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C. F. Varley
Cromwell Fleetwood Varley, FRSA (6 April 1828 – 2 September 1883) was an English engineer, particularly associated with the development of the electric telegraph and the transatlantic telegraph cable. He also took interest in the claims of parapsychology and spiritualism. Family Born in Kentish Town, London, Cromwell Fleetwood Varley was the second of ten children. His father was Cornelius Varley, an active member of the Society of Arts (now the Royal Society of Arts), best known for his scientific research. His mother was the former Elizabeth Livermore Straker. C.F. Varley's brothers, Samuel Alfred Varley and Frederick Henry Varley, were also improvers and inventors in connection with telegraphy. The family believed themselves the descendants of Oliver Cromwell and General Charles Fleetwood, hence his given names. The family were Sandemanians, part of the same congregation as Michael Faraday, but Varley did not continue his association with the sect into adult life. A firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FRSA
The Royal Society for the Encouragement of Arts, Manufactures and Commerce (RSA), also known as the Royal Society of Arts, is a London-based organisation committed to finding practical solutions to social challenges. The RSA acronym is used more frequently than the full legal name (The Royal Society for the Encouragement of Arts, Manufactures and Commerce). The RSA's mission expressed in the founding charter was to "embolden enterprise, enlarge science, refine art, improve our manufacturers and extend our commerce", but also of the need to alleviate poverty and secure full employment. On its website, the RSA characterises itself as "an enlightenment organisation committed to finding innovative practical solutions to today's social challenges". Notable past fellows (before 1914, members) include Charles Dickens, Benjamin Franklin, Stephen Hawking, Karl Marx, Adam Smith, Marie Curie, Nelson Mandela, David Attenborough, Judi Dench, William Hogarth, John Diefenbaker, and Tim Be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildman Whitehouse
Edward Orange Wildman Whitehouse (1 October 1816 – 26 January 1890) was an English surgeon by profession and an electrical experimenter by avocation. He was recruited by entrepreneur Cyrus West Field as Chief Electrician to work on the pioneering endeavour to lay the first transatlantic telegraph cable for the Atlantic Telegraph Company between western Ireland to eastern Newfoundland. This pioneering project of the Victorian era began in 1854 and was completed in 1858; however the cable functioned for only three weeks. While Whitehouse sent the first telegraph communications on 16 August 1858 to the United States of America, he was ultimately held responsible for the undersea cable failure after he applied higher voltages in an effort to boost declining signals. Life Born in Liverpool to a merchant, he qualified as a member of the Royal College of Surgeons in 1840 and established a successful practice in Brighton.Hunt (2004) First transatlantic cable In the 1850s, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forres
Forres (; gd, Farrais) is a town and former royal burgh in the north of Scotland on the Moray coast, approximately northeast of Inverness and west of Elgin. Forres has been a winner of the Scotland in Bloom award on several occasions. There are many geographical and historical attractions nearby such as the River Findhorn, and there are also classical, historical artifacts and monuments within the town itself, such as Forres Tolbooth and Nelson's Tower. Brodie Castle, the home of the Brodie Clan, lies to the west of the town, close to the A96. A list of suburbs in the town of Forres contains: Brodie, Dalvey, Mundole and Springdale. Pre-history and archaeology Between 2002 and 2013 some 70 hectares of land was investigated by archaeologists in advance of a proposed residential development on the southern fringes of the town. They found an extensive Iron Age settlement and evidence that people lived in the area from the Neolithic ( radiocarbon dates from the 4th to the mid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perdicaris Affair
The Perdicaris affair, also known as the Perdicaris incident, refers to the kidnapping of Greek-American Ion Hanford Perdicaris (1840–1925) and his stepson, Cromwell Varley, a British subject, by Ahmed al-Raisuni and his bandits on 18 May 1904 in Tangier, Morocco. Raisuni, leader of several hill tribes, demanded a ransom of $70,000, safe conduct, and control of two of Morocco's wealthiest districts from the Sultan of Morocco Abd al-Aziz. During lengthy negotiations, he increased his demands to control of six districts. The historical importance of the affair lay not in the kidnapping itself but in the concentration of naval power in Tangier and what it meant for the politics of gunboat diplomacy. Born in Greece in 1840 to the American ambassador and his wife, Perdicaris grew up mostly in New Jersey in the United States and was an American citizen. He had been living in Tangier since the 1870s. President Theodore Roosevelt felt obliged to react on his behalf in Morocco. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mulai Ahmed Er Raisuni
Mulai Ahmed er Raisuni (Arabic: "مولاي أحمد الريسوني", known as Raisuli to most English speakers, also Raissoulli, Rais Uli, and Raysuni; 1871 – April 1925) was a Sharif (descendant of the Islamic prophet Muhammad), and a leader of the Jebala tribal confederacy in Morocco at the turn of the 20th century. While he was regarded by foreigners and the Moroccan government as a brigand, some Moroccans, especially among the Jebala, considered him a heroic figure, fighting a repressive, corrupt government, while others considered him a thief. Historian David S. Woolman referred to Raisuni as "a combination Robin Hood, feudal baron, and tyrannical bandit." He was considered by many as "The last of the Barbary Pirates" though Barbary Coast piracy had ended by the middle of the 19th century. On the other hand, according to Douglas Porch, an American historian, Raisuni was part of the rule rather than the exception in that every successful Moroccan politician at the time com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ion Perdicaris
Ion Hanford Perdicaris (April 1, 1840 – May 31, 1925) was an author, professor, lawyer, painter, and playwright. He was a humanitarian and human rights activist. He fought for the rights of Moors, Arabs and slaves. He was active in the anti-slave movement in the United States and abroad namely in Morocco. Ion fought to change the Protégé system in Morocco. Ion became an international celebrity because of the Perdicaris Incident. Born in Athens, Greece, he grew up in Trenton. He briefly attended Harvard University before traveling to Europe to attend school. He fled the United States during the American Civil War due to his ties to South Carolina and his mother's prominent family. Perdicaris renounced his American citizenship and tried to become a Greek citizen in an unsuccessful effort to avoid the confiscation of the Charleston Gas Light Company. Ion traveled back and forth to London from the United States. He became an international correspondent for ''The G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elementary Particle
In particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. Particles currently thought to be elementary include electrons, the fundamental fermions ( quarks, leptons, antiquarks, and antileptons, which generally are matter particles and antimatter particles), as well as the fundamental bosons ( gauge bosons and the Higgs boson), which generally are force particles that mediate interactions among fermions. A particle containing two or more elementary particles is a composite particle. Ordinary matter is composed of atoms, once presumed to be elementary particles – ''atomos'' meaning "unable to be cut" in Greek – although the atom's existence remained controversial until about 1905, as some leading physicists regarded molecules as mathematical illusions, and matter as ultimately composed of energy. Subatomic constituents of the atom were first identified in the early 1930s; the electron and the pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cathode Ray
Cathode rays or electron beam (e-beam) are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode (the electrode connected to the negative terminal of the voltage supply). They were first observed in 1859 by German physicist Julius Plücker and Johann Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein ''Kathodenstrahlen'', or cathode rays. In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the ''electron''. Cathode-ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to render an image on a screen. Description Cathode rays are so named because they are emitted by the negative electrode, or cathode, in a vacuum tube. To release electrons into the tube, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Paper
: ''For a broader class of literature, see Academic publishing.'' Scientific literature comprises scholarly publications that report original empirical and theoretical work in the natural and social sciences. Within an academic field, scientific literature is often referred to as the literature. Academic publishing is the process of contributing the results of one's research into the literature, which often requires a peer-review process. Original scientific research published for the first time in scientific journals is called the primary literature. Patents and technical reports, for minor research results and engineering and design work (including computer software), can also be considered primary literature. Secondary sources include review articles (which summarize the findings of published studies to highlight advances and new lines of research) and books (for large projects or broad arguments, including compilations of articles). Tertiary sources might include encycl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galvanometer
A galvanometer is an electromechanical measuring instrument for electric current. Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely. A galvanometer works by deflecting a pointer in response to an electric current flowing through a coil in a constant magnetic field. Galvanometers can be thought of as a kind of actuator. Galvanometers came from the observation, first noted by Hans Christian Ørsted in 1820, that a magnetic compass's needle deflects when near a wire having electric current. They were the first instruments used to detect and measure small amounts of current. André-Marie Ampère, who gave mathematical expression to Ørsted's discovery, named the instrument after the Italian electricity researcher Luigi Galvani, who in 1791 discovered the principle of the frog galvanoscope – that electric current would make the legs of a dead frog jerk. Galvanometers have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Crookes
Sir William Crookes (; 17 June 1832 – 4 April 1919) was a British chemist and physicist who attended the Royal College of Chemistry, now part of Imperial College London, and worked on spectroscopy. He was a pioneer of vacuum tubes, inventing the Crookes tube which was made in 1875. This was a foundational discovery that eventually changed the whole of chemistry and physics. He is credited with discovering the element thallium, announced in 1861, with the help of spectroscopy. He was also the first to describe the spectrum of terrestrial helium, in 1865. Crookes was the inventor of the Crookes radiometer but did not discern the true explanation of the phenomenon he detected. Crookes also invented a 100% ultraviolet blocking sunglass lens. For a time, he was interested in spiritualism and became president of the Society for Psychical Research. Biography Crookes' life was one of unbroken scientific activity that extended over sixty-seven years. He was considered remarkable ... [...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 phenomena, and usually frame their understanding in mathematical terms. Physicists work across a wide range of research fields, spanning all length scales: from sub-atomic and particle physics, through biological physics, to cosmological length scales encompassing the universe as a whole. The field generally includes two types of physicists: experimental physicists who specialize in the observation of natural phenomena and the development and analysis of experiments, and theoretical physicists who specialize in mathematical modeling of physical systems to rationalize, explain and predict natural phenomena. Physicists can apply their knowledge towards solving practical problems or to developing new technologies (also known as app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
