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August Kundt
August Adolf Eduard Eberhard Kundt (; 18 November 1839 – 21 May 1894) was a German physicist known for developing Kundt's tube, an appartus used to measure the speed of sound in gases and solids. Early life Kundt was born in Schwerin, Mecklenburg. He began his scientific studies at Leipzig, but afterwards went to Berlin University. At first, he devoted himself to astronomy, but coming under the influence of Heinrich Gustav Magnus, he turned his attention to physics, and graduated in 1864 with a thesis on the depolarization of light. In 1867, he became a ''privatdozent'' at Berlin, and in the following year was chosen as Professor of Physics at the Federal Polytechnic Institute in Zurich, where he was the teacher of Wilhelm Röntgen. In 1872, he was called to Straßburg, where he took a great part in the organization of the new university, and was largely concerned in the erection of the Physical Institute. Finally in 1888, he returned to Berlin as successor to Hermann v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schwerin
Schwerin (; Mecklenburgisch-Vorpommersch dialect, Mecklenburgisch-Vorpommersch Low German: ''Swerin''; Polabian language, Polabian: ''Zwierzyn''; Latin: ''Suerina'', ''Suerinum'') is the Capital city, capital and List of cities and towns in Germany, second-largest city of the northeastern States of Germany, German state of Mecklenburg-Vorpommern as well as of the region of Mecklenburg, after Rostock. It has around 96,000 inhabitants, and is thus the least populous of all German state capitals. Schwerin is located on the southwestern shore of Lake Schwerin (''Schweriner See''), the second-largest lake of the Mecklenburg Lake Plateau after the Müritz, and there are eleven other lakes within Schwerin's city limits. The city is surrounded by the district of Nordwestmecklenburg, Northwestern Mecklenburg to the north, and the district of Ludwigslust-Parchim to the south. Schwerin and the two surrounding districts form the eastern outskirts of the Hamburg Metropolitan Region. The name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Friedrich Paschen
Louis Carl Heinrich Friedrich Paschen (22 January 1865 – 25 February 1947) was a German physicist, known for his work on electrical discharges. He is also known for the Paschen series, a series of hydrogen spectral lines in the infrared region that he first observed in 1908. He established the now widely used Paschen curve in his article ''"Über die zum Funkenübergang in Luft, Wasserstoff und Kohlensäure bei verschiedenen Drücken erforderliche Potentialdifferenz"''. He is known for the Paschen-Back effect, which is the Zeeman effect's becoming non-linear at high magnetic field. He helped explain the hollow cathode effect in 1916. Life Paschen was born in Schwerin, Grand Duchy of Mecklenburg-Schwerin. From 1884 to 1888 he studied at the universities of Berlin and Strassburg, after which he became an assistant at the Academy of Münster. He became a professor at the Technische Hochschule Hannover in 1893 and professor of physics at the University of Tübingen in 1901. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomy
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, natural satellite, moons, stars, nebulae, galaxy, galaxies, meteoroids, asteroids, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond atmosphere of Earth, Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Egyptian astronomy, Egyptians, Babylonian astronomy, Babylonians, Greek astronomy, Greeks, Indian astronomy, Indians, Chinese astronomy, Chinese, Maya civilization, M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berlin University
The Humboldt University of Berlin (, abbreviated HU Berlin) is a public research university in the central borough of Mitte in Berlin, Germany. The university was established by Frederick William III on the initiative of Wilhelm von Humboldt, Johann Gottlieb Fichte and Friedrich Daniel Ernst Schleiermacher as the University of Berlin () in 1809, and opened in 1810. From 1828 until its closure in 1945, it was named the (Royal) Friedrich Wilhelm University of Berlin (FWU Berlin; ). During the Cold War, the university found itself in East Berlin and was ''de facto'' split in two when the Free University of Berlin opened in West Berlin. The university received its current name in honour of Alexander and Wilhelm von Humboldt in 1949. The university is divided into nine faculties including its medical school shared with the Freie Universität Berlin. The university has a student enrollment of around 35,000 students, and offers degree programs in some 171 disciplines from undergra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leipzig
Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Germany and is part of the Central German Metropolitan Region. The name of the city is usually interpreted as a Slavic term meaning ''place of linden trees'', in line with many other Slavic placenames in the region. Leipzig is located about southwest of Berlin, in the southernmost part of the North German Plain (the Leipzig Bay), at the confluence of the White Elster and its tributaries Pleiße and Parthe. The Leipzig Riverside Forest, Europe's largest intra-city riparian forest, has developed along these rivers. Leipzig is at the centre of Neuseenland (''new lake district''). This district has Bodies of water in Leipzig, several artificial lakes created from former lignite Open-pit_mining, open-pit mines. Leipzig has been a trade city s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mecklenburg
Mecklenburg (; ) is a historical region in northern Germany comprising the western and larger part of the federal-state Mecklenburg-Western Pomerania. The largest cities of the region are Rostock, Schwerin, Neubrandenburg, Wismar and Güstrow. The name Mecklenburg derives from a castle named '' Mikilenburg'' (Old Saxon for "big castle", hence its translation into Neo-Latin and Greek as ), located between the cities of Schwerin and Wismar. In Slavic languages it was known as ''Veligrad'', which also means "big castle". It was the ancestral seat of the House of Mecklenburg; for a time the area was divided into Mecklenburg-Schwerin and Mecklenburg-Strelitz among the same dynasty. Linguistically Mecklenburgers retain and use many features of Low German vocabulary or phonology. The adjective for the region is ''Mecklenburgian'' or ''Mecklenburgish'' (); inhabitants are called Mecklenburgians or Mecklenburgers (). Geography Mecklenburg is known for its mostly flat countryside. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speed Of Sound
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elasticity (solid mechanics), elastic medium. More simply, the speed of sound is how fast vibrations travel. At , the speed of sound in air is about , or in or one mile in . It depends strongly on temperature as well as the medium through which a sound wave is propagating. At , the speed of sound in dry air (sea level 14.7 psi) is about . The speed of sound in an ideal gas depends only on its temperature and composition. The speed has a weak dependence on frequency and pressure in dry air, deviating slightly from ideal behavior. In colloquial speech, ''speed of sound'' refers to the speed of sound waves in Earth's atmosphere, air. However, the speed of sound varies from substance to substance: typically, sound travels most slowly in gases, faster in liquids, and fastest in solids. For example, while sound travels at in air, it travels at in water (almost 4.3 times a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physicist
A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate causes of Phenomenon, phenomena, and usually frame their understanding in mathematical terms. They work across a wide range of Physics#Research fields, research fields, spanning all length scales: from atom, sub-atomic and particle physics, through biological physics, to physical cosmology, cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: Experimental physics, experimental physicists who specialize in the observation of natural phenomena and the development and analysis of experiments, and Theoretical physics, theoretical physicists who specialize in mathematical modeling of physical systems to rationalize, explain and predict natural phenomena. Physicists can apply their k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Max Wien
Max Karl Werner Wien (; 25 December 1866 – 22 February 1938) was a German physicist and the director of the Institute of Physics at the University of Jena. He was born in Königsberg, Prussia (now Kaliningrad, Russia), the son of the co-owner of the well-known Castell grain company, Otto Wien. Wien, Max. Kulturstiftung der deutschen Vertriebenen für Wissenschaft und Forschun(in German). He was a cousin of Nobel laureate Wilhelm Wien. Wien studied in Konigsberg, Freiburg, and Berlin under Hermann von Helmholtz and August Kundt, receiving his PhD under Helmholtz in 1888.Karl Willy Wagner, "Max Wien zum 70. Geburtstag", Naturwissenschaften, Volume 25, Number 5, 65-67,(link to pdf)(in German). In 1892 he worked with Wilhelm Röntgen in Würzburg, where in 1893 he received the ''habilitation'', qualifying him to be a professor. He moved to the Technical High School of Aachen in 1898 where he became Extraordinary Professor in 1899. In 1904 he became full Professor at the Technic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emil Warburg
Emil Gabriel Warburg (; 9 March 1846 – 28 July 1931) was a German physicist who during his career was professor of physics at the Universities of Strassburg, Freiburg and Berlin. He was president of the Deutsche Physikalische Gesellschaft 1899–1905. His name is notably associated with the Warburg element of electrochemistry. Among his students were James Franck (Nobel Prize in Physics, 1925), Eduard Grüneisen, Robert Pohl, Erich Regener and Hans von Euler-Chelpin (Nobel Prize in Chemistry, 1929). He carried out research in the areas of kinetic theory of gases, electrical conductivity, gas discharges, heat radiation, ferromagnetism and photochemistry. He was the father of Otto Heinrich Warburg (Nobel Prize in Physiology, 1931). He was a friend of Albert Einstein Albert Einstein (14 March 187918 April 1955) was a German-born theoretical physicist who is best known for developing the theory of relativity. Einstein also made important contributions to quantum mecha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franz S
Franz may refer to: People * Franz (given name) * Franz (surname) Places * Franz (crater), a lunar crater * Franz, Ontario, a railway junction and unorganized town in Canada * Franz Lake, in the state of Washington, United States – see Franz Lake National Wildlife Refuge Businesses * Franz Deuticke, a scientific publishing company based in Vienna, Austria * Franz Family Bakeries, a food processing company in Portland, Oregon * Franz-porcelains, a Taiwanese brand of pottery based in San Francisco Other uses * ''Franz'' (1971 film), a Belgian film * Franz (2025 film), an upcoming biographical film of Franz Kafka * Franz Lisp, a dialect of the Lisp programming language See also * Frantz (other) Frantz may refer to: * Frantz (given name), a masculine given name (and list of people with the given name) * Frantz (surname), a surname (and list of people with the surname) * Frantz (''Coppélia''), a character in ''Coppélia'' * ''Frantz'' ( ... * Franzen (disamb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermann Theodor Simon
Hermann Theodor Simon (1 January 1870, in Kirn – 22 December 1918, in Göttingen) was a German physicist. Biography He studied physics at the Universities of University of Heidelberg, Heidelberg and University of Berlin, Berlin, earning his doctorate in 1894 under August Kundt with a thesis on the dispersion of ultraviolet radiation. Afterwards, he served as an assistant to Eilhard Wiedemann at University of Erlangen, Erlangen, obtaining his habilitation in 1896. Two years later, he became an assistant to Eduard Riecke at the University of Göttingen, then relocated to Frankfurt am Main as director of the physics laboratory. In 1901 he returned to Göttingen as an associate professor and director of the department of applied electricity. In 1907 he was appointed as a full professor at the University of Göttingen. With Eduard Riecke, he was editor of the physics journal ''Physikalische Zeitschrift''. He discovered the "singing arc" phenomenon and reported it in 1898. Specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
