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Ernst Mach

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76-638: Ernst Waldfried Josef Wenzel Mach ( / m ɑː x / MAHKH ; German: [ɛʁnst ˈmax] ; 18 February 1838 – 19 February 1916) was an Austrian physicist and philosopher , who contributed to the physics of shock waves . The ratio of the speed of a flow or object to that of sound is named the Mach number in his honour. As a philosopher of science , he was a major influence on logical positivism and American pragmatism . Through his criticism of Isaac Newton 's theories of space and time, he foreshadowed Albert Einstein 's theory of relativity . Mach

152-527: A gymnasium in Kroměříž ( German : Kremsier ), where he studied for three years. In 1855 he became a student at the University of Vienna , where he studied physics and for one semester medical physiology, receiving his doctorate in physics in 1860 under Andreas von Ettingshausen with the thesis Über elektrische Ladungen und Induktion , and his habilitation the following year. His early work focused on

228-404: A non-acoustic function of the inner ear that helps control human balance. One of the best-known of Mach's ideas is the so-called Mach principle , the physical origin of inertia. This was never written down by Mach, but was given a graphic verbal form, attributed by Philipp Frank to Mach: "When the subway jerks, it's the fixed stars that throw you down." In 1900 Mach became the godfather of

304-473: A House of Deputies ( Abgeordnetenhaus ). But most nationalities of the monarchy remained dissatisfied. After the second war with Denmark in 1864, Holstein came under Austrian administration, and Schleswig and Lauenburg under Prussian administration. But the internal difficulties continued. Diets replaced the parliament in 17 provinces, the Hungarians pressed for autonomy, and Venetia was attracted by

380-550: A decisive part in the overthrow of Napoleon in the campaigns of 1813–14. It participated in a second invasion of France in 1815, and put an end to Murat's regime in south Italy. The latter period of Napoleonic Wars featured Metternich exerting a large degree of influence over foreign policy in the Austrian Empire, a matter nominally decided by the Emperor. Metternich initially supported an alliance with France, arranging

456-492: A direct influence on the Vienna Circle philosophers and logical positivism in general. Several principles are attributed to Mach that distill his ideal of physical theorization, called "Machian physics": The last is singled out, particularly by Einstein, as "the" Mach's principle . Einstein cited it as one of the three principles underlying general relativity . In 1930, he wrote, "it is justified to consider Mach as

532-406: A fluid in the semicircular canals of the inner ear . That the sense of balance depends on the three semicircular canals was discovered in 1870 by the physiologist Friedrich Goltz , but Goltz did not discover how the balance-sensing apparatus functions. Mach devised a swivel chair to test his theories, and Floyd Ratliff has suggested that this experiment may have paved the way to Mach's critique of

608-614: A paralytic stroke, and in 1901, he retired from the University of Vienna and was appointed to the upper chamber of the Austrian Parliament. On leaving Vienna in 1913, he moved to his son's home in Vaterstetten , near Munich , where he continued writing and corresponding until his death in 1916, one day after his 78th birthday. Born to a liberal family, Mach lamented that a "very reactionary-clerical" period followed

684-402: A philosophical work, Materialism and Empirio-criticism , in which he criticized Machism and the views of " Russian Machists ". His main criticisms were that Mach's philosophy led to solipsism and to the absurd conclusion that nature did not exist before humans: If bodies are "complexes of sensations," as Mach says, or "combinations of sensations," as Berkeley said, it inevitably follows that

760-621: A physical conception of absolute space and motion. In the area of sensory perception, psychologists remember Mach for the optical illusion called Mach bands . The effect exaggerates the contrast between edges of the slightly differing shades of gray as soon as they separate, by triggering edge-detection in the human visual system. More clearly than anyone before or since, Mach made the distinction between what he called physiological (specifically visual ) and geometrical spaces. Mach's views on mediating structures inspired B. F. Skinner 's strongly inductive position, which paralleled Mach's in

836-584: A stable economy and reached an almost balanced budget, despite having a major deficit following the Napoleonic Wars. From March 1848 through November 1849, the Empire was threatened by revolutionary movements, most of which were of a nationalist character. Besides that, liberal and even socialist currents resisted the empire's longstanding conservatism. Although most of the revolution plans failed, some changes were made; significant lasting reforms included

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912-511: A system which delegated the responsibilities of the Kreise among subordinate Amtsbezirke  [ de ] ('office districts'), a system which persisted until 1867. In the course of the post-1848 reforms Transylvania was also divided into Kreise in 1851 (re-divided in 1854 ); the Voivodeship of Serbia and Banat of Temeschwar was also divided into Kreise . German was

988-567: A very bad reputation among Czechs and subsequently led to the strengthening of the Czech national movement . However, Bach's relaxed ideological views (apart from the neo-absolutism) led to a great rise in the 1850s of economic freedom . Internal customs duties were abolished, and peasants were emancipated from their feudal obligations. In her capacity as leader of the German Confederation, Austria participated with volunteers in

1064-496: A whole. Further, Metternich opposed the weakening of France in the years after Napoleon, and viewed the new monarchy in Paris as an effective tool in keeping Russia at bay. From 1815 to 1848, Metternich steered Austria Imperial foreign policy, and indeed the mood of Europe, and managed to keep peace on the continent despite the growing liberal and radical movements inside most major powers. His resignation in 1848, forced by moderates in

1140-550: Is also referred to as the " Age of Metternich ". During this period, Metternich controlled the Habsburg monarchy 's foreign policy. He also had a major influence in European politics. He was known for his strong conservative views and approach in politics. Metternich's policies were strongly against revolution and liberalism. In his opinion, liberalism was a form of legalized revolution. Metternich believed that absolute monarchy

1216-472: Is constructed rather than received by the learner. He took an exceptionally non-dualist, phenomenological position. The founder of radical constructivism, Ernst von Glasersfeld , gave a nod to Mach as an ally. On the other hand, there is also a reasonable case for viewing Mach simply as an empiricist and a precursor of the logical empiricists and the Vienna Circle. On this view, the purpose of science

1292-417: Is our sensations and that knowledge should be confined to pure experience. In accordance with empirio-critical philosophy, Mach opposed Boltzmann and others who proposed an atomic theory of physics. Since one cannot observe things as small as atoms directly, and since no atomic model at the time was consistent, the atomic hypothesis seemed unwarranted to Mach, and perhaps not sufficiently "economical". Mach had

1368-412: Is to detail functional relationships between observations: "The goal which it (physical science) has set itself is the simplest and most economical abstract expression of facts." Friedrich Hayek wrote that, when he attended the University of Vienna from 1918 to 1921, "as far as philosophical discussion went it essentially revolved around Mach's ideas". Mach's work has also been cited as an influence on

1444-539: The 1848 revolutions , prompting him to plan to emigrate to America. In 1901, Mach accepted an appointment to the Austrian House of Lords but declined a nobility because he thought it inappropriate for a scientist to accept such a thing. He was on good personal terms with the Social Democrat politician Viktor Adler and left money in his will to the Social Democrat newspaper Arbeiter-Zeitung . Mach

1520-649: The Charles-Ferdinand University , where he stayed for 28 years before returning to Vienna. In 1871 he was elected a member of the Royal Bohemian Society of Sciences . Mach's main contribution to physics involved his description and photographs of spark shock-waves and then ballistic shock-waves. He described how when a bullet or shell moved faster than the speed of sound, it created a compression of air in front of it. Using schlieren photography , he and his son Ludwig photographed

1596-654: The Confederation of the Rhine was established, comprising 16 sovereigns and countries. This confederation, under French influence, de facto put an end to the Holy Roman Empire. On 6 August 1806, Francis proclaimed the dissolution of the Holy Roman Empire, as he did not want Napoleon to succeed him. The dissolution of the Holy Roman Empire was not recognized by George III of the United Kingdom who

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1672-483: The Doppler effect in optics and acoustics . In 1864, he took a job as professor of mathematics at the University of Graz after he had turned down the position of a chair in surgery at the University of Salzburg to do so, and in 1866 he was appointed professor of physics. During that period, Mach continued his work in psycho-physics and in sensory perception. In 1867, he took the chair of experimental physics at

1748-524: The First War of Schleswig (1848–1850). Sardinia allied itself with France for the conquest of Lombardy–Venetia . Austria was defeated in the 1859 armed conflict. The Treaties of Villafranca and Zürich removed Lombardy, except for the part east of the Mincio river, the so-called Mantovano . The Constitution of 1861 , also known as "February Patent", created a House of Lords ( Herrenhaus ) and

1824-678: The Napoleonic Wars , except for a period between 1809 and 1813, when Austria was first allied with Napoleon during the invasion of Russia and later neutral during the first few weeks of the Sixth Coalition War . Austria and its allies emerged victorious in the war, leading to the Congress of Vienna , which reaffirmed the empire as one of the great powers of the 19th century. The Kingdom of Hungary —as Regnum Independens—was administered by its own institutions separately from

1900-849: The United Kingdom , while geographically, it was the third-largest empire in Europe after the Russian Empire and the First French Empire . The empire was proclaimed by Francis II in 1804 in response to Napoleon 's declaration of the First French Empire, unifying all Habsburg possessions under one central government. It remained part of the Holy Roman Empire until the latter's dissolution in 1806. It continued fighting against Napoleon throughout

1976-409: The Vienna Circle , being described as a "major precursor of logical positivism". Mach's work was a "forerunner" of Gestalt psychology . In 1873, independently of each other, Mach and the physiologist and physician Josef Breuer discovered how the sense of balance (i.e., the perception of the head's imbalance) functions, tracing its management by information the brain receives from the movement of

2052-531: The first Minister-President of the Austrian Empire. The liberal Revolutions of 1848 in the Austrian Empire forced Metternich's resignation. Metternich is remembered for his success in maintaining the status quo and the Habsburg influence in international affairs. No Habsburg foreign minister following Metternich held a similar position within the empire for such a long time nor held such a vast influence on European foreign affairs. Historians generally consider

2128-569: The "royal" part referred to the Apostolic Kingdom of Hungary. However, during World War I Austria-Hungary issued military stamps for use in occupied regions, with the text "K.u.K. Feldpost" or K.u.K. Militärpost. The Napoleonic Wars dominated Austrian foreign policy from 1804 to 1815. The Austrian army was one of the most formidable forces the French had to face. After Prussia signed a peace treaty with France on 5 April 1795, Austria

2204-614: The 1815 Congress of Vienna , including the local government reorganizations from the Revolutions of 1848 to the 1860 October Diploma : The old Habsburg possessions of Further Austria (in today's France, Germany and Switzerland) had already been lost in the 1805 Peace of Pressburg. From 1850, Croatia , Slavonia , and the Military Frontier constituted a single land with disaggregated provincial and military administration, and representation. Administratively, most of

2280-518: The Anglo-French coalition. Having abandoned its alliance with Russia, Austria was diplomatically isolated following the war, which contributed to Russia's non-intervention in the 1859 Franco-Austrian War , which meant the end of Austrian influence in Italy; and in the 1866 Austro-Prussian War , with the loss of its influence in most German-speaking land. Crown lands of the Austrian Empire after

2356-528: The Austrian Army to preparedness for another war. Johann Philipp von Stadion, the foreign minister, personally hated Napoleon due to an experience of confiscation of his possessions in France by Napoleon. In addition, the third wife of Francis I, Maria Ludovika of Austria-Este , agreed with Stadion's efforts to begin a new war. Klemens Wenzel von Metternich , located in Paris, called for careful advance in

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2432-459: The Austrian Empire was legally a single state, although the overarching structure and the status of its component lands at first stayed much the same as they had been under the composite monarchy. This was especially demonstrated by the status of the Kingdom of Hungary , a country that had never been a part of the Holy Roman Empire and which had always been considered a separate realm – a status that

2508-584: The Austrian Empire with other European powers whose monarchs had a similar interest in preserving conservative political direction, Metternich was able to establish the Austrian Empire's influence on European politics. Also, because Metternich used the fear of revolutions among European powers, which he also shared, he was able to establish security and predominance of the Habsburgs in Europe. Under Metternich, nationalist revolts in Austrian north Italy and in

2584-549: The Austrian foreign minister, other congresses would meet to resolve European foreign affairs. These included the Congresses of Aix-la-Chapelle (1818), Carlsbad (1819), Troppau (1820), Laibach (1821), and Verona (1822). The Metternich congresses aimed to maintain the political equilibrium among the European powers and prevent revolutionary efforts. These meetings also aimed to resolve foreign issues and disputes without resorting to violence. By means of these meetings and by allying

2660-465: The Congress of Vienna in 1815, Austria was the leading member of the German Confederation. Following the Congress, the major European powers agreed to meet and discuss resolutions in the event of future disputes or revolutions. Because of Metternich's main role in the architecture of the Congress, these meetings are also referred to as the "Metternich congress" or "Metternich system". Under Metternich as

2736-610: The Empire in September 1805. On 20 October 1805, an Austrian army led by General Karl Mack von Leiberich was defeated by French armies near the city of Ulm . The French victory resulted in the capture of 20,000 Austrian soldiers and many cannons. Napoleon's army won another victory at Austerlitz on 2 December 1805. Francis was forced into negotiations with the French from 4 to 6 December 1805, which concluded with an armistice on 6 December 1805. The French victories encouraged rulers of certain imperial territories to ally themselves with

2812-462: The French and assert their formal independence from the Empire. On 10 December 1805, Maximilian IV Joseph , the prince-elector and Duke of Bavaria , proclaimed himself king, followed by the Duke of Württemberg Frederick III on 11 December. Charles Frederick , Margrave of Baden , was given the title of Grand Duke on 12 December. Each of these new states became French allies. Francis II agreed to

2888-599: The German states were forcibly crushed. At home, he pursued a similar policy to suppress revolutionary and liberal ideals. He employed the Carlsbad Decrees of 1819, which used strict censorship of education, press and speech to repress revolutionary and liberal concepts. Metternich also used a wide-ranging spy network to dampen down unrest. Metternich operated very freely with regard to foreign policy under Emperor Francis I's reign. Francis died in 1835. This date marks

2964-488: The Metternich era as a period of stability : the Austrian Empire fought no wars nor did it undergo any radical internal reforms. However, it was also thought of as a period of economic growth and prosperity in the Austrian Empire. The population of Austria rose to 37.5 million by 1843. Urban expansion also occurred and the population of Vienna reached 400,000. During the Metternich era, the Austrian Empire also maintained

3040-646: The Russian Empire in November 1804. This convention was to assure mutual cooperation in the case of a new war against France. Austrian unwillingness to join the Third Coalition was overcome by British subsidies, but the Austrians withdrew from the war yet again after a decisive defeat at the Battle of Austerlitz. Although the Austrian budget suffered from wartime expenditures and its international position

3116-654: The abolition of serfdom , cancellation of censorship and a promise made by Ferdinand I of Austria said to implement a constitution throughout the whole Empire. After the death of Prince Felix of Schwarzenberg in 1852, the Minister of the Interior Baron Alexander von Bach largely dictated policy in Austria and Hungary. Bach centralized administrative authority for the Austrian Empire, but he also endorsed reactionary policies that reduced freedom of

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3192-859: The case of the war against France. The defeat of French army at the Battle of Bailén in Spain on 27 July 1808 triggered the war. On 9 April 1809, an Austrian force of 170,000 men attacked Bavaria . Despite military defeats of the Austrian army —especially the Battles of Marengo , Ulm , Austerlitz and Wagram —and consequently lost territory throughout the Revolutionary and Napoleonic Wars (the Treaties of Campo Formio in 1797, Luneville in 1801, Pressburg in 1806, and Schönbrunn in 1809), Austria played

3268-462: The court, and revolutionaries in the streets, may have caused the spread of the revolutions throughout the monarchy. It is stipulated that Metternich's departure emboldened liberal factions in Austria and Hungary, but this cannot be confirmed for certain. During the Crimean War , Austria maintained a policy of hostile neutrality towards Russia , and, while not going to war, was supportive of

3344-505: The crown lands excluding Hungary, Croatia, Slavonia, Transylvania, Lombardy–Venetia and the Military Frontier were divided into Kreise (' circles '), an administrative division introduced under Maria Theresa in the 18th century. Following the revolutions of 1848 a brief attempt was made to introduce modern-style political districts (in addition to the Kreise ), but the reforms of Bach in 1853/54 instead instituted

3420-421: The decline of Metternich's influence in the Austrian Empire. Francis' heir was his son Ferdinand I, but he suffered from health issues. Ferdinand's accession preserved the Habsburg dynastic succession, but he was not capable of ruling. The leadership of the Austrian Empire was transferred to a state council composed of Metternich, Francis I's brother Archduke Louis, and Count Franz Anton Kolowrat , who later became

3496-641: The field of psychology. In homage his name was given to: Mach's principal works in English: Austrian Empire The Austrian Empire , officially known as the Empire of Austria , was a multinational European great power from 1804 to 1867, created by proclamation out of the realms of the Habsburgs . During its existence, it was the third most populous monarchy in Europe after the Russian Empire and

3572-400: The human mind, with its limited powers, attempts to mirror in itself the rich life of the world, of which it itself is only a small part, and which it can never hope to exhaust, it has every reason for proceeding economically. In reality, the law always contains less than the fact itself, because it does not reproduce the fact as a whole but only in that aspect of it which is important for us,

3648-629: The humiliating Treaty of Pressburg , signed in Pressburg (today Bratislava , Slovakia) on 26 December 1805, in which he recognised these new titles and ceded large amounts of territory to Napoleon's German allies and the French Satellite Kingdom of Italy . In practice this meant the dissolution of the long-lived Holy Roman Empire and a reorganization under a Napoleonic model of the German states. Austrian claims on those German states were renounced without exception. On 12 July 1806,

3724-424: The hypothesis known as Mach's principle . From 1895 to 1901, Mach held a newly created chair for "the history and philosophy of the inductive sciences" at the University of Vienna. In his historico-philosophical studies, Mach developed a phenomenalistic philosophy of science that became influential in the 19th and 20th centuries. He originally saw scientific laws as summaries of experimental events, constructed for

3800-515: The marriage between Napoleon and Francis I's daughter, Marie-Louise; however, by the 1812 campaign, he had realised the inevitability of Napoleon's downfall and took Austria to war against France. Metternich's influence at the Congress of Vienna was remarkable, and he became not only the premier statesman in Europe but the virtual ruler of the Empire until 1848—the Year of revolutions —and the rise of liberalism equated to his political downfall. The result

3876-779: The now unified Italy. After the Austrian army was defeated in the Austro-Prussian War of 1866 and the German Confederation was dissolved, the Austro-Hungarian Compromise of 1867 was adopted. By this act, the Kingdom of Hungary and the Empire of Austria as two separate entities joined on an equal basis to form the Dual Monarchy of Austria-Hungary. The frequent abbreviation K.u.K. ( Kaiserliche und Königliche , "Imperial and Royal") does not refer to that dual monarchy but originated in 1745, when

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3952-632: The physicist Wolfgang Ernst Pauli , who was also named after him. Mach was also well known for his philosophy, developed in close interplay with his science. He defended a type of phenomenalism , recognizing only sensations as real. That position seemed incompatible with the view of atoms and molecules as external, mind-independent things. After an 1897 lecture by Ludwig Boltzmann at the Imperial Academy of Science in Vienna , Mach said, "I don't believe that atoms exist!" In 1898, Mach survived

4028-420: The precursor of the general theory of relativity", though Mach, before his death, apparently rejected Einstein's theory. Einstein knew that his theories did not fulfill all Mach's principles, and neither has any subsequent theory, despite considerable effort. According to Alexander Riegler, Mach's work was a precursor to the influential perspective known as constructivism . Constructivism holds that all knowledge

4104-561: The press and abandoned public trials. He later represented the Absolutist (or Klerikalabsolutist ) party, which culminated in the concordat of August 1855 that gave the Roman Catholic Church control over education and family life. This period in the history of the Austrian Empire would become known as the era of neo-absolutism, or Bach's absolutism. The pillars of the so-called Bach system ( Bachsches System ) were, in

4180-423: The purpose of making complex data comprehensible, but later emphasized mathematical functions as a more useful way to describe sensory appearances. Thus, scientific laws, while somewhat idealized, have more to do with describing sensations than with reality as it exists beyond sensations. The goal which it ( physical science ) has set itself is the simplest and most economical abstract expression of facts. When

4256-684: The rest being intentionally or from necessity omitted. In mentally separating a body from the changeable environment in which it moves, what we really do is to extricate a group of sensations on which our thoughts are fastened and which is of relatively greater stability than the others, from the stream of all our sensations. Suppose we were to attribute to nature the property of producing like effects in like circumstances; just these like circumstances we should not know how to find. Nature exists once only. Our schematic mental imitation alone produces like events. Mach's positivism influenced many Russian Marxists , such as Alexander Bogdanov . In 1908, Lenin wrote

4332-570: The rest of the empire. After Austria was defeated in the Austro-Prussian War of 1866, the Austro-Hungarian Compromise of 1867 was adopted, joining the Kingdom of Hungary and the Empire of Austria to form Austria-Hungary . Changes shaping the nature of the Holy Roman Empire took place during conferences in Rastatt (1797–1799) and Regensburg (1801–1803). On 24 March 1803, the Imperial Recess (German: Reichsdeputationshauptschluss )

4408-479: The shadows of the invisible shock waves. During the early 1890s Ludwig invented a modification of the Jamin interferometer that allowed for much clearer photographs. But Mach also made many contributions to psychology and physiology, including his anticipation of gestalt phenomena, his discovery of the oblique effect and of Mach bands , an inhibition-influenced type of visual illusion, and especially his discovery of

4484-538: The site of the Chirlitz registry office. It was there that Mach was baptised by Peregrin Weiss. Mach later became a socialist and an atheist , but his theory and life was sometimes compared to Buddhism . Heinrich Gomperz called Mach the "Buddha of Science" because of his phenomenalist approach to the "Ego" in his Analysis of Sensations . Up to the age of 14, Mach was educated at home by his parents. He then entered

4560-470: The sound effects observed during the supersonic motion of a projectile . They deduced and experimentally confirmed the existence of a shock wave of conical shape, with the projectile at the apex. The ratio of the speed of a fluid to the local speed of sound v p / v s is called the Mach number after him. It is a critical parameter in the description of high-speed fluid movement in aerodynamics and hydrodynamics . Mach also contributed to cosmology

4636-469: The title Emperor of the French and established the First French Empire . Initially Francis II/I continued to hold both titles but abdicated the throne of the Holy Roman Empire in 1806. This new empire or " Kaiserthum " ( lit.   ' Kaiser -dom ' ) comprised all the lands of the Habsburg monarchy , which had until then been legally separate realms in personal union (a composite monarchy ) under Francis and his predecessors. By contrast,

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4712-430: The whole world is but my idea. Starting from such a premise it is impossible to arrive at the existence of other people besides oneself: it is the purest solipsism. ...if [Mach] does not admit that the "sensible content" is an objective reality, existing independently of us, there remains only a "naked abstract" I, an I infallibly written with a capital letter and italicised, equal to "the insane piano, which imagined that it

4788-430: The words of Adolf Fischhof , four "armies": a standing army of soldiers, a sitting army of office holders, a kneeling army of priests and a fawning army of sneaks . Prisons were full of political prisoners, like Czech nationalist journalist and writer Karel Havlíček Borovský who was forcibly expatriated (1851–1855) to Brixen . This exile undermined Borovský's health and he died soon afterwards. This affair earned Bach

4864-401: Was affirmed by Article X, which was added to Hungary's constitution in 1790 and described the state as a Regnum Independens . Hungary's affairs remained administered by its own institutions (King and Diet) as they had been beforehand; thus no Imperial institutions were involved in its government. The fall and dissolution of the Holy Roman Empire was accelerated by French intervention in

4940-469: Was also the Elector of Hanover (formally Brunswick-Lüneburg) and Duke of Saxe-Lauenburg ; Hanover and Lauenburg were incorporated into the French satellite Kingdom of Westphalia in 1807, having been occupied several times since 1801, but Britain remained at war with France and no treaty was signed recognising their annexation. His claims were later settled by the creation of the Kingdom of Hanover which

5016-776: Was born in Chrlice ( German : Chirlitz ), Moravia , Austrian Empire (now part of Brno in the Czech Republic ). His father, who had graduated from Charles-Ferdinand University in Prague , acted as tutor to the noble Brethon family in Zlín in eastern Moravia. His grandfather, Wenzl Lanhaus, an administrator of the Chirlitz estate, was also master builder of the streets there. His activities in that field later influenced Ernst Mach's theoretical work. Some sources give Mach's birthplace as Tuřany ( German : Turas , also part of Brno),

5092-536: Was critical of the European powers' colonial conquests, saying that they "will constitute...the most distasteful chapter of history for coming generations". Most of Mach's initial studies in experimental physics concentrated on the interference , diffraction , polarization and refraction of light in different media under external influences. From there followed explorations in supersonic fluid mechanics. Mach and physicist-photographer Peter Salcher presented their paper on this subject in 1887; it correctly describes

5168-533: Was declared, which reduced the number of ecclesiastical states from 81 to only 3 and the free imperial cities from 51 to 6. This measure was aimed at replacing the old constitution of the Holy Roman Empire, but the actual consequence of the Imperial Recess, along with the French occupying the Electorate of Hanover in the same month and various Holy Roman states becoming allied with or against France,

5244-411: Was forced to carry the main burden of war with Napoleonic France for almost ten years. This severely overburdened the Austrian economy, making the war greatly unpopular. Emperor Francis I therefore refused to join any further war against Napoleon for a long time. On the other hand, Francis I continued to intrigue for the possibility of revenge against France, entering into a secret military agreement with

5320-493: Was held by George IV and William IV as Kings of Hanover. Succession could only be in the male line, so on Queen Victoria 's accession to the British throne, her uncle, Ernest Augustus , succeeded as King of Hanover, thus ending the personal union with Great Britain that dated to 1714. Klemens von Metternich became Foreign Minister in 1809. He also held the post of Chancellor of State from 1821 until 1848, under both Francis I and his son Ferdinand I . The period of 1815–1848

5396-419: Was significantly undermined, the humiliating Treaty of Pressburg provided plenty of time to strengthen the army and economy. Moreover, the ambitious Archduke Charles and Johann Philipp von Stadion never abandoned the goal of further war with France. Archduke Charles of Austria served as the Head of the Council of War and Commander in Chief of the Austrian army. Endowed with the enlarged powers, he reformed

5472-506: Was that the Austrian Empire was seen as one of the great powers after 1815, but also as a reactionary force and an obstacle to national aspirations in Italy and Germany. During this time, Metternich was able to maintain an elaborate balance between Prussia, the lesser German states, and Austria in the German Confederation . Thanks to his efforts, Austria was seen as the senior partner with Prussia keeping watch over Germany as

5548-487: Was the chief architect of the Congress of Vienna in 1815. The Austrian Empire was the main beneficiary from the Congress of Vienna and it established an alliance with Britain, Prussia , and Russia forming the Quadruple Alliance . The Austrian Empire also gained new territories from the Congress of Vienna, and its influence expanded to the north through the German Confederation and also into Italy. Due to

5624-455: Was the end of the empire. Taking this significant change into consideration, Holy Roman Emperor Francis II created the title Emperor of Austria for himself and his successors, thereby becoming Francis I of Austria. This new title and state were created to safeguard his dynasty's imperial status as he foresaw either the end of the Holy Roman Empire, or the eventual accession of Napoleon as Holy Roman Emperor, who had earlier that year adopted

5700-410: Was the only proper system of government. This notion influenced his anti-revolutionary policy to ensure the continuation of the Habsburg monarchy in Europe. Metternich was a practitioner of balance-of-power diplomacy. His foreign policy aimed to maintain international political equilibrium to preserve the Habsburgs' power and influence in international affairs. Following the Napoleonic Wars , Metternich

5776-452: Was the sole existing thing in this world." If the "sensible content" of our sensations is not the external world then nothing exists save this naked I engaged in empty "philosophical" acrobatics. Empirio-criticism is the term for the rigorously positivist and radically empiricist philosophy established by the German philosopher Richard Avenarius and further developed by Mach, Joseph Petzoldt , and others, that claims that all we can know

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