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Rudolphine Tables
The ''Rudolphine Tables'' () consist of a star catalogue and planetary tables published by Johannes Kepler in 1627, using observational data collected by Tycho Brahe (1546–1601). The tables are named in memory of Rudolf II, Holy Roman Emperor, in whose employ Brahe and Kepler had begun work on the tables. The main purpose of the Rudolphine tables was to allow the computation of the positions of the then known planets of the Solar System, and they were considerably more precise than earlier such tables. Previous tables Star tables had been produced for many centuries and were used to establish the position of the planets relative to the fixed stars (particularly the twelve constellations used in astrology) on a specific date in order to construct horoscopes. Until the end of the 16th century, the most widely used had been the '' Alphonsine tables'', first produced in the 13th century and regularly updated thereafter. These were based on a Ptolemaic, geocentric model of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
8107-2Keplertp , a heavy-duty truck
{{Numberdis ...
81 may refer to: * 81 (number) * one of the years 81 BC, AD 81, 1981, 2081 * The international calling code for Japan * Nickname for the Hells Angels Motorcycle Club. "H" is the eighth letter of the alphabet, and "A" is the first. * 81 Terpsichore, a main-belt asteroid * 81 mm mortar, a military indirect fire weapon See also * * List of highways numbered * Tatra 81 The Tatra 81 was heavy-duty truck model made by Czech manufacturer Tatra between 1940 and 1942. The development was ordered by German government in the aftermath of the German occupation of Czechoslovakia in 1939 and was complete the same year. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peasants' War In Upper Austria
The Upper Austrian peasant war () of 1626 was a rebellion led by farmers whose goal was to free Upper Austria from Bavarian rule. The motive (found in the of 1625) was an escalation of the Bavarian Electorate's attempt to press the country into the Catholic faith at the time of the Thirty Years' War. History In the beginning of the Thirty Years' War, Upper Austria was pledged to the Bavarian Electorate by the House of Habsburg. The new ruler assumed '' cuius regio, eius religio'' (the religion of the ruler dictated the religion of the ruled) and tried to convert the lands to the Catholic faith. In May 1625, the Protestant priest of the Frankenburg am Hausruck parish was replaced by a Catholic priest sent from Bavaria. After an armed uprising, the new priest was forced to flee from the castle. However, the men feared the reaction from Bavaria and surrendered three days later. Adam von Herberstorff, the Bavarian steward of Upper Austria, called all of the men from the region t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thirty Years' War
The Thirty Years' War, fought primarily in Central Europe between 1618 and 1648, was one of the most destructive conflicts in History of Europe, European history. An estimated 4.5 to 8 million soldiers and civilians died from battle, famine, or disease, while parts of Germany reported population declines of over 50%. Related conflicts include the Eighty Years' War, the War of the Mantuan Succession, the Franco-Spanish War (1635–1659), Franco-Spanish War, the Torstenson War, the Dutch-Portuguese War, and the Portuguese Restoration War. The war had its origins in the 16th-century Reformation, which led to religious conflict within the Holy Roman Empire. The 1555 Peace of Augsburg attempted to resolve this by dividing the Empire into Catholic and Lutheran states, but the settlement was destabilised by the subsequent expansion of Protestantism beyond these boundaries. Combined with differences over the limits of imperial authority, religion was thus an important factor in star ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linz
Linz (Pronunciation: , ; ) is the capital of Upper Austria and List of cities and towns in Austria, third-largest city in Austria. Located on the river Danube, the city is in the far north of Austria, south of the border with the Czech Republic. As of 1 January 2024, the city has a population of 212,538. It is the seventh-largest of all List of cities and towns on the river Danube, cities on the river Danube. History Linz originated as a Roman Empire, Roman fort named ''Lentia'', established in the first century. The name reflects its location at a bend in the Danube (Celtic languages, Celtic root ''lentos'' = "bendable"). This strategic position on the river made it the first Roman fort in the Noricum region, protecting a vital transportation route. The name "Linz" in its present form was first documented in 799. Linz was mentioned as a fortified city in 1236 and was granted city rights in 1324. Johannes Kepler spent several years of his life in the city teaching m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florin
The Florentine florin was a gold coin (in Italian ''Fiorino d'oro'') struck from 1252 to 1533 with no significant change in its design or metal content standard during that time. It had 54 grains () of nominally pure or 'fine' gold with a purchasing power difficult to estimate (and variable) but ranging according to social grouping and perspective from approximately 140 to 1,000 modern US dollars. The name of the coin comes from the ''Giglio bottonato'' ( it), the floral emblem of the city, which is represented at the head of the coin. History The ''fiorino d'oro'' (gold florin) was minted in the Republic of Florence after the sack of Constantinople by the Fourth Crusade disrupted the minting of fine gold coins in the Byzantine Empire. It came to be accepted across Europe like the Byzantine Solidus had been. The territorial usage of the ''lira'' and the florin often overlapped; where the lira was used for smaller transactions (wages, food purchases), the florin was for la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vienna
Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, 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 Culture of Austria, cultural, Economy of Austria, economic, and Politics of Austria, political center of the country, the List of cities in the European Union by population within city limits, fifth-largest city by population in the European Union, and the most-populous of the List of cities and towns on the river Danube, cities on the river Danube. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudolphine Tables
The ''Rudolphine Tables'' () consist of a star catalogue and planetary tables published by Johannes Kepler in 1627, using observational data collected by Tycho Brahe (1546–1601). The tables are named in memory of Rudolf II, Holy Roman Emperor, in whose employ Brahe and Kepler had begun work on the tables. The main purpose of the Rudolphine tables was to allow the computation of the positions of the then known planets of the Solar System, and they were considerably more precise than earlier such tables. Previous tables Star tables had been produced for many centuries and were used to establish the position of the planets relative to the fixed stars (particularly the twelve constellations used in astrology) on a specific date in order to construct horoscopes. Until the end of the 16th century, the most widely used had been the '' Alphonsine tables'', first produced in the 13th century and regularly updated thereafter. These were based on a Ptolemaic, geocentric model of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jesuits In China
The history of the missions of the Jesuits in China is part of the history of relations between China and the Western world. The missionary efforts and other work of the Society of Jesus, or Jesuits, between the 16th and 17th century played a significant role in continuing the transmission of knowledge, science, and culture between China and the West, and influenced Christian culture in Chinese society today. The first attempt by the Jesuits to reach China was made in 1552 by St. Francis Xavier, Navarrese priest and missionary and founding member of the Society of Jesus. Xavier never reached the mainland, dying after only a year on the Chinese island of Shangchuan. Three decades later, in 1582, Jesuits once again initiated mission work in China, led by several figures including the Italian Matteo Ricci, introducing Western science, mathematics, astronomy, and visual arts to the Chinese imperial court, and carrying on significant inter-cultural and philosophical dialogue with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mughal India
The Mughal Empire was an early modern empire in South Asia. At its peak, the empire stretched from the outer fringes of the Indus River Basin in the west, northern Afghanistan in the northwest, and Kashmir in the north, to the highlands of present-day Assam and Bangladesh in the east, and the uplands of the Deccan Plateau in South India.. Quote: "The realm so defined and governed was a vast territory of some , ranging from the frontier with Central Asia in northern Afghanistan to the northern uplands of the Deccan plateau, and from the Indus basin on the west to the Assamese highlands in the east." The Mughal Empire is conventionally said to have been founded in 1526 by Babur, a chieftain from what is today Uzbekistan, who employed aid from the neighboring Safavid and Ottoman Empires Quote: "Babur then adroitly gave the Ottomans his promise not to attack them in return for their military aid, which he received in the form of the newest of battlefield inventions, the matchlock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kepler's Laws Of Planetary Motion
In astronomy, Kepler's laws of planetary motion, published by Johannes Kepler in 1609 (except the third law, which was fully published in 1619), describe the orbits of planets around the Sun. These laws replaced circular orbits and epicycles in the heliocentric theory of Nicolaus Copernicus with elliptical orbits and explained how planetary velocities vary. The three laws state that: # The orbit of a planet is an ellipse with the Sun at one of the two foci. # A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. # The square of a planet's orbital period is proportional to the cube of the length of the semi-major axis of its orbit. The elliptical orbits of planets were indicated by calculations of the orbit of Mars. From this, Kepler inferred that other bodies in the Solar System, including those farther away from the Sun, also have elliptical orbits. The second law establishes that when a planet is closer to the Sun, it travels fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tychonic System
The Tychonic system (or Tychonian system) is a model of the universe published by Tycho Brahe in 1588, which combines what he saw as the mathematical benefits of the Copernican heliocentrism, Copernican system with the philosophical and "physical" benefits of the Ptolemaic system. The model may have been inspired by Valentin Naboth and Paul Wittich, a Silesian mathematician and astronomer. A similar cosmological model was independently proposed in the Hindu astronomical treatise ''Tantrasamgraha'' () by Nilakantha Somayaji of the Kerala school of astronomy and mathematics. It is conceptually a geocentric model, or more precisely geoheliocentric: the Earth is at the centre of the universe, the Sun and Moon and the stars revolve around the Earth, and the other five planets revolve around the Sun. At the same time, the motions of the planets are mathematically equivalent to the motions in Copernicus' heliocentrism, heliocentric system under a simple coordinate transformation, so th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
