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Franz Richarz
Franz Richarz (15 October 1860, in Endenich – 10 June 1920, in Marburg) was a German physicist. His father, also named Franz Richarz (1812–1887), was a noted psychiatrist. He studied mathematics and physics at the universities of Berlin and Bonn, receiving his doctorate in 1884 with the dissertation ''Bildung von Ozon, Wasserstoffsuperoxyd und Ueberschwefelsäure bei der Electrolyse verdünnter Schwefelsäure'' ("The formation of ozone, hydrogen peroxide and sulfuric acid during the electrolysis of dilute sulfuric acid"). In 1888 he obtained his habilitation and worked as a lecturer of physics at the University of Bonn. In 1895 he succeeded Anton Oberbeck as professor of physics at the University of Greifswald, where he also served as director of the Physics Institute. In 1901 he relocated as a professor to the University of Marburg. In 1907 he became a member of the Deutsche Akademie der Naturforscher Leopoldina. With Otto Krigar-Menzel, he conducted a series of experiments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endenich
Endenich is a neighborhood in the western part of Bonn, Germany. Before 1904 it was an independent municipality. The village of Endenich was founded in the 8th century, and was first mentioned in 804 as ''Antiniche''. Today, about 12,000 people live in Endenich. Sights The composer and pianist Robert Schumann lived the last two years of his life in the mental clinic ''Richarz'sche Heilanstalt'' on Magdalenenstraße (on today's Sebastianstraße), where he died on July 29, 1856. The former clinic now houses the Schumannhaus Bonn, a music library and museum. In the northern part is the Max Planck Institute for Radio Astronomy which was opened in 1972. The improvisational theatre Springmaus, founded by Bill Mockridge, is located in Endenich. Well-known comedians such as Bernhard Hoëcker, Dirk Bach and Bastian Pastewka have performed at this theatre. Endenich is one of the most cultural districts of Bonn. There are many good restaurants, a very charming retro cinema, pubs and an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mean Density Of The Earth
Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering Water distribution on Earth, 70.8% of Earth's crust. The remaining 29.2% of Earth's crust is land, most of which is located in the form of continental landmasses within Earth's land hemisphere. Most of Earth's land is at least somewhat humid and covered by vegetation, while large Ice sheet, sheets of ice at Polar regions of Earth, Earth's polar polar desert, deserts retain more water than Earth's groundwater, lakes, rivers, and Water vapor#In Earth's atmosphere, atmospheric water combined. Earth's crust consists of slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth's outer core, Earth has a liquid outer core that generates a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academic Staff Of The University Of Marburg
An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of tertiary education. The name traces back to Plato's school of philosophy, founded approximately 386 BC at Akademia, a sanctuary of Athena, the goddess of wisdom and skill, north of Athens, Greece. The Royal Spanish Academy defines academy as scientific, literary or artistic society established with public authority and as a teaching establishment, public or private, of a professional, artistic, technical or simply practical nature. Etymology The word comes from the ''Academy'' in ancient Greece, which derives from the Athenian hero, ''Akademos''. Outside the city walls of Athens, the gymnasium was made famous by Plato as a center of learning. The sacred space, dedicated to the goddess of wisdom, Athena, had formerly been an olive grove, hence the expression "the groves of Academe". In these gardens, the philosopher Plato conversed with followers. Plato developed his sessions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Bonn Alumni
A university () is an institution of tertiary education and research which awards academic degrees in several academic disciplines. ''University'' is derived from the Latin phrase , which roughly means "community of teachers and scholars". Universities typically offer both undergraduate and postgraduate programs. The first universities in Europe were established by Catholic monks. The University of Bologna (), Italy, which was founded in 1088, is the first university in the sense of: *being a high degree-awarding institute. *using the word (which was coined at its foundation). *having independence from the ecclesiastic schools and issuing secular as well as non-secular degrees (with teaching conducted by both clergy and non-clergy): grammar, rhetoric, logic, theology, canon law and notarial law.Hunt Janin: "The university in medieval life, 1179–1499", McFarland, 2008, , p. 55f.de Ridder-Symoens, Hilde''A History of the University in Europe: Volume 1, Universities in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humboldt University Of Berlin Alumni
Humboldt may refer to: People * Alexander von Humboldt, German natural scientist, brother of Wilhelm von Humboldt * Wilhelm von Humboldt, German linguist, philosopher, and diplomat, brother of Alexander von Humboldt Fictional characters * Humboldt Fleisher, character in novel ''Humboldt's Gift'' * Wes Humboldt, character played by Mike O'Brien on ''Corner Gas'' Places Argentina * Humboldt, Argentina, a town in Santa Fe Province, Argentina Australia * Humboldt, Queensland, a locality in the Central Highlands Region Canada * Humboldt, Saskatchewan * Rural Municipality of Humboldt No. 370, Saskatchewan * Humboldt (federal electoral district), a former federal electoral district * Humboldt (provincial electoral district), a former Saskatchewan provincial electoral district United States * Settled places: ** Dewey-Humboldt, Arizona ** Humboldt, Illinois ** Humboldt, Iowa ** Humboldt, Kansas ** Humboldt, Minnesota ** Humboldt, Nebraska ** Humboldt, Ohio ** Humb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientists From Bonn
A scientist is a person who researches to advance knowledge in an area of the natural sciences. In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy, a precursor of natural science. Though Thales ( 624–545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods,Frank N. Magill''The Ancient World: Dictionary of World Biography'', Volume 1 Routledge, 2003 it was not until the 19th century that the term ''scientist'' came into regular use after it was coined by the theologian, philosopher, and historian of science William Whewell in 1833. History The roles of "scientists", and their predecessors before the emergence of modern scientific disciplines, have evolved considerably over time. Scientists of different eras (and before them, natural philosophers, mathematicians, natur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1920 Deaths
Events January * January 1 ** Polish–Soviet War: The Russian Red Army increases its troops along the Polish border from 4 divisions to 20. ** Kauniainen in Finland, completely surrounded by the city of Espoo, secedes from Espoo as its own market town. * January 7 – Russian Civil War: The forces of White movement, Russian White Admiral Alexander Kolchak surrender in Krasnoyarsk; the Great Siberian Ice March ensues. * January 10 ** The Treaty of Versailles takes effect, officially ending World War I. ** The League of Nations Covenant enters into force. On January 16, the organization holds its first council meeting, in Paris. * January 11 – The Azerbaijan Democratic Republic is recognised de facto by European powers in Palace of Versailles, Versailles. * January 13 – ''The New York Times'' Robert H. Goddard#Publicity and criticism, ridicules American rocket scientist Robert H. Goddard, which it will rescind following the launch of Apollo 11 in 1969. * Janua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1860 Births
Events January * January 2 – The astronomer Urbain Le Verrier announces the discovery of a hypothetical planet Vulcan (hypothetical planet), Vulcan at a meeting of the French Academy of Sciences in Paris, France. * January 10 – The Pemberton Mill in Lawrence, Massachusetts collapses, killing at least 77 workers. * January 13 – Battle of Tétouan, Morocco: Spanish troops under General Leopoldo O'Donnell, 1st Duke of Tetuan defeat the Moroccan Army. * January 20 – Camillo Benso, Count of Cavour is recalled as Prime Minister of Piedmont-Sardinia. February * February 20 – Canadian Royal Mail steamer (1859) is wrecked on Cape Sable Island, Nova Scotia, on passage from the British Isles to the United States with all 205 onboard lost. * February 26 – The 1860 Wiyot Massacre, Wiyot Massacre takes place at Tuluwat Island, Humboldt Bay in northern California. * February 26, February 27 – Abraham Lincoln makes his Cooper Union speech, Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron Theory
The electron (, or in nuclear reactions) is a subatomic particle with a negative one elementary electric charge. It is a fundamental particle that comprises the ordinary matter that makes up the universe, along with up and down quarks. Electrons are extremely lightweight particles that orbit the positively charged nucleus of atoms. Their negative charge is balanced by the positive charge of protons in the nucleus, giving atoms their overall neutral charge. Ordinary matter is composed of atoms, each consisting of a positively charged nucleus surrounded by a number of orbiting electrons equal to the number of protons. The configuration and energy levels of these orbiting electrons determine the chemical properties of an atom. Electrons are bound to the nucleus to different degrees. The outermost or valence electrons are the least tightly bound and are responsible for the formation of chemical bonds between atoms to create molecules and crystals. These valence electrons also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxwell's Equations
Maxwell's equations, or Maxwell–Heaviside equations, are a set of coupled partial differential equations that, together with the Lorentz force law, form the foundation of classical electromagnetism, classical optics, Electrical network, electric and Magnetic circuit, magnetic circuits. The equations provide a mathematical model for electric, optical, and radio technologies, such as power generation, electric motors, wireless communication, lenses, radar, etc. They describe how electric field, electric and magnetic fields are generated by electric charge, charges, electric current, currents, and changes of the fields.''Electric'' and ''magnetic'' fields, according to the theory of relativity, are the components of a single electromagnetic field. The equations are named after the physicist and mathematician James Clerk Maxwell, who, in 1861 and 1862, published an early form of the equations that included the Lorentz force law. Maxwell first used the equations to propose that ligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Drude
Paul Karl Ludwig Drude (; ; 12 July 1863 – 5 July 1906) was a German physicist specializing in optics. He was known for the Drude model. Biography Education Born in Braunschweig, Drude began his studies in mathematics at the University of Göttingen, but later changed his major to physics. His dissertation covering the reflection and diffraction of light in crystals was completed in 1887, under Woldemar Voigt. Drude graduated the year Heinrich Hertz began publishing his findings from his experiments on the electromagnetic theories of James Clerk Maxwell. Thus Drude began his professional career at the time Maxwell's theories were being introduced into Germany. Career In 1894, Drude became an extraordinarius professor at the University of Leipzig; in the same year he married Emilie Regelsberger, daughter of a Göttingen lawyer. They had four children. In 1900, he became the editor for ''Annalen der Physik'', the most respected physics journal at that time. From 1901 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
