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1841 In Science
The year 1841 in science and technology involved some significant events, listed below. Biology * Rev. Miles Joseph Berkeley demonstrates that '' Phytophthora infestans'' (potato blight) is a fungal infection. * Royal Botanic Gardens, Kew, first open to the public and William Hooker appointed director. * John Gould begins publication of ''A Monograph of the Macropodidae, or Family of Kangaroos''. Chemistry * Theobromine is first discovered in cacao beans by Russian chemist Alexander Woskresensky. * Uranium is first isolated, by Eugène-Melchior Péligot. * Chemical Society of London founded by Thomas Graham. * Reinsch test for heavy metals discovered by Hugo Reinsch. Exploration * January 27 – The active volcano Mount Erebus in Antarctica is discovered and named by James Clark Ross. * January 28 – Ross discovers the "Victoria Barrier", later known as the Ross Ice Shelf. * Ross additionally discovers the Ross Sea, Victoria Land and Mount Terror. Geology * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science
Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old. The earliest written records in the history of science come from Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE. Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of classical antiquity, whereby formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages, but was preserved in the Muslim world during the Islamic Golden Age and later by the efforts of Byzantine Greek scholars who brought Greek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Erebus
Mount Erebus () is the second-highest volcano in Antarctica (after Mount Sidley), the highest active volcano in Antarctica, and the southernmost active volcano on Earth. It is the sixth-highest ultra mountain on the continent. With a summit elevation of , it is located in the Ross Dependency on Ross Island, which is also home to three inactive volcanoes: Mount Terror, Mount Bird, and Mount Terra Nova. The volcano has been active since about 1.3 million years ago and has a long-lived lava lake in its inner summit crater that has been present since at least the early 1970s. The volcano was the site of the Air New Zealand Flight 901 accident, which occurred in November 1979. Geology and volcanology Mount Erebus is the world's southernmost active volcano. It is the current eruptive centre of the Erebus hotspot. The summit contains a persistent convecting phonolitic lava lake, one of five long-lasting lava lakes on Earth. Characteristic eruptive activity consists of Str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Lafontaine
Charles Léonard Lafontaine (27 March 1803 – 13 August 1892) was a celebrated French " public magnetic demonstrator", who also "had an interest in animal magnetism as an agent for curing or alleviating illnesses". Family Charles Lafontaine was born in Vendôme, Loir-et-Cher, France, on 27 March 1803. He was related to the famous fabulist, Jean de La Fontaine (1621-1695); and, belonging to a theatrical family, he was involved with the theatre from an early age. He died in Geneva, Switzerland, on 13 August 1892. Appearance At 5'9" (175 cm) he was of medium height. His dark hair was brushed forward, his expression "rather austere, perhaps thoughtful", and he had a "prodigious" beard. Given the English fashion of the day for a clean-shaven face, Lafontaine’s beard was a subject of some considerable notoriety when he arrived in England — Spencer Timothy Hall's description of Lafontaine at a ''conversazione'' in 1841 is typical: Richard Harte, former journalist with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Magnetism
Animal magnetism, also known as mesmerism, was a protoscientific theory developed by German doctor Franz Mesmer in the 18th century in relation to what he claimed to be an invisible natural force (''Lebensmagnetismus'') possessed by all living things, including humans, animals, and vegetables. He claimed that the force could have physical effects, including healing. He tried persistently, without success, to achieve a wider scientific recognition of his ideas.Wolfart, Karl Christian; Friedrich Anton Mesmer. ''Mesmerismus: Oder, System der Wechselwirkungen, Theorie und Anwendung des thierischen Magnetismus als die allgemeine Heilkunde zur Erhaltung des Menschen'' (in German, facsimile of the 1811 edition). Cambridge University Press, 2011. . Foreword. The vitalist theory attracted numerous followers in Europe and the United States and was popular into the 19th century. Practitioners were often known as magnetizers rather than mesmerists. It had an important influence in medici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Braid (surgeon)
James Braid (19 June 1795 – 25 March 1860) was a Scottish surgeon, natural philosopher, and "gentleman scientist". He was a significant innovator in the treatment of clubfoot, spinal curvature, knock-knees, bandy legs, and squint; a significant pioneer of hypnotism and hypnotherapy, and an important and influential pioneer in the adoption of both hypnotic anaesthesia and chemical anaesthesia. He is regarded by some, such as Kroger (2008, p. 3), as the "Father of Modern Hypnotism"; however, in relation to the issue of there being significant connections between Braid's "hypnotism" and "modern hypnotism" (as practised), let alone "identity", Weitzenhoffer (2000, p. 3) urges the utmost caution in making any such assumption: Also, in relation to the clinical application of "hypnotism", Early life Braid was the third son, and the seventh and youngest child, of James Braid (c. 1761–184?) and Anne Suttie (c. 1761–?). He was born at Ryelaw House, in the Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Baptiste Élie De Beaumont
Jean-Baptiste Armand Louis Léonce Élie de Beaumont (25 September 1798 – 21 September 1874) was a French geologist. Biography Élie de Beaumont was born at Canon, in Calvados. He was educated at the Lycee Henri IV where he took the first prize in mathematics and physics at the École polytechnique, where he stood first at the exit examination in 1819; and at the École des mines (1819–1822), where he began to show a decided preference for the science with which his name is associated. In 1823 he was selected along with Dufrénoy by Brochant de Villiers, the professor of geology in the École des Mines, to accompany him on a scientific tour to England and Scotland, in order to inspect the mining and metallurgical establishments of the country, and to study the principles on which George Bellas Greenough's geological map of England (1820) had been prepared, with a view to the construction of a similar map of France. In 1835 he was appointed professor of geology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ours-Pierre-Armand Petit-Dufrénoy
Ours-Pierre-Armand Petit-Dufrénoy (5 September 1792 – 20 March 1857) was a French geologist and mineralogist. Life He was born at Sevran, in the ''département'' of Seine-et-Oise. After leaving the Imperial Lyceum in 1811, he studied until 1813 at the École Polytechnique, and then entered the Corps des mines. He subsequently assisted in the management of the École des Mines, of which he was professor of mineralogy and afterwards director. He was also professor of geology at the École des Ponts et Chaussées. In conjunction with Élie de Beaumont in 1841 he published a great geological map of France, the result of investigations carried on during thirteen years (1823-1836). Five years (1836-1841) were spent in writing the text to accompany the map, the publication of the work with two quarto volumes of text extending from 1841-1848; a third volume was issued in 1873. The two authors had already together published ''Voyage Métallurgique en Angleterre'' (1827, 2nd ed. 1837- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Map
A geologic map or geological map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols. Bedding planes and structural features such as faults, folds, are shown with strike and dip or trend and plunge symbols which give three-dimensional orientations features. Stratigraphic contour lines may be used to illustrate the surface of a selected stratum illustrating the subsurface topographic trends of the strata. Isopach maps detail the variations in thickness of stratigraphic units. It is not always possible to properly show this when the strata are extremely fractured, mixed, in some discontinuities, or where they are otherwise disturbed. Symbols Lithologies Rock units are typically represented by colors. Instead of (or in addition to) colors, certain symbols can be used. Different geologic mapping agencies and authorities have different standards for the colors and symbols to be used for rocks of diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hugh Miller
Hugh Miller (10 October 1802 – 23/24 December 1856) was a self-taught Scottish geologist and writer, folklorist and an evangelical Christian. Life and work Miller was born in Cromarty, the first of three children of Harriet Wright (''bap''. 1780, ''d''. 1863) and Hugh Miller (''bap''. 1754, ''d''. 1807), a shipmaster in the coasting trade. Both parents were from trading and artisan families in Cromarty. His father died in a shipwreck in 1807, and he was brought up by his mother and uncles. He was educated in a parish school where he reportedly showed a love of reading. It was at this school that Miller was involved in an altercation with a classmate in which he stabbed his peer's thigh. Miller was subsequently expelled from the school following an unrelated incident. At 17 he was apprenticed to a stonemason, and his work in quarries, together with walks along the local shoreline, led him to the study of geology. In 1829 he published a volume of poems, and soon afterwards ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Terror (Antarctica)
Mount Terror is a large shield volcano that forms the eastern part of Ross Island, Antarctica. It has numerous cinder cones and domes on the flanks of the shield and is mostly under snow and ice. It is the second largest of the four volcanoes that make up Ross Island and is somewhat overshadowed by its neighbour, Mount Erebus, to the west. Mount Terror was named in 1841 by Sir James Clark Ross for his second ship, HMS ''Terror''. The captain of ''Terror'' was Francis Crozier, a close friend of Ross for whom the nearby Cape Crozier is named. Geography The rocks at the summit have not been studied, but rocks from the lower areas range from 0.82 to 1.75 million years old, and Mount Terror shows no signs of more recent volcanic activity. The first ascent of Mt. Terror was made by a New Zealand party in 1959. Terror Point (), located just below Mt. Terror, is the eastern limit of Fog Bay, WNW of Cape MacKay on Ross Island. The name was first used by members of the British Nationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria Land
Victoria Land is a region in eastern Antarctica which fronts the western side of the Ross Sea and the Ross Ice Shelf, extending southward from about 70°30'S to 78°00'S, and westward from the Ross Sea to the edge of the Antarctic Plateau. It was discovered by Captain James Clark Ross in January 1841 and named after Queen Victoria. The rocky promontory of Minna Bluff is often regarded as the southernmost point of Victoria Land, and separates the Scott Coast to the north from the Hillary Coast of the Ross Dependency to the south. The region includes ranges of the Transantarctic Mountains and the McMurdo Dry Valleys (the highest point being Mount Abbott in the Northern Foothills), and the flatlands known as the Labyrinth. The Mount Melbourne is an active volcano in Victoria Land. Early explorers of Victoria Land include James Clark Ross and Douglas Mawson. In 1979, scientists discovered a group of 309 meteorites in Antarctica, some of which were found near the Allan Hills in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ross Sea
The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on Earth. It derives its name from the British explorer James Clark Ross who visited this area in 1841. To the west of the sea lies Ross Island and Victoria Land, to the east Roosevelt Island and Edward VII Peninsula in Marie Byrd Land, while the southernmost part is covered by the Ross Ice Shelf, and is about from the South Pole. Its boundaries and area have been defined by the New Zealand National Institute of Water and Atmospheric Research as having an area of . The circulation of the Ross Sea is dominated by a wind-driven ocean gyre and the flow is strongly influenced by three submarine ridges that run from southwest to northeast. The circumpolar deep water current is a relatively warm, salty and nutrient-rich water mass that flows onto the continental shelf at certain locations. The Ross Sea is covered with ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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