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Ignatz Mühlwenzel
Ignatz Heinrich Mühlwenzel (c. 1690 – 11 July 1766) was a Bohemian mathematician. Life Ignatz Heinrich Mühlwenzel (referred to in ''Biographisches Lexikon des Kaiserthums Oesterreich'' as ''Heinrich Mühlwenzel'')''Biographisches Lexikon des Kaiserthums Oesterreich'', Vol. 19, Vienna 1868, p. 31on German Wikisource/ref> was a member of the Jesuit order and a professor of mathematics at the University of Prague. He was of minority German ethnicity in western Czech border. He was a skilled optician who ground lenses for his own telescopes. Mühlwenzel is notable because his mathematical "descendants," which include Johann Radon Johann Karl August Radon (; 16 December 1887 – 25 May 1956) was an Austrian mathematician. His doctoral dissertation was on the calculus of variations (in 1910, at the University of Vienna). Life RadonBrigitte Bukovics: ''Biography of Johan ..., number more than 10,000. In 1736 he published ''Fundamenta mathematica ex arithmetica, geometri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheb
Cheb (; ) is a town in the Karlovy Vary Region of the Czech Republic. It has about 33,000 inhabitants. It lies on the Ohře River. Before the Expulsion of Germans from Czechoslovakia, expulsion of Germans in 1945, the town was the centre of the German-speaking region known as Egerland. The historic town centre is well preserved and is protected as an Cultural monument (Czech Republic)#Monument reservations, urban monument reservation. Administrative division Cheb consists of 19 municipal parts (in brackets population according to the 2021 census): *Cheb (26,768) *Bříza (47) *Cetnov (104) *Chvoječná (28) *Dolní Dvory (49) *Dřenice (50) *Háje (1,082) *Horní Dvory (57) *Hradiště (206) *Hrozňatov (209) *Jindřichov (86) *Klest (41) *Loužek (23) *Pelhřimov (95) *Podhoří (142) *Podhrad (665) *Skalka (228) *Střížov (172) *Tršnice (109) Etymology The first name of the town, documented in 1061, was ''Egire''. It was a Latin name, which was derived from the Celtic nam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optician
An optician is an individual who fits glasses or contact lenses by filling a refractive prescription from an optometrist or ophthalmologist. They are able to translate and adapt ophthalmic prescriptions, dispense products, and work with accessories. There are several specialties within the field. Types Dispensing optician or ophthalmic dispenser A dispensing optician is anyone who prepares, fits, and dispenses prescription lenses, spectacles, glasses, contact lenses, or any other type of vision-correcting optical device to the intended user. They may interpret optical prescriptions issued by an ophthalmologist, optometrist, or physician for the lab optician who fabricates vision-correcting optical lenses. They also measure inter-ocular or pupillary distances, vertex distances, pupil fitting heights, and frame angles to determine the proper position of vision-correcting lenses. In addition, they adapt, modify, or align frames with vision-correcting lenses to the face of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jesuit Scientists
This is a list of Catholic clergy throughout history who have made contributions to science. These churchmen-scientists include Nicolaus Copernicus, Gregor Mendel, Georges Lemaître, Albertus Magnus, Roger Bacon, Pierre Gassendi, Roger Joseph Boscovich, Marin Mersenne, Bernard Bolzano, Francesco Maria Grimaldi, Nicole Oresme, Jean Buridan, Robert Grosseteste, Christopher Clavius, Nicolas Steno, Athanasius Kircher, Giovanni Battista Riccioli, and William of Ockham. The Catholic Church has also produced many List of Catholic scientists, lay scientists and mathematicians. The Jesuits in particular have made numerous significant contributions to the development of science. For example, the Jesuits have dedicated significant study to earthquakes, and seismology has been described as "the Jesuit science." The Jesuits have been described as "the single most important contributor to experimental physics in the seventeenth century." According to Jonathan Wright (historian), Jonathan Wri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telescope Manufacturers
A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. Originally, it was an optical instrument using lenses, curved mirrors, or a combination of both to observe distant objects – an optical telescope. Nowadays, the word "telescope" is defined as a wide range of instruments capable of detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors. The first known practical telescopes were refracting telescopes with glass lenses and were invented in the Netherlands at the beginning of the 17th century. They were used for both terrestrial applications and astronomy. The reflecting telescope, which uses mirrors to collect and focus light, was invented within a few decades of the first refracting telescope. In the 20th century, many new types of telescopes were invented, including radio telescopes in the 1930s and infrared telescopes in the 1960s. Etymology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
18th-century German Mathematicians
The 18th century lasted from 1 January 1701 (represented by the Roman numerals MDCCI) to 31 December 1800 (MDCCC). During the 18th century, elements of Age of Enlightenment, Enlightenment thinking culminated in the Atlantic Revolutions. Revolutions began to challenge the legitimacy of monarchical and aristocratic power structures. The Industrial Revolution began mid-century, leading to radical changes in Society, human society and the Natural environment, environment. The European colonization of the Americas and other parts of the world intensified and associated mass migrations of people grew in size as part of the Age of Sail. During the century, History of slavery, slave trading expanded across the shores of the Atlantic Ocean, while declining in Russian Empire, Russia and Qing dynasty, China. Western world, Western historians have occasionally defined the 18th century otherwise for the purposes of their work. For example, the "short" 18th century may be defined as 1715� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Bohemian People
German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also German nationality law **Germanic peoples (Roman era) * German diaspora * German language * German cuisine, traditional foods of Germany People * German (given name) * German (surname) * Germán, a Spanish name Places * German (parish), Isle of Man * German, Albania, or Gërmej * German, Bulgaria * German, Iran * German, North Macedonia * German, New York, U.S. * Agios Germanos, Greece Other uses * German (mythology), a South Slavic mythological being * Germans (band), a Canadian rock band * "German" (song), a 2019 song by No Money Enterprise * ''The German'', a 2008 short film * "The Germans", an episode of ''Fawlty Towers'' * ''The German'', a nickname for Congolese rebel André Kisase Ngandu See also * Germanic (disambi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People From Cheb
The term "the people" refers to the public or common mass of people of a polity. As such it is a concept of human rights law, international law as well as constitutional law, particularly used for claims of popular sovereignty. In contrast, a people is any plurality of persons considered as a whole. Used in politics and law, the term "a people" refers to the collective or community of an ethnic group or nation. Concepts Legal Chapter One, Article One of the Charter of the United Nations states that "peoples" have the right to self-determination. Though the mere status as peoples and the right to self-determination, as for example in the case of Indigenous peoples (''peoples'', as in all groups of indigenous people, not merely all indigenous persons as in ''indigenous people''), does not automatically provide for independent sovereignty and therefore secession. Indeed, judge Ivor Jennings identified the inherent problems in the right of "peoples" to self-determination, as i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1766 Deaths
Events January–March * January 1 – Charles Edward Stuart ("Bonnie Prince Charlie") becomes the new Stuart claimant to the throne of Great Britain, as King Charles III, and figurehead for Jacobitism. * January 14 – Christian VII becomes King of Denmark-Norway. * January 20 – Burmese–Siamese War: Outside of the walls of the Thailand capital of Ayutthaya, tens of thousands of invaders from Burma (under the command of General Ne Myo Thihapate and General Maha Nawatra) are confronted by Thai defenders led by General Phya Taksin. The defenders are overwhelmed and the survivors take refuge inside Ayutthaya. The siege continues for 15 months before the Burmese attackers collapse the walls by digging tunnels and setting fire to debris. The city falls on April 9, 1767, and King Ekkathat is killed. * February 5 – An observer in Wilmington, North Carolina reports to the Edinburgh newspaper ''Caledonian Mercury'' that three ships have been seize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1690 Births
Events January–March * January 2 – The Ottoman Empire defeats Serbian rebels and Austrian troops in battle at Kaçanik Gorge, prompting more than 30,000 Serb refugees to flee northward from Kosovo, Macedonia and Sandžak to the Austrian Empire. * January 6 – At the age of 11 years old, Prince Joseph, son of Leopold I, Holy Roman Emperor, is named as "King of the Romans", the next in line to become the Emperor. * January 7 – The first recorded full peal is rung, at St Sepulchre-without-Newgate in the City of London, marking a new era in change ringing. * January 13 – Captain Thomas Pound, after being captured with his crew the previous month, is tried in Boston and found guilty of piracy although he is later reprieved. * January 27 ** The crew of the ship HMS ''Welfare'', commanded by John Strong, become the first European people to land at the Falkland Islands. ** William Coward is hanged for acts of piracy, following his capture after seizing the ketch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Radon
Johann Karl August Radon (; 16 December 1887 – 25 May 1956) was an Austrian mathematician. His doctoral dissertation was on the calculus of variations (in 1910, at the University of Vienna). Life RadonBrigitte Bukovics: ''Biography of Johann Radon'', in: 75 Years of Radon Transform, S. Gindikin and P. Michor, eds., International Press Incorporated (1994), pp. 13–18, was born in Tetschen, Bohemia, Austria-Hungary, now Děčín, Czech Republic. He received his doctoral degree at the University of Vienna in 1910. He spent the winter semester 1910/11 at the University of Göttingen, then he was an assistant at the German Technical University in Brno, and from 1912 to 1919 at the Technical University of Vienna. In 1913/14, he passed his habilitation at the University of Vienna. Due to his near-sightedness, he was exempt from the draft during wartime. In 1919, he was called to become Professor extraordinarius at the newly founded University of Hamburg; in 1922, he became '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematics
Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many areas of mathematics, which include number theory (the study of numbers), algebra (the study of formulas and related structures), geometry (the study of shapes and spaces that contain them), Mathematical analysis, analysis (the study of continuous changes), and set theory (presently used as a foundation for all mathematics). Mathematics involves the description and manipulation of mathematical object, abstract objects that consist of either abstraction (mathematics), abstractions from nature orin modern mathematicspurely abstract entities that are stipulated to have certain properties, called axioms. Mathematics uses pure reason to proof (mathematics), prove properties of objects, a ''proof'' consisting of a succession of applications of in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingdom Of Bohemia
The Kingdom of Bohemia (), sometimes referenced in English literature as the Czech Kingdom, was a History of the Czech lands in the High Middle Ages, medieval and History of the Czech lands, early modern monarchy in Central Europe. It was the predecessor state of the modern Czech Republic. The Kingdom of Bohemia was an Imperial State in the Holy Roman Empire. The List of Bohemian monarchs, Bohemian king was a prince-elector of the empire. The kings of Bohemia, besides the region of Bohemia itself, also ruled other Lands of the Bohemian Crown, lands belonging to the Bohemian Crown, which at various times included Moravia, Silesia, Lusatia, and parts of Saxony, Brandenburg, and Bavaria. The kingdom was established by the Přemyslid dynasty in the 12th century by the Duchy of Bohemia, later ruled by the House of Luxembourg, the Jagiellonian dynasty, and from 1526 the House of Habsburg and its successor, the House of Habsburg-Lorraine. Numerous kings of Bohemia were also elected Hol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
