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Solar Eclipse Of May 1, 1185
The solar eclipse of 1 May 1185 was a total solar eclipse visible in Central America, Northern Europe, Eastern Europe, and Kazakhstan. The eclipse is number 30 in the Solar Saros 115 series. The eclipse shadow on the Earth's surface was at its greatest at 13:18:02 Universal Time. The sun was in Taurus at this time. Eclipse path The shadow axis passed between the Earth's center and the north pole. The minimum distance from the center of the Earth to the Moon's shadow cone axis was 3,357 kilometers. The average length of the Moon's shadow was 373,320 kilometers. The distance from the Earth to the Moon on 1 May 1185 was 347,727 kilometers. The apparent diameter of the Moon was 1.0736 times that of the sun. The shadow had a maximum width of 280 kilometers. It began on the west coast of Central America and crossed the Atlantic Ocean in a northeasterly direction. The shadow passed through present-day Nicaragua and Haiti. The maximum duration of the eclipse occurred in the middle of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnitogorsk
Magnitogorsk ( rus, Магнитого́рск, p=məɡnʲɪtɐˈɡorsk, ) is an industrial city in Chelyabinsk Oblast, Russia, located on the eastern side of the extreme southern extent of the Ural Mountains by the Ural River. Its population is It was named after Mount Magnitnaya, a geological anomaly that once consisted almost completely of iron ore, around 55% to 60% iron. It is the second-largest city in Russia that is not the administrative centre of any federal subject or district. Magnitogorsk contains the largest iron and steel works in the country: Magnitogorsk Iron and Steel Works. The official motto of the city is "the place where Europe and Asia meet", as the city occupies land in both Europe and Asia. Magnitogorsk is one of only two planned socialist realist settlements ever built (the other being Nowa Huta in Poland). History Foundation Magnitogorsk was founded in 1743 as part of the Orenburg Line of forts built during the reign of the Empress Elizabeth. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Université De Montréal
The Université de Montréal (UdeM; ; translates to University of Montreal) is a French-language public research university in Montreal, Quebec, Canada. The university's main campus is located in the Côte-des-Neiges neighborhood of Côte-des-Neiges–Notre-Dame-de-Grâce on Mount Royal near the Outremont Summit (also called Mount Murray), in the borough of Outremont. The institution comprises thirteen faculties, more than sixty departments and two affiliated schools: the Polytechnique Montréal (School of Engineering; formerly the École polytechnique de Montréal) and HEC Montréal (School of Business). It offers more than 650 undergraduate programmes and graduate programmes, including 71 doctoral programmes. The university was founded as a satellite campus of the Université Laval in 1878. It became an independent institution after it was issued a papal charter in 1919 and a provincial charter in 1920. Université de Montréal moved from Montreal's Quartier Latin to its pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Science Foundation
The National Science Foundation (NSF) is an independent agency of the United States government that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National Institutes of Health. With an annual budget of about $8.3 billion (fiscal year 2020), the NSF funds approximately 25% of all federally supported basic research conducted by the United States' colleges and universities. In some fields, such as mathematics, computer science, economics, and the social sciences, the NSF is the major source of federal backing. The NSF's director and deputy director are appointed by the President of the United States and confirmed by the United States Senate, whereas the 24 president-appointed members of the National Science Board (NSB) do not require Senate confirmation. The director and deputy director are responsible for administration, planning, budgeting and day-to-day operations of the foundation, while t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Prominence
A prominence, sometimes referred to as a filament, is a large plasma and magnetic field structure extending outward from the Sun's surface, often in a loop shape. Prominences are anchored to the Sun's surface in the photosphere, and extend outwards into the solar corona. While the corona consists of extremely hot plasma, prominences contain much cooler plasma, similar in composition to that of the chromosphere. Prominences form over timescales of about a day and may persist in the corona for several weeks or months, looping hundreds of thousands of kilometers into space. Some prominences may give rise to coronal mass ejections. Scientists are currently researching how and why prominences are formed. A typical prominence extends over many thousands of kilometers; the largest on record was estimated at over long, roughly a solar radius. History The first detailed description of a solar prominence was in 14th-century Laurentian Codex, describing the Solar eclipse of 1 May 11 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurentian Codex
Laurentian Codex or Laurentian Letopis (russian: Лаврентьевский список, Лаврентьевская летопись) is a collection of chronicles that includes the oldest extant version of the ''Primary Chronicle'' and its continuations, mostly relating the events in Northern Russia (Vladimir-Suzdal). The scribe and his source The codex was not just copied by the Nizhegorod monk Laurentius commissioned by Dionysius of Suzdal in 1377. The original text on events from 1284 to 1305 was a lost codex compiled for the Grand Duke Mikhail of Tver in 1305, but Laurentius re-edited the presentation of Yuri Vsevolodovich, the founder of Nizhny Novgorod, from positive into a negative, partly rehabilitating the role of Tatars. Vasily Komarovich studied traces of changes within the manuscript and established a hypothesis about differences between Laurentius' version and the lost one of the Tver chronicle. Content The Laurentian Codex compiled several codices of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retinue
A retinue is a body of persons "retained" in the service of a noble, royal personage, or dignitary; a ''suite'' (French "what follows") of retainers. Etymology The word, recorded in English since circa 1375, stems from Old French ''retenue'', itself from ''retenir'', from the Latin ''retenere'': to hold back or retain. Employment Such retainers were not necessarily in the domestic service or otherwise normally close to the presence of their lord, but also include others who wore his livery (a kind of uniform, in distinctive colours) and claimed his protection, such as musicians and tutors. Some were a source of trouble and abuse in the 15th and early 16th century. Often their real importance was very different from their rank: on the one hand, sinecures and supernumerary appointments allowed enjoying benefits without performing full service. On the other hand, 'having the ear' of the master can allow one to act as a confidant in an informal capacity; or in some cases, even as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cumans
The Cumans (or Kumans), also known as Polovtsians or Polovtsy (plural only, from the Russian language, Russian Exonym and endonym, exonym ), were a Turkic people, Turkic nomadic people comprising the western branch of the Cuman–Kipchak confederation. After the Mongol invasion of Rus', Mongol invasion (1237), many sought Right of asylum, asylum in the Kingdom of Hungary, as many Cumans had settled in Hungary, the Second Bulgarian Empire playing an important role in the development of the state. Cumans played also an important role in (The Byzantine Empire, the Latin Empire, and the Empire of Nicaea, Nicaea Empire) Anatolia . Related to the Pecheneg, they inhabited a shifting area north of the Black Sea and along the Volga River known as Cumania, from which the Cuman–Kipchaks meddled in the politics of the Caucasus and the Khwarazmian Empire. The Cumans were fierce and formidable nomadic warriors of the Eurasian Steppe who exerted an enduring influence on the medieval Balkans. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Igor Svyatoslavich
Prince Igor Sviatoslavich the Brave or Ihor Sviatoslavych (Old East Slavic: Игорь Святъславичь, ''Igorĭ Svjatŭslavičĭ''; uk, Ігор Святославич, ''Ihor Svyatoslavych''; russian: Игорь Святославич, ''Igor Svyatoslavich''; Old Norse: ''Ingvar Sveinaldsson'') (Novhorod-Siverskyi, April 3/10, 1151 – the spring of 1201/December 29, 1202) was a Rus’ prince (a member of the Rurik dynasty). His baptismal name was Yury. Igor was prince of Putivl (1164–1180), of Novgorod-Seversk (1180–1198), and of Chernigov (1198–1201/1202). Chronicle evidence reveals that he had an enviably successful military career; he led many campaigns against the Cumans from among which the chronicles report only one defeat. But it was his defeat at the river Kayala (the exact location of which has never been definitively established) that has become immortalized through its literary rendering in ''“ The Lay of Igor’s Campaign”'', the most celeb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopedia Of Ukraine
The ''Encyclopedia of Ukraine'' ( uk, Енциклопедія українознавства, translit=Entsyklopediia ukrainoznavstva), published from 1984 to 2001, is a fundamental work of Ukrainian Studies. Development The work was created under the auspices of the Shevchenko Scientific Society in Europe (Sarcelles, near Paris). As the ''Encyclopedia of Ukrainian Studies'' it conditionally consists of two parts, the first being a general part that consists of a three volume reference work divided in to subjects or themes. The second part is a 10 volume encyclopedia with entries arranged alphabetically. The editor-in-chief of Volumes I and II (published in 1984 and 1988 respectively) was Volodymyr Kubijovyč. The concluding three volumes, with Danylo Husar Struk as editor-in-chief, appeared in 1993. The encyclopedia set came with a 30-page ''Map & Gazetteer of Ukraine'' compiled by Kubijovyč and Arkadii Zhukovsky. It contained a detailed fold-out map (scale 1:2,000,000). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tale Of Igor's Campaign
''The Tale of Igor's Campaign'' ( orv, Слово о пълкѹ Игоревѣ, translit=Slovo o pŭlku Igorevě) is an anonymous epic poem written in the Old East Slavic language. The title is occasionally translated as ''The Tale of the Campaign of Igor'', ''The Song of Igor's Campaign'', ''The Lay of Igor's Campaign'', ''The Lay of the Host of Igor'', and ''The Lay of the Warfare Waged by Igor''. The poem gives an account of a failed raid of Igor Svyatoslavich (d. 1202) against the Polovtsians of the Don River region. While some have disputed the authenticity of the poem, the current scholarly consensus is that the poem is authentic and dates to the Middle Ages (late 12th century). The ''Tale of Igor's Campaign'' was adapted by Alexander Borodin as an opera and became one of the great classics of Russian theatre. Entitled ''Prince Igor'', it was first performed in 1890. Content The story describes a failed raid made in year 1185 by ''Kniaz'' Igor Svyatoslavich, Prince of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kievan Rus'
Kievan Rusʹ, also known as Kyivan Rusʹ ( orv, , Rusĭ, or , , ; Old Norse: ''Garðaríki''), was a state in Eastern and Northern Europe from the late 9th to the mid-13th century.John Channon & Robert Hudson, ''Penguin Historical Atlas of Russia'' (Penguin, 1995), p.14–16.Kievan Rus Encyclopædia Britannica Online. Encompassing a variety of polities and peoples, including East Slavic, Norse, and Finnic, it was ruled by the , fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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