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Astronomical Observatory Of Lviv University
The Astronomical Observatory of Lviv University is the astronomical observatory of the Ivan Franko National University of Lviv in Lviv, Ukraine. It was founded in 1771 by the Jesuit college of Lviv, which makes it the 17th oldest observatory in Europe. It was closed around 1783 and restored as part of Lviv University in 1900 as the Astronomical Institute and again as the Observatory in 1912. Operations were interrupted by the Second World War, after which the Observatory became part of the University of Lviv in 1945. Research at the observatory encompasses observational and theoretical studies in cosmology, relativistic astrophysics, and stellar astrophysics. History Foundation The first documented astronomical observations in Lviv date back to the mid 18th century. They are associated with the patron of the Jesuit College (of the University), an outstanding religious figure, Lviv archbishop Vaclav Yeronim Ciarakovskyi (1700 – 1780). In terms of technical aspects Father Dom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lviv University
The University of Lviv ( uk, Львівський університет, Lvivskyi universytet; pl, Uniwersytet Lwowski; german: Universität Lemberg, briefly known as the ''Theresianum'' in the early 19th century), presently the Ivan Franko National University of Lviv ( uk, Львівський національний університет імені Івана Франка, Lvivskyi natsionalnyi universitet imeni Ivana Franka), is the oldest institution of higher learning in present-day Ukraine dating from 1661 when John II Casimir, King of Poland, granted it its first royal charter. Over the centuries, it has undergone various transformations, suspensions, and name changes that have reflected the geopolitical complexities of this part of Europe. The present institution can be dated to 1940. It is located in the historic city of Lviv in Lviv Oblast of Western Ukraine. History Polish–Lithuanian Commonwealth The university was founded on January 20, 1661, when King John ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Václav Láska (mathematician)
Václav Láska (1862–1943) was a renowned Czech astronomer, geophysicist, and mathematician. He conducted most of his work at Charles University ) , image_name = Carolinum_Logo.svg , image_size = 200px , established = , type = Public, Ancient , budget = 8.9 billion CZK , rector = Milena Králíčková , faculty = 4,057 , administrative_staff = 4,026 , students = 51,438 , undergr .... Láska's empirical rule This empirical rule is one way how to approximate the distance from an earthquake's epicenter. The rule is most fitting for distance in the range of 2 − 10 Mm (thousand km). ''The epicentral distance in thousands of km is roughly equal to the difference between arrival times of S and P waves in minutes minus 1.'' External links Charles University, Faculty of Mathematics and Physics, Department of Geophysics(in Czech) 1862 births 1943 deaths Czech mathematicians {{CzechRepublic-academic-bio-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Laser Ranging Service
In satellite laser ranging (SLR) a global network of observation stations measures the round trip time of flight of ultrashort pulses of light to satellites equipped with retroreflectors. This provides instantaneous range measurements of millimeter level precision which can be accumulated to provide accurate measurement of orbits and a host of important scientific data. The laser pulse can also be reflected by the surface of a satellite without a retroreflector, which is used for tracking space debris. Satellite laser ranging is a proven geodetic technique with significant potential for important contributions to scientific studies of the earth/atmosphere/ocean system. It is the most accurate technique currently available to determine the geocentric position of an Earth satellite, allowing for the precise calibration of radar altimeters and separation of long-term instrumentation drift from secular changes in ocean topography. Its ability to measure the variations over time in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Laser Ranging
In satellite laser ranging (SLR) a global network of observation stations measures the round trip time of flight of ultrashort pulses of light to satellites equipped with retroreflectors. This provides instantaneous range measurements of millimeter level precision which can be accumulated to provide accurate measurement of orbits and a host of important scientific data. The laser pulse can also be reflected by the surface of a satellite without a retroreflector, which is used for tracking space debris. Satellite laser ranging is a proven geodetic technique with significant potential for important contributions to scientific studies of the earth/atmosphere/ocean system. It is the most accurate technique currently available to determine the geocentric position of an Earth satellite, allowing for the precise calibration of radar altimeters and separation of long-term instrumentation drift from secular changes in ocean topography. Its ability to measure the variations over time in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstellar Medium
In astronomy, the interstellar medium is the matter and radiation that exist in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space. The energy that occupies the same volume, in the form of electromagnetic radiation, is the interstellar radiation field. The interstellar medium is composed of multiple phases distinguished by whether matter is ionic, atomic, or molecular, and the temperature and density of the matter. The interstellar medium is composed, primarily, of hydrogen, followed by helium with trace amounts of carbon, oxygen, and nitrogen. The thermal pressures of these phases are in rough equilibrium with one another. Magnetic fields and turbulent motions also provide pressure in the ISM, and are typically more important, dynamically, than the thermal pressure is. In the interstellar medium, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Physics
Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline said, Astrophysics "seeks to ascertain the nature of the heavenly bodies, rather than their positions or motions in space–''what'' they are, rather than ''where'' they are." Among the subjects studied are the Sun, other stars, galaxies, extrasolar planets, the interstellar medium and the cosmic microwave background. Emissions from these objects are examined across all parts of the electromagnetic spectrum, and the properties examined include luminosity, density, temperature, and chemical composition. Because astrophysics is a very broad subject, ''astrophysicists'' apply concepts and methods from many disciplines of physics, including classical mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic and m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celestial Mechanics
Celestial mechanics is the branch of astronomy that deals with the motions of objects in outer space. Historically, celestial mechanics applies principles of physics (classical mechanics) to astronomical objects, such as stars and planets, to produce ephemeris data. History Modern analytic celestial mechanics started with Isaac Newton's Principia of 1687. The name "celestial mechanics" is more recent than that. Newton wrote that the field should be called "rational mechanics." The term "dynamics" came in a little later with Gottfried Leibniz, and over a century after Newton, Pierre-Simon Laplace introduced the term "celestial mechanics." Prior to Kepler there was little connection between exact, quantitative prediction of planetary positions, using geometrical or arithmetical techniques, and contemporary discussions of the physical causes of the planets' motion. Johannes Kepler Johannes Kepler (1571–1630) was the first to closely integrate the predictive geom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henryk Arctowski
Henryk Arctowski (15 July 1871 – 21 February 1958; ), born Henryk Artzt, was a Polish scientist and explorer. Living in exile for a large part of his life, he was one of the first persons to winter in Antarctica and became an internationally renowned meteorologist. He was instrumental in restoring Polish independence after the First World War. Several geographical features, the Henryk Arctowski Polish Antarctic Station and a medal of the National Academy of Sciences are named in his honor. Early life Henryk Arctowski was born in Warsaw on 15 July 1871 to the Artzt family, whose ancestors came to Poland in the 17th century from Württemberg. As a pupil in the German-occupied part of Poland, he was prosecuted for speaking Polish in school, so his parents sent him to Liège. In 1888 he started studying mathematics, physics and astronomy at the University of Liège, and chemistry and geology at the Sorbonne. Upon completion in 1893, he returned to Liège where he worked in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lviv Polytechnic
Lviv Polytechnic National University ( ua, Націона́льний університе́т «Льві́вська політе́хніка») is the largest scientific university in Lviv, Ukraine. Since its foundation in 1816, it has been one of the most important centres of science and technological development in Central Europe. In the interbellum period, the Polytechnic was one of the most important technical colleges in Poland, together with the Warsaw Polytechnic. In 2020, Lviv Polytechnic was ranked globally among the top 1000 universities according to Times Higher Education. As of 2019, there were approximately 35,000 students in the university. History The history of the Lviv Polytechnic National University begins during the Austrian Empire, and extends through the Second Polish Republic, the Nazi Occupation, the Soviet Union, and into independent Ukraine. On 7 March 1816, the Tsisar-Royal Real School was opened in Lemberg (Lviv). A technical school was establish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lviv
Lviv ( uk, Львів) is the largest city in western Ukraine, and the seventh-largest in Ukraine, with a population of . It serves as the administrative centre of Lviv Oblast and Lviv Raion, and is one of the main cultural centres of Ukraine. It was named in honour of Leo, the eldest son of Daniel, King of Ruthenia. Lviv emerged as the centre of the historical regions of Red Ruthenia and Galicia in the 14th century, superseding Halych, Chełm, Belz and Przemyśl. It was the capital of the Kingdom of Galicia–Volhynia from 1272 to 1349, when it was conquered by King Casimir III the Great of Poland. From 1434, it was the regional capital of the Ruthenian Voivodeship in the Kingdom of Poland. In 1772, after the First Partition of Poland, the city became the capital of the Habsburg Kingdom of Galicia and Lodomeria. In 1918, for a short time, it was the capital of the West Ukrainian People's Republic. Between the wars, the city was the centre of the Lwów Voivodeship in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franz Xaver Von Zach
Baron Franz Xaver von Zach (''Franz Xaver Freiherr von Zach''; 4 June 1754 – 2 September 1832) was a Hungarian astronomer born at Pest, Hungary (now Budapest in Hungary). Biography Zach studied physics at the Royal University of Pest, and served for some time in the Austrian army. He taught at the University of Lemberg (now Lviv, Ukraine) and worked in its observatory. He lived in Paris in 1780–83, and in London from 1783 to 1786 as tutor in the house of the Saxon ambassador, Hans Moritz von Brühl. In Paris and London he entered the circles of astronomers like Joseph de Lalande, Pierre-Simon Laplace and William Herschel. In 1786 he was appointed by Ernest II, Duke of Saxe-Gotha-Altenburg director of the new observatory on Seeberg hill at Gotha, which was finished in 1791. At the close of the 18th century, he organised the "celestial police", a group of twenty-four astronomers, to prepare for a systematic search for the "missing planet" predicted by the Titius-Bode law b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
