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English Wikipedia references for Du.edu 61-80 of 382
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Railway signalling
Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being guided by fixed rails, trains are uniquely susceptible to collision; furthermore, trains cannot stop quickly, and frequently operate at speeds that do not enable them to stop within sighting distance of the driver.
Railway_signalling
History of the United States (1865–1918)
Talk:History_of_the_United_States_(1865–1918)
Pottery
Talk:Pottery
Instrumental case
instrumental case (also called the eighth case) is a grammatical case used to indicate that a noun is the instrument or means by or with which the subject achieves or accomplishes an action. The noun may be either a physical object or an abstract concept.For example, in this Russian sentenceЯ написал письмо пером. (translit.
Instrumental_case
Gale Norton
Gale Ann Norton (born March 11, 1954) served as the 48th United States Secretary of the Interior from 2001 to 2006 under President George W. Bush. She was the first woman to hold the position.
Gale_Norton
Moritz von Jacobi
Moritz Hermann (Boris Semyonovich) von Jacobi () (September 21, 1801 March 10, 1874) was a Prussian engineer and physicist born in Potsdam. Jacobi worked mainly in Russia. He furthered progress in galvanoplastics, electric motors, and wire telegraphy.
Moritz_von_Jacobi
Internet access
Internet access refers to the means by which users connect to the Internet.
Internet_access
Hot air balloon
Talk:Hot_air_balloon
Sperm Whale
Sperm_Whale
Ouachita Mountains
The Ouachita Mountains are a mountain range located in west central Arkansas, southeastern Oklahoma and north-east Texas. The range's subterranean roots may extend as far as central Texas, or beyond it to the current location of the Marathon Uplift. Along with the Ozark Mountains, the Ouachita (pronounced , pseudophoneticallyU.S. Interior Highlands, the only major mountainous region between the Rocky Mountains and the Appalachian Mountains.
Ouachita_Mountains
Van der Pauw method
van der Pauw Method is a commonly used technique to measure the sheet resistance of a material. The Van der Pauw method is often used to measure the Hall effect, which characterises a sample of semiconductor material and can be successfully completed with a current source, voltmeter, and a magnet.
Van_der_Pauw_method
Coercivity
In materials science, the coercivity, also called the coercive field, of a ferromagnetic material is the intensity of the applied magnetic field required to reduce the magnetization of that material to zero after the magnetization of the sample has been driven to saturation. Coercivity is usually measured in oersted or ampere/meter units and is denoted HC.
Coercivity
Lowellian
User_talk:Lowellian
Alfred Vail
Alfred Lewis Vail (September 25, 1807, in Morristown, New Jersey – January 18, 1859) was a machinist and inventor. Vail was central, with Samuel F.B. Morse, in developing and commercializing the telegraph between 1837 and 1844. Vail and Morse were the first two telegraph operators on Morse's first experimental line between Washington, DC, and Baltimore, and Vail took charge of building and managing several early telegraph lines between 1845 and 1848.
Alfred_Vail
Epicyclic gearing
Talk:Epicyclic_gearing
Computer simulation
computer simulation, a computer model or a computational model is a computer program, or network of computers, that attempts to simulate an abstract model of a particular system. Computer simulations have become a useful part of mathematical modeling of many natural systems in physics (computational physics), chemistry and biology, human systems in economics, psychology, and social science and in the process of engineering new technology, to gain insight into the operation of those systems, or to observe their behavior.
Computer_simulation
Gas mantle
Gas_mantle
Bonin Islands
The Bonin Islands, known in Japan as the m are an archipelago of over 30 subtropical and tropical islands, some 1,000 km directly south of Tokyo, Japan. Administratively, they form one of the villages of Tokyo. The total area of the islands is 84 km², with a population of 2440 (2000 on Chichijima, and 440 on Hahajima, the only two inhabited islands).
Bonin_Islands
TRIAC
TRIAC, or TRIode for Alternating Current is an electronic component approximately equivalent to two silicon-controlled rectifiers (SCRs/thyristors) joined in inverse parallel (paralleled but with the polarity reversed) and with their gates connected together.
TRIAC
Sweatt v. Painter
Sweatt v. Painter, , was a U.S. Supreme Court case that successfully challenged the "separate but equal" doctrine of racial segregation established by the 1896 case Plessy v. Ferguson.The case involved a black man, Heman Marion Sweatt, who was refused admission to the University of Texas School of Law on the grounds that the Texas State Constitution prohibited integrated education.
Sweatt_v._Painter