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Lorenz Magaard
Lorenz Magaard (May 21, 1934 – July 1, 2020) was a German-American mathematician and oceanographer. He made essential contributions to the theory of ocean waves and earned particular credit for organizing education and research. Life Born in Germany, Magaard attended school in Flensburg from 1944 to 1955 and then studied mathematics and physics at Kiel University. He received the degrees of Diplom in 1961 and Dr. rer. nat. in 1963 at this university. He joined the Institute of Marine Research at Kiel University as research scientist in 1961, as lecturer (German: ''dozent'') from 1969 and as Professor of Oceanography from 1972. He moved to the University of Hawaiʻi at Mānoa, Honolulu, USA, in 1975 and has been a Professor of Oceanography there to this date, since 2009 as Emeritus Professor. Scientific work After the start in mathematics with a doctoral thesis on the embedding of Riemannian spaces into Einstein spaces and conformally- euclidean spaces, the theory of ocea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceanography
Oceanography (), also known as oceanology and ocean science, is the scientific study of the oceans. It is an Earth science, which covers a wide range of topics, including ecosystem dynamics; ocean currents, Wind wave, waves, and geophysical fluid dynamics; plate tectonics and the geology of the sea floor; and fluxes of various chemical substances and physical properties within the ocean and across its boundaries. These diverse topics reflect multiple disciplines that oceanographers utilize to glean further knowledge of the world ocean, including astronomy, biology, chemistry, climatology, geography, geology, hydrology, meteorology and physics. Paleoceanography studies the history of the oceans in the geologic past. An oceanographer is a person who studies many matters concerned with oceans, including marine geology, physics, chemistry and biology. History Early history Humans first acquired knowledge of the waves and currents of the seas and oceans in pre-historic times. Obser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tide
Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tables can be used for any given locale to find the predicted times and amplitude (or "tidal range"). The predictions are influenced by many factors including the alignment of the Sun and Moon, the phase and amplitude of the tide (pattern of tides in the deep ocean), the amphidromic systems of the oceans, and the shape of the coastline and near-shore bathymetry (see '' Timing''). They are however only predictions, the actual time and height of the tide is affected by wind and atmospheric pressure. Many shorelines experience semi-diurnal tides—two nearly equal high and low tides each day. Other locations have a diurnal tide—one high and low tide each day. A "mixed tide"—two uneven magnitude tides a day—is a third regular category. Tides va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emigrants From West Germany To The United States
Emigration is the act of leaving a resident country or place of residence with the intent to settle elsewhere (to permanently leave a country). Conversely, immigration describes the movement of people into one country from another (to permanently move to a country). A migrant ''emigrates'' from their old country, and ''immigrates'' to their new country. Thus, both emigration and immigration describe migration, but from different countries' perspectives. Demographers examine push and pull factors for people to be pushed out of one place and attracted to another. There can be a desire to escape negative circumstances such as shortages of land or jobs, or unfair treatment. People can be pulled to the opportunities available elsewhere. Fleeing from oppressive conditions, being a refugee and Asylum seeker, seeking asylum to get Refugee#Refugee status, refugee status in a foreign country, may lead to permanent emigration. Forced displacement refers to groups that are forced to aban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Oceanographers
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the " United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label previously known as Def American * American University, in Washington, D.C. Sports teams Soc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Oceanographers
German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Germanic peoples (Roman times) * German language **any of the Germanic languages * 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 (other) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2020 Deaths
This is a list of deaths of notable people, organised by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked here. 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 See also * Lists of deaths by day * Deaths by year {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1934 Births
Events January–February * January 1 – The International Telecommunication Union, a specialist agency of the League of Nations, is established. * January 15 – The 8.0 1934 Nepal–Bihar earthquake, Nepal–Bihar earthquake strikes Nepal and Bihar with a maximum Mercalli intensity scale, Mercalli intensity of XI (''Extreme''), killing an estimated 6,000–10,700 people. * January 26 – A 10-year German–Polish declaration of non-aggression is signed by Nazi Germany and the Second Polish Republic. * January 30 ** In Nazi Germany, the political power of federal states such as Prussia is substantially abolished, by the "Law on the Reconstruction of the Reich" (''Gesetz über den Neuaufbau des Reiches''). ** Franklin D. Roosevelt, President of the United States, signs the Gold Reserve Act: all gold held in the Federal Reserve is to be surrendered to the United States Department of the Treasury; immediately following, the President raises the statutory gold price from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campbell's Theorem (geometry)
Campbell's theorem, named after John Edward Campbell, also known as Campbell’s embedding theorem and the Campbell-Magaard theorem, is a mathematical theorem guaranteeing that any n-dimensional Riemannian manifold can be locally embedded in an (''n'' + 1)-dimensional Ricci-flat Riemannian manifold. Statement Campbell's theorem states that any ''n''-dimensional Riemannian manifold can be embedded locally in an (''n'' + 1)-manifold with a Ricci curvature of ''R''a'' ''b'' = 0. The theorem also states, in similar form, that an ''n''-dimensional pseudo-Riemannian manifold can be both locally and isometrically embedded in an ''n''(''n'' + 1)/2-pseudo-Euclidean space. Applications Campbell’s theorem can be used to produce the embedding of numerous 4-dimensional spacetimes in 5-dimensional A five-dimensional space is a space with five dimensions. In mathematics, a sequence of ''N'' numbers can represent a location in an ''N''- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Technology Society
The Marine Technology Society (MTS) is a professional society that serves the international community of approximately 3,800 ocean engineers, technologists, policy-makers, and educators. The goal of the society, which was founded in 1963, is to promote awareness, understanding, advancement and application of marine technology. The association is based in Washington, District of Columbia, United States. Former executive directors include Martin Finnerty, Judith T. Krauthamer and Richard Lawson. The society consists of 29 technical disciplines and presently has 17 sections, including overseas sections in Japan, Korea and Norway. In addition, MTS has 23 student sections at colleges and universities with related fields of study. The flagship publication of the society is the MTS Journal. The journal is published 6 times annually and primarily features themed issues consisting of invited papers. The journal has a current ISI Impact Factor of .763 MTS sponsors several conferences of n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liège
Liège ( , , ; wa, Lîdje ; nl, Luik ; german: Lüttich ) is a major city and municipality of Wallonia and the capital of the Belgian province of Liège. The city is situated in the valley of the Meuse, in the east of Belgium, not far from borders with the Netherlands ( Maastricht is about to the north) and with Germany (Aachen is about north-east). In Liège, the Meuse meets the river Ourthe. The city is part of the ''sillon industriel'', the former industrial backbone of Wallonia. It still is the principal economic and cultural centre of the region. The municipality consists of the following districts: Angleur, , Chênée, , Grivegnée, Jupille-sur-Meuse, Liège, Rocourt, and Wandre. In November 2012, Liège had 198,280 inhabitants. The metropolitan area, including the outer commuter zone, covers an area of 1,879 km2 (725 sq mi) and had a total population of 749,110 on 1 January 2008. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Hawaiʻi
The University of Hawaiʻi System, formally the University of Hawaiʻi and popularly known as UH, is a public college and university system that confers associate, bachelor's, master's, and doctoral degrees through three universities, seven community colleges, an employment training center, three university centers, four education centers and various other research facilities distributed across six islands throughout the state of Hawaii in the United States. All schools of the University of Hawaiʻi system are accredited by the Western Association of Schools and Colleges. The UH system's main administrative offices are located on the property of the University of Hawaiʻi at Mānoa in Honolulu CDP. History The present-day University of Hawai'i System was created in 1965 which combined the State of Hawai'i's technical and community colleges under one system within the former University of Hawai'i. Former University of Hawai'i The University of Hawai'i was created by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
