principality of Calenberg it also included the former princely lands of Göttingen and Grubenhagen as well as

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1008-466: Is a vice-president city of Mayors for Peace , an international mayoral organisation mobilising cities and citizens worldwide to abolish and eliminate nuclear weapons by 2020. Hanover has an oceanic climate ( Köppen : Cfb ) independent of the isotherm. Although the city is not on a coastal location, the predominant air masses are still from the ocean, unlike other places further east or south-central Germany. The Hanover weather station has recorded

1092-526: Is commonly referred to as the elector of Hanover after his residence. Hanover acquired Bremen-Verden in 1719. The electorate was legally bound to be indivisible: it could add to its territory, but not alienate territory or be split up among several heirs; and its succession was to follow male primogeniture. The territory assigned to the electorate included the Brunswick-Lüneburg principalities of Calenberg, Grubenhagen, and Lüneburg (even though at

1176-866: Is headquarters for several Protestant organizations, including the World Communion of Reformed Churches , the Protestant Church in Germany , the Reformed Alliance , the United Evangelical Lutheran Church of Germany , and the Independent Evangelical-Lutheran Church . In 2015, 31.1% of the population were Protestant and 13.4% were Roman Catholic . The majority 55.5% were irreligious or other religion. The Historisches Museum Hanover (Historic museum) describes

1260-570: Is named after Heinrich Daniel Ruhmkorff. Hanover Hanover ( / ˈ h æ n oʊ v ər , - n ə v -/ HAN -oh-vər, HAN -ə-vər ; German : Hannover [haˈnoːfɐ] ; Low German : Hannober ) is the capital and largest city of the German state of Lower Saxony . Its 535,932 (2021) population makes it the 13th-largest city in Germany as well as the fourth-largest city in northern Germany after Berlin , Hamburg and Bremen . Hanover's urban area comprises

1344-469: Is placed on film, video, contemporary music and architecture, room installments and presentations of contemporary paintings, sculptures and video art. The Kestner-Museum is located in the House of 5,000 windows . The museum is named after August Kestner and exhibits 6,000 years of applied art in four areas: Ancient cultures, ancient Egypt, applied art and a valuable collection of historic coins. The KUBUS

1428-1273: The Anzeiger Tower Block , the Administration Building of the NORD/LB , the Cupola Hall of the Congress Centre, the Lower Saxony Stock , the Ministry of Finance , the Garten Church , the Luther Church , the Gehry Tower (designed by the American architect Frank O. Gehry ), the specially designed Bus Stops , the Opera House , the Hanover Central Station , the Maschsee lake and

1512-607: The British Army , supported by troops from Prussia, Hesse-Kassel and the Principality of Brunswick-Wolfenbüttel , again expelled the occupants. Hanover remained unaffected for the rest of the war. After the war ended, peace prevailed until the French Revolutionary Wars started. The War of the First Coalition against France (1792–1797) with Great Britain, Hanover and other war allies forming

1596-708: The Brunswick-Lüneburg principality of Calenberg , moved his residence to Hanover. The Dukes of Brunswick-Lüneburg were elevated by the Holy Roman Emperor to the rank of Prince-Elector in 1692, which was confirmed by the Imperial Diet in 1708. Thus, the principality was upgraded to the Electorate of Brunswick-Lüneburg , colloquially known as the Electorate of Hanover after Calenberg's capital (see also House of Hanover ). Its electors later became monarchs of Great Britain (and from 1801 of

1680-607: The Continental System , the French Empire annexed in late 1810 all of the continental North Sea coast (as far as Denmark) and the areas along the sections of the rivers navigable for seagoing vessels, including Bremen-Verden and Saxe-Lauenburg and some adjacent territories of Hanover proper. The government of George III did not recognise the French annexation, however, and was at war continuously with France for

1764-725: The Expo 2000 , is the largest in the world. Hanover hosts annual commercial trade fairs such as the Hanover Fair and up to 2018 the CeBIT . The IAA Commercial Vehicles show takes place every two years. It is the world's leading trade show for transport, logistics and mobility. Every year Hanover hosts the Schützenfest Hanover , the world's largest marksmen's festival, and the Oktoberfest Hanover . The name of

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1848-694: The French Empire , since 1804 France's new government, ceded Hanover, which it no longer held, to Prussia, which captured it in early 1806. On 6 August 1806, the Holy Roman Empire was dissolved, thereby abolishing the function of prince-electors electing its emperors. After Prussia had turned against France in the War of the Fourth Coalition , it was defeated in the Battle of Jena-Auerstedt (11 November 1806), and France recaptured Hanover. Following

1932-535: The French invaded Hanover and defeated George II's son Prince William, Duke of Cumberland , leading the Anglo-Hanoverian army , at the Battle of Hastenbeck and drove him and his army into remote Bremen-Verden, where in the former Zeven Convent  [ de ] he capitulated on 18 September ( Convention of Kloster-Zeven ). George II did not recognise the convention, however. The following year,

2016-796: The German Chancery , situated in St James's Palace in London. During the French and Indian War (1754–1763) in the North American colonies, Britain feared a French invasion of Hanover. George II formed an alliance with his Prussian cousin Frederick II combining the North American conflict with the Brandenburg-Prusso–Austrian Third Silesian, or Seven Years' War (1756–1763). In the summer of 1757,

2100-614: The Grynszpan family . However, Poland refused to accept them, leaving them stranded at the border with thousands of other Polish-Jewish deportees, fed only intermittently by the Polish Red Cross and Jewish welfare organisations. The Grynszpans' son Herschel Grynszpan was in Paris at the time. When he learned of what was happening, he drove to the German embassy in Paris and shot the German diplomat Eduard Ernst vom Rath , who died shortly afterwards. The Nazis took this act as

2184-688: The Horse Tower . The 36 most significant sights of the city centre are connected by a 4.2-kilometre-long (3 mi) walking trail called the Red Thread that is literally painted onto the pavement with red paint. It starts at the Tourist Information Office and ends on the Ernst-August-Square, both in front of the central train station. There is also a guided sightseeing bus tour through the city. Hanover has

2268-524: The House of Hanover since 1662. After Britain, this time without any allies, had declared war on France (18 May 1803), French troops invaded Hanover on 26 May . According to the Convention of Artlenburg (5 July 1803), confirming the military defeat of Hanover, the Hanoverian Army was disarmed, and its horses and ammunitions were handed over to the French. The Privy Council of Hanover, with

2352-511: The Kingdom of Hanover in 1814, and the personal union with the British crown lasted until 1837. In 1692, Emperor Leopold I of the House of Habsburg elevated Duke Ernest Augustus of the Brunswick-Lüneburg line of Calenberg , to the rank of prince-elector of the empire as a reward for aid given in the Nine Years' War . There were protests against the addition of a new elector, and

2436-699: The North Sea . In 1700, the territories forming the electorate introduced, like all other Protestant territories of imperial immediacy , the Improved Calendar, as the Gregorian calendar was called by Protestants to avoid mentioning the name of Pope Gregory XIII . Sunday, 18 February (Old Style) was thus followed by Monday, 1 March ( New Style ). In 1692, the Holy Roman Emperor, Leopold I, elevated George's son, Duke Ernest Augustus to

2520-683: The Paradies and the Prairie Garden . The Georgengarten is an English landscape garden. The Leibniz Temple and the Georgen Palace are two points of interest there. The landmark of Hanover is the New Town Hall ( Neues Rathaus ). Inside the building are four scale models of the city. An elevator ascends to the observation deck at the top of the large dome along a variable angle of up to 17 degrees, thought to be unique in

2604-812: The Pragmatic Sanction of 1713 , which changed the Habsburgs' inheritance law. It took George II Augustus until 1733 to persuade Charles VI to enfeoff him also with the Duchy of Bremen and the Principality of Verden, colloquially called Duchies of Bremen-Verden. At both enfeoffments, George II Augustus swore that he would respect the existing privileges and constitutions of the estates in Bremen-Verden and in Hadeln, thus confirming 400-year-old traditions of estate participation in government. In Hanover ,

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2688-756: The Principality of Calenberg (1636–1692), the Electorate of Hanover (1692–1814), the Kingdom of Hanover (1814–1866), the Province of Hanover of the Kingdom of Prussia (1868–1918), the Province of Hanover of the Free State of Prussia (1918–1947) and of the State of Hanover (1946). From 1714 to 1837 Hanover was by personal union the family seat of the Hanoverian Kings of the United Kingdom of Great Britain and Ireland , under their title of

2772-432: The Treaty of Tilsit in 1807, the new Kingdom of Westphalia was founded, ruled by Napoléon's brother Jérôme Bonaparte , then including territories of the former Electorate of Hesse-Kassel , the ducal Brunswick-Lüneburgian principality of Brunswick-Wolfenbüttel and formerly Prussian territories. In early 1810 Hanover proper and Bremen-Verden but not Saxe-Lauenburg were also annexed by Westphalia. In an attempt to assert

2856-406: The United Kingdom of Great Britain and Ireland ). The first of them was George I Louis , who acceded to the British throne in 1714. The last British monarch who reigned in Hanover was William IV . Semi-Salic law , which required succession by the male line if possible, forbade the accession of Queen Victoria in Hanover. As a male-line descendant of George I, Queen Victoria was herself a member of

2940-412: The German spelling on their English webpages. The English pronunciation, with stress on the first syllable, is applied to both the German and English spellings, which is different from German pronunciation, with stress on the second syllable and a long second vowel. The traditional English spelling is still used in historical contexts, especially when referring to the British House of Hanover . Hanover

3024-553: The Hanoverian Army. Thereafter the city of Hanover became the capital of the Prussian Province of Hanover . In 1872, the first horse railway was inaugurated, and in 1893, an electric tram was installed. A local newspaper, the Hanoverscher Kurier , was published in Hanover at this time. After 1937 the lord mayor and the state commissioners of Hanover were members of the NSDAP (Nazi party). A large Jewish population then existed in Hanover. In October 1938, 484 Hanoverian Jews of Polish origin were expelled to Poland, including

3108-426: The House of Hanover. Her descendants, however, bore her husband's titular name of Saxe-Coburg-Gotha . Three kings of Great Britain, or the United Kingdom, were concurrently also Electoral Princes of Hanover. During the time of the personal union of the crowns of the United Kingdom and Hanover (1714–1837), the monarchs rarely visited the city. In fact during the reigns of the last three joint rulers (1760–1837), there

3192-404: The Lutheran Landeskirche Hanovers ), and the 15th century Old Town Hall , heavily damaged by Allied bombing in 1943, and reconstructed after World War II. Nearby are the Leibniz House , the Nolte House , and the Beguine Tower . The Kreuz-Church-Quarter around the Kreuz Church contains many little lanes. Nearby is the old royal sports hall, now called the Ballhof theatre. On the edge of

3276-403: The Napoleonic Wars against the French. French control lasted until November 1813, when the territory was overrun by Allied troops after the Battle of Leipzig spelled the definitive end to the Napoleonic client state of Westphalia, as well as the entire Confederation of the Rhine , and the rule of the House of Hanover was restored. The former electorate became the Kingdom of Hanover , which

3360-418: The Old Town are the Market Hall , the Leine Palace , and the ruin of the Aegidien Church which is now a monument to the victims of war and violence. Through the Marstall Gate the bank of the river Leine can be reached; the Nanas of Niki de Saint Phalle are there. They are part of the Sculpture Mile , which starts at Trammplatz , runs along the river bank, crosses Königsworther Square , and ends at

3444-458: The Prince of Calenberg to the College of Electors , creating the new Electorate of Brunswick-Lüneburg. The fortunes of the electorate were tied to those of Great Britain by the Act of Settlement 1701 and Act of Union 1707 , which settled the succession to the British throne on Queen Anne's nearest Protestant relative, the Electress Sophia of Hanover , and her descendants. The prince-elector of Hanover became king of Great Britain in 1714. As

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3528-439: The armed neutrality. During the War of the Second Coalition against France (1799–1802), Napoléon Bonaparte urged Prussia to occupy the continental British dominions. In 1801, there was an invasion of 24,000 Prussian soldiers that surprised Hanover, which surrendered without a fight. In April they arrived at Bremen-Verden's capital, Stade , and stayed there until October. The British first ignored Prussian hostility, but when

3612-402: The capital of the electorate, the Privy Council of Hanover (electoral government) installed a new ministry in charge of the Imperial Estates ruled by the electors in personal union. It was called the Department of Bremen-Verden, Hadeln, Lauenburg and Bentheim . Nonetheless, the electors spent most of their time in England. Direct contact with the electorate was maintained through the office of

3696-414: The city alongside the mayor. The most recent city council election was held on 12 September 2021, and the results were as follows: There are around 5,500 buildings of major historic value within city limits. One of Hanover's most grandiose sights is the Royal Gardens of Herrenhausen . Its Great Garden is an important European Baroque garden . The palace itself was largely destroyed by Allied bombing, but

3780-414: The city forest Eilenriede , which is one of the largest of its kind in Europe. For recreation, Hanover has 40 parks, forests and gardens, a couple of lakes, two rivers and a canal. The historic Leibniz Letters , which can be viewed in the Gottfried Wilhelm Leibniz Library , have been on UNESCO 's Memory of the World Register since 2007. Outside the city centre is the Hanover Fairground , which

3864-400: The city may derive from the German (am) hohen Ufer , literally 'on the high (river) bank'. Traditionally, the English spelling is ⟨ Hanover ⟩ . However, ⟨ Hannover ⟩ , the German spelling with a double- ⟨n⟩ , has become more popular in English. Recent editions of Encyclopædia Britannica prefer the German spelling, and the local government uses

3948-414: The city on 10 April 1945. Hanover was in the British zone of occupation of Germany and became part of the new state (Land) of Lower Saxony in 1946. In 1947, Hanover established its relationship with Bristol, England in exchanges of goods, students and music. This would link the two cities to Sister Cities International as one of the models for establishing these types of programs. Today Hanover

4032-498: The city, in Langenhagen , and is Germany's ninth-busiest airport. The city's most notable institutes of higher education are the Hanover Medical School ( Medizinische Hochschule Hannover ), one of Germany's leading medical schools , with its university hospital Klinikum der Medizinischen Hochschule Hannover , and the Leibniz University Hanover . The city is also home to International Neuroscience Institute . The Hanover Fairground , owing to numerous extensions, especially for

4116-463: The coalition, did not affect Hanoverian territory since the first French Republic was fighting on several fronts, even on its own territory. Men were drafted to recruit the 16,000 Hanoverian soldiers fighting in the Low Countries under British command against France. In 1795, the Holy Roman Empire declared its neutrality, including Hanover, but a peace treaty with France was being negotiated until it failed in 1799. Prussia, however, ended for its part

4200-399: The ducal family, the change needed imperial confirmation, which Emperor Leopold I granted in 1692. In 1692, at its upgrading to the rank of electorate, its territory comprised the Brunswick-Lüneburgian principalities of Calenberg and Grubenhagen , which the line of the former had already inherited in 1665. Before the confirmation of the electorate by the Imperial Diet in 1708, however,

4284-495: The dukes of Brunswick-Lüneburg (later described as the Elector of Hanover ). The city lies at the confluence of the River Leine and its tributary the Ihme , in the south of the North German Plain . The city is a major crossing point of railway lines and motorways ( Autobahnen ), connecting European main lines in both the east–west ( Berlin – Ruhr area / Düsseldorf / Cologne ) and north–south (Hamburg– Frankfurt / Stuttgart / Munich ) directions. Hanover Airport lies north of

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4368-418: The electorate was ruled in personal union with Great Britain and Ireland following the Hanoverian Succession . The Duchy of Brunswick-Lüneburg had been split in 1269 between different branches of the House of Welf . The Principality of Calenberg , ruled by a cadet branch of the family, emerged as the largest and most powerful of the Brunswick-Lüneburg states. In 1692, the Holy Roman Emperor elevated

4452-520: The elevation did not become official until the approval of the Imperial Diet in 1708. Calenberg's capital, Hanover , became colloquially eponymous for the electorate, but it officially used the name Chur-Braunschweig-Lüneburg of the entire ducal dynasty. The electoral coat of arms and flag (see info box upper right of this article) displayed the Saxon Steed (German: Sachsenross, Niedersachsenross, Welfenross, Westfalenpferd ; Dutch : Twentse Ros / Saksische ros/paard ; Low Saxon : Witte Peerd )

4536-423: The entire period, and Hanoverian ministers continued to operate out of London . The Privy Council of Hanover maintained its own separate diplomatic service, which maintained links with countries such as Austria and Prussia. The Hanoverian Army was dissolved, but many of the officers and soldiers went to England, where they formed the King's German Legion . That was the only German army to fight continually throughout

4620-416: The entrance of the Georgengarten . Near the Old Town is the district of Calenberger Neustadt where the Catholic St. Clement's Basilica , the Reformed Church and the Lutheran Neustädter Hof- und Stadtkirche St. Johannis stand. Some other popular sights are the Waterloo Column , the Laves House , the Wangenheim Palace , the Lower Saxony State Archives , the Hanover Playhouse , the Kröpcke Clock ,

4704-404: The fairground are the Hermes Tower (88.8 metres or 291 feet high) and the EXPO Roof , the largest wooden roof in the world. In the district of Anderten is the European Cheese Centre , termed a "Cheese Experience Centre." Another tourist sight in Anderten is the Hindenburg Lock , which was the biggest lock in Europe when it was constructed in 1928. The Tiergarten in the district of Kirchrode

4788-425: The following extreme values: The city of Hanover is divided into 13 boroughs ( Stadtbezirke ) and 53 quarters ( Stadtteile ). A selection of the 53 quarters: The current mayor of Hanover is Belit Onay of Alliance 90/The Greens , elected in 2019. The most recent mayoral election was held on 17 October 2019, with a runoff held on 10 November, and the results were as follows: The Hanover city council governs

4872-422: The following year. After Napoleon imposed the Convention of Artlenburg (treaty of the Elbe) on 5 July 1803, about 35,000 French soldiers occupied Hanover. The convention also required disbanding the Hanoverian Army . However, George III did not recognise the Convention of the Elbe, which resulted in a great number of soldiers from Hanover eventually emigrating to Great Britain, where the King's German Legion

4956-406: The history of Hanover, from the medieval settlement "Honovere" to the city of today. The museum focuses on the period from 1714 to 1834 when Hanover had a strong relationship with the British royal family of that period. With more than 4,000 members, the Kestnergesellschaft is the largest art society in Germany. The museum hosts exhibitions from classical modernist art to contemporary art. Emphasis

5040-468: The largest Vietnamese communities in former West Germany due to its close distance to former East Germany . The Viên Giác pagoda in Mittelfeld, southern district of Hanover is the largest Vietnamese pagoda in Germany and one of the largest in Europe. Hanover is one of the liveable cities due to its good location and good population size. It is the fifth-largest city in the Low German dialect area after Hamburg, Dortmund , Essen and Bremen. Hanover

5124-432: The latter joined the pro-French coalition of armed neutral powers, including Denmark-Norway and Russia , Britain began to capture Prussian ships. After the Battle of Copenhagen (1801) , the coalition fell apart and Prussia withdrew its troops. As part of the German Mediatisation of 25 February 1803, the electorate received the Prince-Bishopric of Osnabrück in real union , which had been ruled by every second ruler of

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5208-487: The minister Friedrich Franz Dieterich von Bremer holding up the Hanoverian stake, fled to Saxe-Lauenburg , across the Elbe , which was ruled by Britain and Hanover in personal union. Soon, the French also occupied Saxe-Lauenburg. In the autumn of 1805, at the beginning of the War of the Third Coalition against France (1805), the French occupying troops left Hanover in a campaign against Austria . British, Swedish and Russian coalition forces captured Hanover . In December,

5292-414: The most varied collection of orchids in Europe. Some points of interest are the Tropical House , the Cactus House , the Canary House and the Orchid House , and free-flying birds and butterflies. Near the entrance to the Berggarten is the historic Library Pavillon . The Mausoleum of the Guelphs is also in the Berggarten. Like the Great Garden, the Berggarten also consists of several parts, for example

5376-612: The production of sparks more than 30 centimetres long. Ruhmkorff patented the first version of his induction coil in 1851, and its success was such that in 1858 he becomes the first recipient of the Volta Prize , 50,000 French franc award by Napoleon III for one of the most important discoveries in the application of electricity. He died in Paris in 1877. The Ruhmkorff lamps or 'Ruhmkorff's apparatus' mentioned in several of Jules Verne 's science-fiction novels relied on induction coils but were not developed by Ruhmkorff. The asteroid 15273 Ruhmkorff , discovered in 1991 by E. W. Elst ,

5460-411: The rank of elector of the empire as a reward for aid given in the War of the Grand Alliance. There were protests against the addition of a new elector, and the elevation did not become official (with the approval of the Imperial Diet) until 1708, in the person of Ernest Augustus's son, George Louis. Though the elector's titles were properly duke of Brunswick-Lüneburg and elector of the Holy Roman Empire, he

5544-478: The southwest and the plains regions to the east and north for overland traffic skirting the Harz between the Low Countries and Saxony or Thuringia . In the 14th century, the main churches of Hanover were built, as well as a city wall with three city gates. The beginning of industrialization in Germany led to trade in iron and silver from the northern Harz Mountains , which increased the city's importance. In 1636 George, Duke of Brunswick-Lüneburg , ruler of

5628-543: The tank factory M.N.H. Maschinenfabrik Niedersachsen (Badenstedt). Residential areas were also targeted, and more than 6,000 civilians were killed by the Allied bombing raids. More than 90% of the city centre was destroyed in a total of 88 bombing raids. After the war, the Aegidienkirche was not rebuilt and its ruins were left as a war memorial. Today around 25 % of the city consists of buildings from before 1950. The Allied ground advance into Germany reached Hanover in April 1945. The US 84th Infantry Division captured

5712-422: The territory of the former County of Hoya . In 1705, Elector George I Louis inherited the Principality of Lüneburg with the Duchy of Saxe-Lauenburg upon the death of his uncle Duke George William of Brunswick-Lüneburg . In 1715, he purchased the duchies of Bremen-Verden from King Frederick IV of Denmark (confirmed by the 1719 Treaty of Stockholm ), whereby his former landlocked electorate gained access to

5796-442: The time Lüneburg was ruled by Ernest Augustus's older brother) and the counties of Diepholz and Hoya. In 1714, George Louis became king of Great Britain and Ireland and so the electorate and Great Britain and Ireland were ruled in personal union . The possessions of the electors in Germany also grew, as they de facto purchased the formerly Swedish -held duchies of Bremen and Verden in 1719. George Louis died in 1727 and

5880-410: The towns of Garbsen , Langenhagen and Laatzen and has a population of about 791,000 (2018). The Hanover Region has approximately 1.16 million inhabitants (2019) and is the largest in the Hanover–Braunschweig–Göttingen–Wolfsburg Metropolitan Region , the 17th biggest metropolitan area by GDP in the European Union . Before it became the capital of Lower Saxony in 1946, Hanover was the capital of

5964-449: The upper navigable reaches of the river helped it grow from increasing trade. It was connected to the Hanseatic League city of Bremen by the Leine River and was situated near the southern edge of the wide North German Plain and northwest of the Harz mountains, so east–west traffic such as mule trains passed through it. Hanover was thus a gateway to the Rhine , Ruhr and Saar river valleys, and their industrial areas which grew up to

6048-530: The war seven concentration camps were constructed in Hanover, in which many Jews were confined, but also Polish , French and Russian women. Of the approximately 4,800 Jews who had lived in Hanover in 1938, fewer than 100 were still in the city when troops of the United States Army arrived on 10 April 1945 to occupy Hanover at the end of the war. Today, a memorial at the Opera Square is

6132-581: The war with France by the Treaty of Basel (1795), which stipulated that Prussia would ensure the Holy Roman Empire's neutrality in all of the latter's territories north of the demarcation line of the River Main , including the British continental dominions of Hanover, Bremen-Verden, and Saxe-Lauenburg. To that end, Hanover also had to provide troops for the so-called demarcation army maintaining

6216-471: The world. The Hanover Zoo received the Park Scout Award for the fourth year running in 2009–10, placing it among the best zoos in Germany. The zoo consists of several theme areas: Sambesi, Meyers Farm, Gorilla-Mountain, Jungle-Palace, and Mullewapp. Some smaller areas are Australia, the wooded area for wolves, and the so-called swimming area with many seabirds. There is also a tropical house,

6300-587: The world. It provides 496,000 square metres (5.34 million square feet) of covered indoor space, 58,000 square metres (620 thousand square feet) of open-air space, 27 halls and pavilions. Many of the Exhibition Centre's halls are architectural highlights. Furthermore, it offers the Convention Center with its 35 function rooms, glassed-in areas between halls, grassy park-like recreation zones and its own heliport. Two important sights on

6384-863: Was a major target for strategic bombing during World War II , including the Oil Campaign . Targets included the AFA ( Stöcken ), the Deurag-Nerag refinery ( Misburg ), the Continental plants ( Vahrenwald and Limmer ), the United light metal works (VLW) in Ricklingen and Laatzen (today Hanover fairground ), the Hanover/Limmer rubber reclamation plant , the Hanomag factory ( Linden ) and

6468-459: Was confirmed at the Congress of Vienna in 1814. The electorate was legally indivisible: it could add to its territory, but not alienate territory or be split up among several heirs, as had been the rule before, which led at times to a multitude of Brunswick-Lüneburgian principalities. Its succession was to follow male primogeniture . Since that was against Salic law , which was then valid for

6552-590: Was female ( Queen Victoria ). Hanover could be inherited only by male heirs. Thus, Hanover passed to William IV's brother, Ernest Augustus , and remained a kingdom until 1866, when it was annexed by the Prussia during the Austro-Prussian war . Though Hanover was expected to defeat Prussia at the Battle of Langensalza in 1866, Prussia employed Moltke the Elder's Kesselschlacht order of battle to and destroyed

6636-534: Was formed. It was only troops from Hanover and Brunswick who consistently opposed France throughout the Napoleonic Wars. The Legion later played an important role in the Peninsular War and the Battle of Waterloo in 1815. In 1814 the electorate became the Kingdom of Hanover . In 1837, the personal union of the United Kingdom and Hanover ended because William IV 's heir in the United Kingdom

6720-468: Was founded in medieval times on the east bank of the Leine River. Its original name Honovere may mean 'high river bank', but that is debated. Hanover was a small village of ferrymen and fishermen that became a comparatively large town in the 13th century and received town privileges in 1241 because of its position at a natural crossroads. As overland travel was relatively difficult, its position on

6804-552: Was only one short visit, by George IV in 1821. From 1816 to 1837, Viceroy Adolphus represented the monarch in Hanover. During the Seven Years' War , the Battle of Hastenbeck was fought near the city on 26 July 1757. The French army defeated the Hanoverian Army of Observation , which led to the city's occupation as part of the Invasion of Hanover . It was recaptured by Anglo-German forces, led by Ferdinand of Brunswick ,

6888-529: Was reconstructed and reopened in 2013. Among its points of interest is the Grotto, with the interior designed by French artist Niki de Saint Phalle . The Great Garden consists of several parts and features Europe's tallest garden fountain. The historic Garden Theatre has hosted the musicals of the German rock musician Heinz Rudolf Kunze . Also at Herrenhausen, the Berggarten is a botanical garden with

6972-410: Was succeeded by his son George II Augustus . In 1728, Emperor Charles VI officially enfeoffed George II (gave him land in exchange for a pledge of service), with the reverted fief of Saxe-Lauenburg , which had de facto been ruled in personal union with Hanover and with one of its preceding Principality of Lüneburg since 1689. In 1731, Hanover also gained Hadeln . In return, Hanover recognised

7056-805: Was the site of EXPO 2000 fair. Some points of interest are the Planet M. , the former German Pavillon , some nations' vacant pavilions, the Expowale , the EXPO-Plaza and the EXPO-Gardens (Parc Agricole, EXPO-Park South and the Gardens of change). The fairground can be reached by the Exponale , one of the largest pedestrian bridges in Europe. The Hanover Fairground is the largest exhibition centre in

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