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1857 In Science
The year 1857 in science and technology involved some significant events, listed below. Astronomy * Peter Andreas Hansen's ''Tables of the Moon'' are published in London. Biology * Rev. M. J. Berkeley publishes ''Introduction to Cryptogamic Botany''. Chemistry * Robert Bunsen invents apparatus for measuring effusion. * August Kekulé proposes that carbon is tetravalent, or forms exactly four chemical bonds. * Carl Wilhelm Siemens patents the Siemens cycle. Earth sciences * January 9 – The 7.9 Fort Tejon earthquake shakes Central and Southern California with a maximum Mercalli intensity of IX (''Violent''). The event, which involves slip on the southern segment of the San Andreas Fault, leaves two people dead. * Friedrich Albert Fallou publishes ''Anfangsgründe der Bodenkunde'' irst Principles of Soil Science laying the foundations for the modern study of soil science. Exploration * May 16 – The British North American Exploring Expedition, led by Irish geographer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Andreas Fault
The San Andreas Fault is a continental Fault (geology)#Strike-slip faults, right-lateral strike-slip transform fault that extends roughly through the U.S. state of California. It forms part of the tectonics, tectonic boundary between the Pacific plate and the North American plate. Traditionally, for scientific purposes, the fault has been classified into three main segments (northern, central, and southern), each with different characteristics and a different degree of earthquake risk. The average slip rate along the entire fault ranges from per year. In the north, the fault terminates offshore near Eureka, California, at the Mendocino triple junction, where three tectonic plates meet. The Cascadia subduction zone intersects the San Andreas fault at the Mendocino triple junction. It has been hypothesized that a major earthquake along the Cascadia subduction zone could trigger a rupture along the San Andreas Fault. In the south, the fault terminates near Bombay Beach, Califor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icosian Game
The icosian game is a mathematical game invented in 1856 by Irish mathematician William Rowan Hamilton. It involves finding a Hamiltonian cycle on a dodecahedron, a polygon using edges of the dodecahedron that passes through all its vertex (geometry), vertices. Hamilton's invention of the game came from his studies of symmetry, and from his invention of the icosian calculus, a mathematical system describing the symmetries of the dodecahedron. Hamilton sold his work to a game manufacturing company, and it was marketed both in the UK and Europe, but it was too easy to become commercially successful. Only a small number of copies of it are known to survive in museums. Although Hamilton was not the first to study Hamiltonian cycles, his work on this game became the origin of the name of Hamiltonian cycles. Several works of recreational mathematics studied his game. Other puzzles based on Hamiltonian cycles are sold as smartphone apps, and mathematicians continue to study combinatori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Rowan Hamilton
Sir William Rowan Hamilton (4 August 1805 – 2 September 1865) was an Irish astronomer, mathematician, and physicist who made numerous major contributions to abstract algebra, classical mechanics, and optics. His theoretical works and mathematical equations are considered fundamental to modern theoretical physics, particularly Hamiltonian mechanics, his reformulation of Lagrangian mechanics. His career included the analysis of geometrical optics, Fourier analysis, and quaternions, the last of which made him one of the founders of modern linear algebra. Hamilton was Andrews Professor of Astronomy at Trinity College Dublin. He was also the third director of Dunsink Observatory from 1827 to 1865. The Hamilton Institute at Maynooth University is named after him. Early life Hamilton was the fourth of nine children born to Sarah Hutton (1780–1817) and Archibald Hamilton (1778–1819), who lived in Dublin at 29 Dominick Street, Dublin, Dominick Street, later renumbered to 36. Ham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locomotion No
Locomotion means the act or ability of something to transport or move itself from place to place. Locomotion may refer to: Motion * Motion (physics) * Robot locomotion, of man-made devices By environment * Aquatic locomotion * Flight * Locomotion in space * Terrestrial locomotion Biological locomotion Animal locomotion * Animal locomotion ** Climbing ** Crawl (other) ** Flight *** Bird flight *** Bat flight *** Insect flight ** Jet propulsion ** Fin and flipper locomotion ** Fish locomotion (swimming, others) ** Gait analysis *** Horse gaits **** Trot (horse gait) ** Jumping ** Running ** Slithering, limbless terrestrial locomotion *** Snake locomotion ** Swimming ** Walking Fine and gross motor skills * Fine motor skills (smaller muscles; fine movements) * Gross motor skills (larger muscles; large movements) Microbial locomotion * Microswimmer * Protist locomotion, locomotion of unicellular eukaryotes * Bacterial motility Arts, entertainment, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stockton And Darlington Railway
The Stockton and Darlington Railway (S&DR) was a railway company that operated in north-east England from 1825 to 1863. The world's first public railway to use steam locomotives, its first line connected coal mining, collieries near with and in County Durham, and was officially opened on 27 September 1825. The movement of coal to ships rapidly became a lucrative business, and the line was soon extended to a at Middlesbrough. While coal waggons were hauled by steam locomotives from the start, passengers were carried in coaches drawn by horses until carriages hauled by steam locomotives were introduced in 1833. The S&DR was involved in building the East Coast Main Line between and Darlington, but its main expansion was at Middlesbrough Docks and west into Weardale and east to Redcar. It suffered severe financial difficulties at the end of the 1840s and was nearly taken over by the York, Newcastle and Berwick Railway, before the discovery of iron ore in Cleveland, Yorkshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an international border with the Mexico, Mexican state of Baja California to the south. With almost 40million residents across an area of , it is the List of states and territories of the United States by population, largest state by population and List of U.S. states and territories by area, third-largest by area. Prior to European colonization of the Americas, European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, following Mexican War of Independence, its successful war for independence, but Mexican Cession, was ceded to the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giant Sequoia
''Sequoiadendron giganteum'' (also known as the giant sequoia, giant redwood, Sierra redwood or Wellingtonia) is a species of coniferous tree, classified in the family Cupressaceae in the subfamily Sequoioideae. Giant sequoia specimens are the largest trees on Earth. They are native to the groves on the western slopes of the Sierra Nevada (U.S.), Sierra Nevada mountain range of California but have been introduced, planted, and grown around the world. The giant sequoia is listed as an endangered species by the International Union for Conservation of Nature, IUCN with fewer than 80,000 remaining in its native California. The tree was introduced to the U.K. in 1853, and by now might have 500,000 trees growing there where it is more commonly known as Wellingtonia after the Duke of Wellington. The giant sequoia grow to an average height of 50–85 m (164–279 ft) with trunk diameters ranging from 6–8 m (20–26 ft). Record trees have been measured at 94.8 m (311&nbs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mariposa Grove
Mariposa Grove is a sequoia grove located near Wawona, California, United States, in the southernmost part of Yosemite National Park. It is the largest grove of giant sequoias in the park, with several hundred mature specimens. Two of its trees are among the 30 largest giant sequoias in the world. The grove attracts about one million visitors annually. The Mariposa Grove was first visited by non-native people in 1857 when Galen Clark and Milton Mann found it. They named the grove after Mariposa County, California, where the grove is located. Abraham Lincoln signed an Act of Congress on June 30, 1864, ceding Mariposa Grove and Yosemite Valley to the state of California. Criticism of stewardship over the land led to the state's returning the grove to federal control with the establishment of Yosemite National Park. The grove closed on July 6, 2015, for a restoration project and reopened on June 15, 2018. The Mariposa Grove Museum is listed on the National Register of Historic Pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galen Clark
Galen Clark (March 28, 1814 – March 24, 1910) was a British North American-born American conservationist and writer. He is known as the first European American to discover the Mariposa Grove of Giant Sequoia trees, and is notable for his role in gaining legislation to protect it and the Yosemite area, and for 24 years serving as Guardian of Yosemite National Park. Biography Galen Clark was born in Shipton, Lower Canada in 1814. He joined the westward migration as a youth and moved to Waterloo, Missouri in 1836. In Missouri, he met Rebecca McCoy, and they married in 1839. They had five children: Elvira Missouri Clark (1840–1912), Joseph Locke Clark (1842–1862), Mary Ann Clark (1844–1919), Calen Alonzo Clark (1847–1873), and Solon McCoy Clark (1848–1857). Only two of them survived until after their parents' deaths: Elvira Clark, who married and became a doctor in Oakland, California; and their other daughter, Mary Ann Clark, who married John T. Regan of Springfiel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Canada
Western Canada, also referred to as the Western provinces, Canadian West, or Western provinces of Canada, and commonly known within Canada as the West, is a list of regions of Canada, Canadian region that includes the four western provinces and territories of Canada, provinces just north of the Canada–United States border namely (from west to east) British Columbia, Alberta, Saskatchewan and Manitoba. The people of the region are often referred to as "Western Canadians" or "Westerners", and though diverse from province to province are largely seen as being collectively distinct from other Canadians along cultural, linguistic, socioeconomic, geographic and political lines. They account for approximately 32% of Canada's total population. The region is further subdivided geographically and culturally between British Columbia, which is mostly on the western side of the Canadian Rockies and often referred to as the "British Columbia Coast, west coast", and the "Prairie Provinces" (c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Palliser
John Palliser (29 January 1817 – 18 August 1887) was an Irish-born geographer and explorer. Following his service in the Waterford Militia and hunting excursions to the North American prairies, he led the British North American Exploring Expedition which investigated the geography, climate and ecology of what would later become western Canada. Biography Born in Dublin, Ireland, he was the son of Colonel Wray Palliser and a brother of Major Sir William Palliser (1830–1882), all descendants of Dr William Palliser, Archbishop of Cashel (1644–1726). From 1839 to 1863, Palliser served in the Waterford Militia, eventually with the rank of captain. He was also appointed High Sheriff of County Waterford for 1844–45. During a hunting expedition in British North America in 1847, Palliser wrote ''Solitary Rambles and Adventures of a Hunter in the Prairies'', first published in 1853. He travelled back to British North America as leader of the British North American Explorin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
