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John S. Eastwood
John Samuel Eastwood (1857, in Minnesota – 1924, in California) was an American engineer who built the world's first reinforced concrete multiple-arch dam on bedrock foundation at Hume Lake, California, in 1908, and was one of California's pioneers of hydroelectric power production. Eastwood's papers are held at the Water Resources Collections and Archives, University of California, Riverside. Early life Born to Dutch parents in 1857 in Minnesota, Eastwood attended the University of Minnesota as a civil engineering student; prior to graduation in 1880 he headed west to work on railroad construction projects in the Pacific Northwest, including on the Northern Pacific Railroad. In 1883, he moved to Fresno, California and established an office as civil engineer and surveyor. He became Fresno's first City Engineer in 1885, but apparently was not well suited for office–bureaucratic life and soon resigned. For the remainder of his career he focused on work within the private ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minneapolis, Minnesota
Minneapolis is a city in Hennepin County, Minnesota, United States, and its county seat. With a population of 429,954 as of the 2020 United States census, 2020 census, it is the state's List of cities in Minnesota, most populous city. Located in the state's center near the eastern border, it occupies both banks of the Upper Mississippi River and adjoins Saint Paul, Minnesota, Saint Paul, the state capital of Minnesota. Minneapolis, Saint Paul, and the surrounding area are collectively known as the Minneapolis–Saint Paul, Twin Cities, a metropolitan area with 3.69 million residents. Minneapolis is built on an artesian aquifer on flat terrain and is known for cold, snowy winters and hot, humid summers. Nicknamed the "City of Lakes", Minneapolis is abundant in water, with list of lakes in Minneapolis, thirteen lakes, wetlands, the Mississippi River, creeks, and waterfalls. The city's public park system is connected by the Grand Rounds National Scenic Byway. Dakota people orig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surveyor (surveying)
Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial two-dimensional or three-dimensional positions of points and the distances and angles between them. These points are usually on the surface of the Earth, and they are often used to establish maps and boundaries for ownership, locations, such as the designated positions of structural components for construction or the surface location of subsurface features, or other purposes required by government or civil law, such as property sales. A professional in land surveying is called a land surveyor. Surveyors work with elements of geodesy, geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages, and the law. They use equipment, such as total stations, robotic total stations, theodolites, GNSS receivers, retroreflectors, 3D scanners, lidar sensors, radios, inclinometer, handheld tablets, optical and digital levels, subsurface loc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Bear Valley Arch Dam
Big or BIG may refer to: * Big, of great size or degree Film and television * ''Big'' (film), a 1988 fantasy-comedy film starring Tom Hanks * ''Big'', a 2023 Taiwanese children's film starring Van Fan and Chie Tanaka * ''Big!'', a Discovery Channel television show * ''Richard Hammond's Big'', a television show presented by Richard Hammond * ''Big'' (TV series), a 2012 South Korean TV series * "Big" (''My Hero''), a 2003 television episode * ''Banana Island Ghost'', a 2017 fantasy action comedy film Music * '' Big: the musical'', a 1996 musical based on the film * Big Records, a record label * ''Big!'' (Betty Who album) * ''Big'' (album), a 2007 album by Macy Gray * "Big" (Brassmunk song) * "Big" (Dead Letter Circus song) * "Big" (Fontaines D.C. song) * "Big" (Juice Wrld song) * "Big" (Sneaky Sound System song) * "Big" (Rita Ora and Imanbek song) * "Big" (Young M.A song) * "Big", a 1990 song by New Fast Automatic Daffodils * "Big", a 2021 song by Jade Eagleson from ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hume-Bennett Lumber Company
The Hume-Bennett Lumber Company was a logging operation in the Sequoia National Forest in the late 19th and early 20th centuries. The company and its predecessors were known for building the world's longest log flume and the John Samuel Eastwood#Multiple arch dams, first multiple-arch hydroelectric dam. However, the company also engaged in destructive clearcutting, clearcutting logging practices, cutting down 8,000 giant sequoias in Converse Basin Grove, Converse Basin in a decade-long event that has been described as "the greatest orgy of destructive lumbering in the history of the world." Public opposition of the company's actions helped mobilize support for the early Conservation in the United States, conservation movement, leading to the creation of Yosemite National Park, Yosemite, Sequoia National Park, Sequoia, and General Grant Grove, General Grant National Parks in the early 1880s. By the 1950s, almost all surviving sequoia groves were under public protection. Despite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panic Of 1907
The Panic of 1907, also known as the 1907 Bankers' Panic or Knickerbocker Crisis, was a financial crisis that took place in the United States over a three-week period starting in mid-October, when the New York Stock Exchange suddenly fell almost 50% from its peak the previous year. The panic occurred during a time of economic recession, and there were numerous bank run, runs affecting banks and trust company, trust companies. The 1907 panic eventually spread throughout the nation when many state and local banks and businesses entered bankruptcy. The primary causes of the run included a retraction of market liquidity by a number of New York City banks and a loss of confidence among depositors, exacerbated by unregulated side bets at bucket shop (stock market), bucket shops. The panic was triggered by the failed attempt in October 1907 to cornering the market, corner the market on stock of the United Copper, United Copper Company. When the bid failed, banks that had lent money to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hume
Hume most commonly refers to: * David Hume (1711–1776), Scottish philosopher Hume may also refer to: People * Hume (surname) * Hume (given name) * James Hume Nisbet (1849–1923), Scottish-born novelist and artist In fiction * Hume, the name of the human race in the Ivalice universe of the computer game series ''Final Fantasy'' * Desmond Hume, a fictional character on the television series ''Lost'' * Eleanor Hume, a character from the role-playing video game ''Tales of Berseria'' * Nick Hume, the protagonist of the 2007 film ''Death Sentence'' * Hobart Hume III, a fictional character on the television series ''Shining Time Station'' Places Australia * Hume, Australian Capital Territory, a suburb of Canberra * City of Hume, a municipality in northern Melbourne * Hume County, a cadastral division of New South Wales * Division of Hume, an electoral district in the Australian House of Representatives, in New South Wales * Hume (region), a region in northeastern Victori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry E
Henry may refer to: People and fictional characters * Henry (given name), including lists of people and fictional characters * Henry (surname) * Henry, a stage name of François-Louis Henry (1786–1855), French baritone Arts and entertainment * ''Henry'' (2011 film), a Canadian short film * ''Henry'' (2015 film), a virtual reality film * '' Henry: Portrait of a Serial Killer'', a 1986 American crime film * ''Henry'' (comics), an American comic strip created in 1932 by Carl Anderson * "Henry", a song by New Riders of the Purple Sage Places Antarctica * Henry Bay, Wilkes Land Australia * Henry River (New South Wales) * Henry River (Western Australia) Canada * Henry Lake (Vancouver Island), British Columbia * Henry Lake (Halifax County), Nova Scotia * Henry Lake (District of Chester), Nova Scotia New Zealand * Lake Henry (New Zealand) * Henry River (New Zealand) United States * Henry, Illinois * Henry, Indiana * Henry, Nebraska * Henry, South Dakota * Henry Count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Creek Hydroelectric Project
The Big Creek Hydroelectric Project is an extensive Hydroelectricity, hydroelectric power scheme on the upper San Joaquin River system, in the Sierra Nevada (U.S.), Sierra Nevada of central California. The project is owned and operated by Southern California Edison (SCE). The use and reuse of the waters of the San Joaquin River, its South Fork San Joaquin River, South Fork, and the namesake of the project, Big Creek (San Joaquin River), Big Creek – over a vertical drop of – have over the years inspired a nickname, "The Hardest Working Water in the World". The primary purpose of the project was to provide electric power for the fast-growing city of Los Angeles. California engineer John S. Eastwood was the principal designer of the system, which was initially funded and built by Henry E. Huntington's Pacific Light and Power Company (PL&P). Construction of the system's facilities started in 1911, and the first power was transmitted to Los Angeles in 1913. After SCE acquired PL& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Light And Power Company
Southern California Edison (SCE), the largest subsidiary of Edison International, is the primary electric utility company for much of Southern California. It provides 15 million people with electricity across a service territory of approximately 50,000 square miles. SCE owns all of its electrical transmission facilities and equipment. Deregulation of California's electricity market in the late 1990s forced the company to sell many of its power plants, though some were probably sold by choice. SCE retained its hydroelectric plants, totaling about 1,200 MW, and its 75% share of the 2,150-MW San Onofre Nuclear Generating Station. The plant, which hasn't produced power since 2012, is being decommissioned. In addition to its electric business, SCE operates the sole gas utility and water utility on Santa Catalina Island, under the names Catalina Island Gas Company and Catalina Island Water Company. History The origins of the company lie with the grand scheme of business magn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Joaquin River
The San Joaquin River ( ; ) is the longest river of Central California. The long river starts in the high Sierra Nevada and flows through the rich agricultural region of the northern San Joaquin Valley before reaching Suisun Bay, San Francisco Bay, and the Pacific Ocean. An important source of irrigation water as well as a wildlife corridor, the San Joaquin is among the most heavily dammed and diverted of California's rivers. People have inhabited the San Joaquin Valley for more than 8,000 years, and it was one of the major population centers of pre-Columbian California. Starting in the late 18th century, successive waves of explorers then settlers, mainly Spanish and American, emigrated to the San Joaquin basin. When Spain colonized the area, they sent soldiers from Mexico, who were usually of mixed native Mexican and Spanish birth, led by Spanish officers. Franciscan missionaries from Spain came with expeditions to evangelize the natives by teaching them about the Catholi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbine
A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced can be used for generating electrical power when combined with a generator.Munson, Bruce Roy, T. H. Okiishi, and Wade W. Huebsch. "Turbomachines." Fundamentals of Fluid Mechanics. 6th ed. Hoboken, NJ: J. Wiley & Sons, 2009. Print. A turbine is a turbomachine with at least one moving part called a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Modern steam turbines frequently employ both reaction and impulse in the same unit, typically varying the degree of reaction and impulse from the blade root to its periphery. History Hero of Alexandria demonstrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Transmission
Power transmission is the movement of energy from its place of generation to a location where it is applied to perform useful Mechanical work, work. Power (physics), Power is defined formally as units of energy per unit time. In SI units: :\text = \frac = \frac Since the development of technology, Transmission (mechanics), transmission and storage systems have been of immense interest to technologists and technology users. Electrical power With the widespread establishment of electrical grids, power transmission is usually associated most with electric power transmission. Alternating current is normally preferred as its voltage may be easily stepped up by a transformer in order to minimize electrical resistance, resistive loss in the Conductor (material), conductors used to transmit power over great distances; another set of transformers is required to step it back down to safer or more usable voltage levels at destination. Power transmission is usually performed with Ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
