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Louis Bell (engineer)
Louis Bell (December 5, 1864 to June 14, 1923) was an American engineer, physicist, inventor, and academic. He was an early pioneer in Illuminating Engineering Society, illumination engineering and the Electric power transmission, transmission of electricity, being awarded 25 patents in power transmission. Biography Louis Bell was born December 5, 1864, in the small village of Chester, New Hampshire, the youngest child of Louis Bell (Sr.) and Mary Anne (Mollie) Persis Bouton. His father was a New Hampshire lawyer who died in 1865 while serving as a Union Army colonel at the Second Battle of Fort Fisher, battle of Fort Fisher during the American Civil War. His mother died shortly thereafter, leaving Louis Bell and his older sister Marion to be raised by their grandmother, Lucy G. Bell née Smith, the widow of prominent New Hampshire politician Samuel Bell (New Hampshire politician), Samuel Bell. An intelligent boy, Bell was an avid reader, and his studies were encouraged by his gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chester, New Hampshire
Chester is a town in Rockingham County, New Hampshire, United States. The population was 5,232 at the 2020 census, up from 4,768 at the 2010 census. It was home to the now defunct Chester College (formerly White Pines College). History From ''Statistics and Gazetteer of New-Hampshire'', 1875: "Chester is considered one of the old towns of the state. In 1719, about eighty persons, chiefly from Portsmouth and Hampton, formed an association, for the purpose of securing a tract of land in the "Chesnut Country" (so called) and stationed three men upon this tract, to hold possession until they should procure a lawful title. After considerable difficulty they obtained a grant of land, ten miles 6 kmsquare. Immediately the settlement was commenced by several persons from Rye and Hampton, among whom were Samuel Ingalls, Jonathan Goodhue, Jacob Sargent, Ebenezer Dearborn, Robert Smith, E. Colby and S. Robie, who contributed largely to the permanent success of the enterprise. On the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Applied Electricity
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after commercialization of the electric telegraph, the telephone, and electrical power generation, distribution, and use. Electrical engineering is now divided into a wide range of different fields, including computer engineering, systems engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, photovoltaic cells, electronics, and optics and photonics. Many of these disciplines overlap with other engineering branches, spanning a huge number of specializations including hardware engineering, power electronics, electromagnetics and waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics/control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineering Consultant
Engineering consulting is the practice of performing engineering as a Consulting Engineer. It assists individuals, public and private companies with process management, idea organization, product design, fabrication, MRO (Maintenance, Repair and Operations), servicing, tech advice, tech specifications, tech estimating, costing, budgeting, valuation, branding, and marketing. Engineering consulting firms may involve Civil, Structural, Mechanical, Electrical, Environmental, Chemical, Industrial, and Agricultural, Electronics and Telecom, Computer and Network, Instrumentation and Control, IT, Manufacturing and Production, Aerospace, Marine, Fire and Safety, etc. Consulting engineers may also assist in marketing. Education To practice as independent self employed Consulting Engineer requires at least a Bachelor's Degree in Engineering and a Government License. References See also * FIDIC The International Federation of Consulting Engineers (commonly known as FIDIC, acronym ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boston
Boston (), officially the City of Boston, is the capital city, state capital and List of municipalities in Massachusetts, most populous city of the Commonwealth (U.S. state), Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th-List of United States cities by population, most populous city in the country. The city boundaries encompass an area of about and a population of 675,647 2020 U.S. Census, as of 2020. It is the seat of Suffolk County, Massachusetts, Suffolk County (although the county government was disbanded on July 1, 1999). The city is the economic and cultural anchor of a substantially larger metropolitan area known as Greater Boston, a metropolitan statistical area (MSA) home to a census-estimated 4.8 million people in 2016 and ranking as the tenth-largest MSA in the country. A broader combined statistical area (CSA), generally corresponding to the commuting area and includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacramento, California
) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento County in California , pushpin_map = California#USA , pushpin_label = Sacramento , pushpin_map_caption = Location within California##Location in the United States , pushpin_relief = yes , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_name1 = California , subdivision_type2 = County , subdivision_name2 = Sacramento ---- , subdivision_type3 = Region , subdivision_name3 = Sacramento Valley , subdivision_type4 = CSA , subdiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alternating Current
Alternating current (AC) is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current (DC) which flows only in one direction. Alternating current is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy that consumers typically use when they plug kitchen appliances, televisions, fans and electric lamps into a wall socket. A common source of DC power is a battery cell in a flashlight. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify '' current'' or ''voltage''. The usual waveform of alternating current in most electric power circuits is a sine wave, whose positive half-period corresponds with positive direction of the current and vice versa. In certain applications, like guitar amplifiers, different waveforms are used, such as triangular waves or square waves. Audio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utility Frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains electricity by country. During the development of commercial electric power systems in the late-19th and early-20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Folsom Powerhouse
Folsom Powerhouse State Historic Park is a historical site preserving an 1895 alternating current (AC) hydroelectric power station—one of the first in the United States. Before the Folsom powerhouse was built nearly all electric power houses were using direct current (DC) generators powered by steam engines located within a very few miles of where the power was needed. The use of rushing water to generate hydroelectric power and then transmitting it long distances to where it could be used was not initially economically feasible as long as the electricity generated was low-voltage direct current. Once it was invented, AC power made it feasible to convert the electrical power to high voltage by using the newly invented transformers and to then economically transmit the power long distances to where it was needed. Lower voltage electrical power, which is much easier and safer to use, could be easily gotten by using transformers to convert the high voltage power to lower voltages n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mill Creek (San Bernardino County)
Mill Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed March 16, 2011 stream, originating in the San Bernardino Mountains, in San Bernardino County, California. It is a major tributary of the Santa Ana River. Their confluence occurs just downstream of the upper Santa Ana Canyon mouth. Part of the upper creek flows through San Bernardino National Forest, with the headwaters (High Creek and Mill Creek Jumpoff), being in the San Gorgonio Wilderness. Mill Creek is in much better condition than the lower portions of the Santa Ana watershed, as its drainage area is less urbanized. However, the creek has three hydroelectric plants owned by Southern California Edison. The first commercial power plant in the United States using three-phase alternating current was the 250 kilowatt Mill Creek No. 1 Hydroelectric Plant, near Redlands, California, in 1893 designed by Almarian Decker. The streambed is completely dewater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three-phase Electric Power
Three-phase electric power (abbreviated 3φ) is a common type of alternating current used in electricity generation, transmission, and distribution. It is a type of polyphase system employing three wires (or four including an optional neutral return wire) and is the most common method used by electrical grids worldwide to transfer power. Three-phase electrical power was developed in the 1880s by multiple people. Three-phase power works by the voltage and currents being 120 degrees out of phase on the three wires. As an AC system it allows the voltages to be easily stepped up using transformers to high voltage for transmission, and back down for distribution, giving high efficiency. A three-wire three-phase circuit is usually more economical than an equivalent two-wire single-phase circuit at the same line to ground voltage because it uses less conductor material to transmit a given amount of electrical power. Three-phase power is mainly used directly to power large inducti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oscar Terry Crosby
Oscar Terry Crosby (April 21, 1861 – January 2, 1947) was an American engineer, executive, author, and explorer. A West Point graduate, he served as the United States Assistant Secretary of the Treasury during World War 1. Biography Crosby was born April 21, 1861, in Ponchatoula, Louisiana, son of Reverend George Locke Crosby and Elizabeth Terry. He grew up during the Reconstruction era, receiving an education at a private school in Brookhaven, Mississippi. At the age of 17, he purchased a one-way ticket to West Point where he passed the United States Military Academy admittance exam. On September 1, 1878, Curtis entered the academy as a cadet. He graduated second in his class on June 13, 1882, and was commissioned a second lieutenant in the Army Corps of Engineers. On September 30, he was assigned to the Army installation at Willet's Point, New York. Crosby attained the rank of first lieutenant on July 3, 1883. He was married to Jeanne Maria Bouligny in 1886. Jeanne w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphase System
A polyphase system is a means of distributing alternating-current (AC) electrical power where the power transfer is constant during each electrical cycle. AC phase refers to the phase offset value (in degrees) between AC in multiple conducting wires; ''phases'' may also refer to the corresponding terminals and conductors, as in color codes. Polyphase systems have three or more energized electrical conductors carrying alternating currents with a defined phase between the voltage waves in each conductor; for three-phase voltage, the phase angle is 120° or 2π/3 radians (although early systems used 4 wire two-phase). Polyphase systems are particularly useful for transmitting power to electric motors which rely on alternating current to rotate. The most common example is the three-phase power system used for industrial applications and for power transmission. Compared to a single-phase, two-wire system, a three-phase three-wire system transmits three times as much power fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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