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Designed to Sell is an American HGTV reality television show produced by Pie Town Productions in Los Angeles and Chicago and Edelman Productions in Washington, D.C., and Atlanta. Each 30-minute episode focuses on fixing up a home that is about to go on the market or that has been on the market but has not attracted buy... | Wikipedia/Designed_to_Sell |
In mathematical analysis, the Dirac delta function (or δ distribution), also known as the unit impulse, is a generalized function on the real numbers, whose value is zero everywhere except at zero, and whose integral over the entire real line is equal to one. Thus it can be represented heuristically as
... | Wikipedia/Dirac's_delta_function |
In the mathematical field of graph theory, the Laplacian matrix, also called the graph Laplacian, admittance matrix, Kirchhoff matrix, or discrete Laplacian, is a matrix representation of a graph. Named after Pierre-Simon Laplace, the graph Laplacian matrix can be viewed as a matrix form of the negative discrete Laplac... | Wikipedia/Graph_Laplacian |
In mathematics, Fourier analysis () is the study of the way general functions may be represented or approximated by sums of simpler trigonometric functions. Fourier analysis grew from the study of Fourier series, and is named after Joseph Fourier, who showed that representing a function as a sum of trigonometric functi... | Wikipedia/Fourier_theory |
In mathematical heat conduction, the Green's function number is used to uniquely categorize certain fundamental solutions of the heat equation to make existing solutions easier to identify, store, and retrieve.
Numbers have long been used to identify types of boundary conditions. The Green's function number system was ... | Wikipedia/Green's_function_number |
Shock is an abrupt discontinuity in the flow field and it occurs in flows when the local flow speed exceeds the local sound speed. More specifically, it is a flow whose Mach number exceeds 1.
== Explanation of phenomena ==
Shock is formed due to coalescence of various small pressure pulses. Sound waves are pressure w... | Wikipedia/Shock_(fluid_dynamics) |
Nitrate is a polyatomic ion with the chemical formula NO−3. Salts containing this ion are called nitrates. Nitrates are common components of fertilizers and explosives. Almost all inorganic nitrates are soluble in water. An example of an insoluble nitrate is bismuth oxynitrate.
== Chemical structure ==
The nitrate a... | Wikipedia/Nitrates |
The Hamburg University of Applied Sciences (German: Hochschule für Angewandte Wissenschaften Hamburg) is a higher education and applied research institution located in Hamburg, Germany. Formerly known as Fachhochschule Hamburg, the Hamburg University of Applied Sciences was founded in 1970. In terms of student enrolmen... | Wikipedia/Hamburg_University_of_Applied_Sciences |
A conventional fixed-wing aircraft flight control system (AFCS) consists of flight control surfaces, the respective cockpit controls, connecting linkages, and the necessary operating mechanisms to control an aircraft's direction in flight. Aircraft engine controls are also considered flight controls as they change spee... | Wikipedia/Aircraft_flight_control_system |
Fox Business (officially known as Fox Business Network, or FBN) is an American conservative business news channel and website publication owned by the Fox News Media division of Fox Corporation. The channel broadcasts primarily from studios at 1211 Avenue of the Americas in Midtown Manhattan. Launched on October 15, ... | Wikipedia/Fox_Business_Network |
Cenovus Energy Inc. (pronounced se-nō-vus) is a Canadian integrated oil and natural gas company headquartered in Calgary, Alberta. Its offices are located at Brookfield Place, having completed a move from the neighbouring Bow in 2019.
== History ==
Cenovus was formed in 2009 when Encana Corporation split into two dis... | Wikipedia/Cenovus_Energy |
A corporate action is an event initiated by a public company that brings or could bring an actual change to the debt securities—equity or debt—issued by the company. Corporate actions are typically agreed upon by a company's board of directors and authorized by the shareholders. For some events, shareholders or bondhol... | Wikipedia/Corporate_action |
Corporate synergy is a financial benefit that a corporation expects to realize when it merges with or acquires another corporation. Corporate synergy occurs when corporations interact congruently with one another, creating additional value.
Synergies are divided into two groups: operational (revenue enhancement and c... | Wikipedia/Corporate_synergy |
A corporate identity or corporate image is the manner in which a corporation, firm or business enterprise presents itself to the public. The corporate identity is typically visualized by branding and with the use of trademarks, but it can also include things like product design, advertising, public relations etc. Corpo... | Wikipedia/Corporate_image |
A control premium is an amount that a buyer is sometimes willing to pay over the current market price of a publicly traded company in order to acquire a controlling share in that company.
If the market perceives that a public company's profit and cash flow is not being maximized, capital structure is not optimal, or ot... | Wikipedia/Control_premium |
Engineering physics (EP), sometimes engineering science, is the field of study combining pure science disciplines (such as physics, mathematics, chemistry or biology) and engineering disciplines (computer, nuclear, electrical, aerospace, medical, materials, mechanical, etc.).
In many languages, the term technical physi... | Wikipedia/Engineering_science |
Building material is material used for construction. Many naturally occurring substances, such as clay, rocks, sand, wood, and even twigs and leaves, have been used to construct buildings and other structures, like bridges. Apart from naturally occurring materials, many man-made products are in use, some more and some ... | Wikipedia/Building_materials |
Environmental engineering science (EES) is a multidisciplinary field of engineering science that combines the biological, chemical and physical sciences with the field of engineering. This major traditionally requires the student to take basic engineering classes in fields such as thermodynamics, advanced math, comput... | Wikipedia/Environmental_Engineering_Science |
A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near the center of the dis... | Wikipedia/Phonograph_record |
A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near the center of the dis... | Wikipedia/Phonograph_records |
The Country Network is an American cable, streaming and broadcast television network that specializes in broadcasting country music videos and exclusive original music-based content; its playlist of videos extends from the 1990s through the present day. The network also airs occasional infomercials and traditional adv... | Wikipedia/The_Country_Network |
Sound design is the art and practice of creating auditory elements of media. It involves specifying, acquiring and creating audio using production techniques and equipment or software. It is employed in a variety of disciplines including filmmaking, television production, video game development, theatre, sound recordin... | Wikipedia/Sound_designer |
BPI (British Recorded Music Industry) Limited, trading as British Phonographic Industry (BPI), is the British recorded music industry's trade association. It runs the BRIT Awards; is home to the Mercury Prize; co-owns the Official Charts Company with the Entertainment Retailers Association; and awards UK music sales th... | Wikipedia/British_Phonographic_Industry |
Phonograph cylinders (also referred to as Edison cylinders after its creator Thomas Edison) are the earliest commercial medium for recording and reproducing sound. Commonly known simply as "records" in their heyday (c. 1896–1916), a name which has been passed on to their disc-shaped successor, these hollow cylindrical ... | Wikipedia/Phonograph_cylinder |
In digital electronics, analogue electronics and entertainment, the user interface may include media controls, transport controls or player controls, to enact and change or adjust the process of video playback, audio playback, and alike. These controls are commonly depicted as widely known symbols found in a multitude ... | Wikipedia/Media_control_symbols |
A law firm network (law firm association or legal network) is a membership organization consisting of independent law firms. These networks are one type of professional services networks similar to networks found in the accounting profession. The common purpose is to expand the resources available to each member for pr... | Wikipedia/Law_firm_network |
Risk and strategic consulting refers to the provision of information, analysis and associated services in the field of international politics and economics, with the aim of providing a better understanding of the risks and opportunities facing businesses, governments and other groups.
In contrast to management consult... | Wikipedia/Risk_and_strategic_consulting |
Multidisciplinary professional services networks are organizations formed by law, accounting and other professional services firms to offer clients new multidisciplinary approaches solving increasingly complex issues. They are a type of professional services network which operates to provide services to their members... | Wikipedia/Multidisciplinary_professional_services_networks |
Professional services networks are business networks of independent firms who come together to provide professional services to clients through an organized framework. They are notably found in law and accounting. Any profession that operates in one location, but has clients in multiple locations, may provide potential... | Wikipedia/Professional_services_network |
Strategy+Business (stylized as strategy+business) is a business magazine focusing on management and corporate strategy. Headquartered in New York, it is published by member firms of the PricewaterhouseCoopers (PwC) network.
Articles cover industry topics of interest to CEOs and other senior executives, as well as to bu... | Wikipedia/Strategy+Business |
An aerated lagoon (or aerated pond) is a simple wastewater treatment system consisting of a pond with artificial aeration to promote the biological oxidation of wastewaters.
There are many other aerobic biological processes for treatment of wastewaters, for example activated sludge, trickling filters, rotating biologi... | Wikipedia/Aerated_lagoon |
Blue Plains Advanced Wastewater Treatment Plant in Washington, D.C., is the largest advanced wastewater treatment plant in the world. The facility is operated by the District of Columbia Water and Sewer Authority (DC Water). The plant opened in 1937 as a primary treatment facility, and advanced treatment capacity was a... | Wikipedia/Blue_Plains_Advanced_Wastewater_Treatment_Plant |
Secondary treatment (mostly biological wastewater treatment) is the removal of biodegradable organic matter (in solution or suspension) from sewage or similar kinds of wastewater.: 11 The aim is to achieve a certain degree of effluent quality in a sewage treatment plant suitable for the intended disposal or reuse opti... | Wikipedia/Secondary_treatment |
The Urban Waste Water Treatment Directive 1991 (91/271/EEC) European Union directive concerning urban waste water "collection, treatment and discharge of urban waste water and the treatment and discharge of waste water from certain industrial sectors". It aims "to protect the environment from adverse effects of waste w... | Wikipedia/Urban_Waste_Water_Treatment_Directive |
Sewage treatment is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges. Sewage contains wastewater from households... | Wikipedia/Fourth_treatment_stage |
A mechanical biological treatment (MBT) system is a type of waste processing facility that combines a sorting facility with a form of biological treatment such as composting or anaerobic digestion. MBT plants are designed to process mixed household waste as well as commercial and industrial wastes.
== Process ==
The... | Wikipedia/Mechanical_biological_treatment |
Sewage treatment is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges. Sewage contains wastewater from households... | Wikipedia/Sewage_treatment_plant |
The water resources of Palestine are de facto fully controlled by Israel, and the division of groundwater is subject to provisions in the Oslo II Accord.
Generally, the water quality is considerably worse in the Gaza strip when compared to the West Bank. About a third to half of the delivered water in the Palestinian t... | Wikipedia/Wastewater_treatment_in_Palestine |
Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facil... | Wikipedia/Industrial_wastewater |
In animal husbandry, a concentrated animal feeding operation (CAFO), as defined by the United States Department of Agriculture (USDA), is an intensive animal feeding operation (AFO) in which over 1,000 animal units are confined for over 45 days a year. An animal unit is the equivalent of 1,000 pounds of "live" animal w... | Wikipedia/Concentrated_animal_feeding_operation |
An aerobic treatment system (ATS), often called an aerobic septic system, is a small scale sewage treatment system similar to a septic tank system, but which uses an aerobic process for digestion rather than just the anaerobic process used in septic systems. These systems are commonly found in rural areas where public... | Wikipedia/Aerobic_treatment_system |
Wastewater treatment is a process which removes and eliminates contaminants from wastewater. It thus converts it into an effluent that can be returned to the water cycle. Once back in the water cycle, the effluent creates an acceptable impact on the environment. It is also possible to reuse it. This process is called w... | Wikipedia/Wastewater_treatment_plant |
An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms—aquatic life—that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and fresh... | Wikipedia/Aquatic_ecosystems |
Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge treatment is focused on reducing sludge weight and volume to reduce transportation and disposal costs, and on reducing potential health risks of disposal options. Water removal is the pri... | Wikipedia/Sewage_sludge_treatment |
Industrialisation (UK) or industrialization (US) is the period of social and economic change that transforms a human group from an agrarian society into an industrial society. This involves an extensive reorganisation of an economy for the purpose of manufacturing. Industrialisation is associated with increase of pollu... | Wikipedia/Industrialization |
Architectural design values make up an important part of what influences architects and designers when they make their design decisions. However, architects and designers are not always influenced by the same values and intentions. Value and intentions differ between different architectural movements. It also differs b... | Wikipedia/Architectural_design_values |
A Master of Design (MDes, M.Des. or M.Design) is a postgraduate academic master degree in the field of Design awarded by several academic institutions around the world. The degree level has different equivalencies; some MDes are equivalent to Master of Fine Arts and others to a Master of Arts or Master of Science postg... | Wikipedia/Master_of_Design |
In architecture, functionalism is the principle that buildings should be designed based solely on their purpose and function. An international functionalist architecture movement emerged in the wake of World War I, as part of the wave of Modernism. Its ideas were largely inspired by a desire to build a new and better w... | Wikipedia/Functionalism_(architecture) |
An industrial design right is an intellectual property right that protects the visual design of objects that are purely utilitarian. An industrial design consists of the creation of a shape, configuration or composition of pattern or color, or combination of pattern and color in three-dimensional form containing aesth... | Wikipedia/Industrial_design_rights |
Form follows function is a principle of design associated with late 19th- and early 20th-century architecture and industrial design in general, which states that the appearance and structure of a building or object (architectural form) should primarily relate to its intended function or purpose.
== Origins of the phr... | Wikipedia/Form_follows_function |
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after the commercialization of the electric te... | Wikipedia/electrical_engineering |
Transatlantic telegraph cables were undersea cables running under the Atlantic Ocean for telegraph communications. Telegraphy is a largely obsolete form of communication, and the cables have long since been decommissioned, but telephone and data are still carried on other transatlantic telecommunications cables.
The... | Wikipedia/Transatlantic_telegraph_cable |
Wireless telegraphy or radiotelegraphy is the transmission of text messages by radio waves, analogous to electrical telegraphy using cables. Before about 1910, the term wireless telegraphy was also used for other experimental technologies for transmitting telegraph signals without wires. In radiotelegraphy, informati... | Wikipedia/Wireless_telegraphy |
Processor design is a subfield of computer science and computer engineering (fabrication) that deals with creating a processor, a key component of computer hardware.
The design process involves choosing an instruction set and a certain execution paradigm (e.g. VLIW or RISC) and results in a microarchitecture, which mig... | Wikipedia/Chip_design |
The Doctor of Engineering (DEng or EngD) or Doctor of Engineering Sciences is a research doctorate in engineering and applied science. An EngD is a terminal degree similar to a PhD in engineering but applicable more in industry rather than in academia. The degree is usually aimed toward working professionals.
The DEng/... | Wikipedia/Engineering_Doctorate |
Automation describes a wide range of technologies that reduce human intervention in processes, mainly by predetermining decision criteria, subprocess relationships, and related actions, as well as embodying those predeterminations in machines. Automation has been achieved by various means including mechanical, hydrauli... | Wikipedia/Industrial_automation |
IEEE Transactions on Nuclear Science is a peer-reviewed scientific journal published monthly by the IEEE. Sponsored by IEEE Nuclear and Plasma Sciences Society, the journal covers the theory, technology, and application areas related to nuclear science and engineering. Its editor-in-chief is Zane Bell (Oak Ridge Nation... | Wikipedia/IEEE_Transactions_on_Nuclear_Science |
Semiconductor device modeling creates models for the behavior of semiconductor devices based on fundamental physics, such as the doping profiles of the devices. It may also include the creation of compact models (such as the well known SPICE transistor models), which try to capture the electrical behavior of such devic... | Wikipedia/Semiconductor_device_modeling |
The function block diagram (FBD) is a graphical language for programmable logic controller design, that can describe the function between input variables and output variables. A function is described as a set of elementary blocks. Input and output variables are connected to blocks by connection lines.
== Design ==
I... | Wikipedia/Function_block_diagram |
A process plant shutdown system is a functional safety countermeasure crucial in any hazardous process plant such as oil and gas production plants and oil refineries. The concept also applies to non-process facilities such as nuclear plants. These systems are used to protect people, assets, and the environment when pro... | Wikipedia/Plant_process_and_emergency_shutdown_systems |
Sequential function chart (SFC) is a visual programming language used for programmable logic controllers (PLCs). It is one of the five languages defined by IEC 61131-3 standard. The SFC standard is defined as Preparation of function charts for control systems, and was based on GRAFCET (itself based on binary Petri nets... | Wikipedia/Sequential_function_chart |
A cam timer or drum sequencer is an electromechanical system for controlling a sequence of events automatically. It resembles a music box with movable pins, controlling electrical switches instead of musical notes.
== Description ==
An electric motor drives a shaft arranged with a series of cams or a drum studded wit... | Wikipedia/Drum_sequencer_(controller) |
In science, computing, and engineering, a black box is a system which can be viewed in terms of its inputs and outputs (or transfer characteristics), without any knowledge of its internal workings. Its implementation is "opaque" (black). The term can be used to refer to many inner workings, such as those of a transisto... | Wikipedia/Black_box_(systems) |
Advanced Design System (ADS) is an electronic design automation software system produced by PathWave Design, a division of Keysight Technologies. It provides an integrated design environment to designers of RF electronic products such as mobile phones, pagers, wireless networks, satellite communications, radar systems,... | Wikipedia/Advanced_Design_System |
Electronic circuit design comprises the analysis and synthesis of electronic circuits.
== Methods ==
To design any electrical circuit, either analog or digital, electrical engineers need to be able to predict the voltages and currents at all places within the circuit. Linear circuits, that is, circuits wherein the ou... | Wikipedia/Electronic_circuit_design |
The Exner equation describes conservation of mass between sediment in the bed of a channel and sediment that is being transported.
It states that bed elevation increases (the bed aggrades) proportionally to the amount of sediment that drops out of transport, and conversely decreases (the bed degrades) proportionally... | Wikipedia/Exner_equation |
A runoff models or rainfall-runoff model describes how rainfall is converted into runoff in a drainage basin (catchment area or watershed). More precisely, it produces a surface runoff hydrograph in response to a rainfall event, represented by and input as a hyetograph.
Rainfall-runoff models need to be calibrated bef... | Wikipedia/Runoff_model_(reservoir) |
The Universal Soil Loss Equation (USLE) is a widely used mathematical model that describes soil erosion processes.
Erosion models play critical roles in soil and water resource conservation and nonpoint source pollution assessments, including: sediment load assessment and inventory, conservation planning and design for... | Wikipedia/Universal_Soil_Loss_Equation |
The United States Environmental Protection Agency (EPA) Storm Water Management Model (SWMM) is a dynamic rainfall–runoff–subsurface runoff simulation model used for single-event to long-term (continuous) simulation of the surface/subsurface hydrology quantity and quality from primarily urban/suburban areas.
It can simu... | Wikipedia/Storm_Water_Management_Model |
A hydrograph is a graph showing the rate of flow (discharge) versus time past a specific point in a river, channel, or conduit carrying flow. The rate of flow is typically expressed in units of cubic meters per second (m³/s) or cubic feet per second (cfs).
Hydrographs often relate changes of precipitation to changes in... | Wikipedia/Hydrograph |
The Bradshaw Model is an idealised geographical model which suggests how a river's characteristics vary between the upper course and lower course of a river. It indicates how discharge, occupied channel width, channel depth, and average load quantity increase downstream, and other properties such as load particle size,... | Wikipedia/Bradshaw_model |
The Canadian Pacific Railway (French: Chemin de fer Canadien Pacifique) (reporting marks CP, CPAA, MILW, SOO), also known simply as CPR or Canadian Pacific and formerly as CP Rail (1968–1996), is a Canadian Class I railway incorporated in 1881. The railway is owned by Canadian Pacific Kansas City Limited, known until 2... | Wikipedia/CPR_Telegraphs |
The Canadian National Railway Company (French: Compagnie des chemins de fer nationaux du Canada) (reporting mark CN) is a Canadian Class I freight railway headquartered in Montreal, Quebec, which serves Canada and the Midwestern and Southern United States.
CN is Canada's largest railway, in terms of both revenue and th... | Wikipedia/CN_Telegraph |
The Baltimore–Washington telegraph line was the first long-distance telegraph system set up to run overland in the United States.
== Building of line ==
In March 1843, the US Congress appropriated US$30,000 (equivalent to $1,012,393 in 2024) to Samuel Morse to lay a telegraph line between Washington, D.C., and Baltim... | Wikipedia/Baltimore-Washington_telegraph_line |
The Foy–Breguet telegraph, also called the French telegraph, was an electrical telegraph of the needle telegraph type developed by Louis-François-Clement Breguet and Alphonse Foy in the 1840s for use in France. The system used two-needle instruments that presented a display using the same code as that on the optical t... | Wikipedia/Foy–Breguet_telegraph |
There are two types of radio network currently in use around the world: the one-to-many (simplex communication) broadcast network commonly used for public information and mass-media entertainment, and the two-way radio (duplex communication) type used more commonly for public safety and public services such as police, ... | Wikipedia/Radio_network |
Telegram style, telegraph style, telegraphic style, or telegraphese is a clipped way of writing which abbreviates words and packs information into the smallest possible number of words or characters. It originated in the telegraph age when telecommunication consisted only of short messages transmitted by hand over the ... | Wikipedia/Telegraphese |
The Foy–Breguet telegraph, also called the French telegraph, was an electrical telegraph of the needle telegraph type developed by Louis-François-Clement Breguet and Alphonse Foy in the 1840s for use in France. The system used two-needle instruments that presented a display using the same code as that on the optical t... | Wikipedia/Foy-Breguet_telegraph |
GN Store Nord A/S is a Danish manufacturer of hearing aids (GN ReSound/GN Hearing), speakerphones, videobars and headsets (Jabra (GN Audio) and SteelSeries). GN Store Nord A/S is listed on NASDAQ OMX Copenhagen (ISIN code DK0010272632).
== History ==
=== The Great Northern Telegraph Company ===
The company was fou... | Wikipedia/Great_Northern_Telegraph_Company |
The Baltimore–Washington telegraph line was the first long-distance telegraph system set up to run overland in the United States.
== Building of line ==
In March 1843, the US Congress appropriated US$30,000 (equivalent to $1,012,393 in 2024) to Samuel Morse to lay a telegraph line between Washington, D.C., and Baltim... | Wikipedia/Baltimore–Washington_telegraph_line |
The Quadruplex telegraph is a type of electrical telegraph which allows a total of four separate signals to be transmitted and received on a single wire at the same time (two signals in each direction). Quadruplex telegraphy thus implements a form of multiplexing.
The technology was invented by Thomas Edison, who sold ... | Wikipedia/Quadruplex_telegraph |
A telegraph key, clacker, tapper or morse key is a specialized electrical switch used by a trained operator to transmit text messages in Morse code in a telegraphy system. Keys are used in all forms of electrical telegraph systems, including landline (also called wire) telegraphy and radio (also called wireless) tel... | Wikipedia/Telegraph_key |
The Schilling telegraph is a needle telegraph invented by Pavel Schilling in the nineteenth century. It consists of a bank of needle instruments (six as developed for use in Russia) which between them display a binary code representing a letter or numeral. Signals were sent from a piano-like keyboard, and an addition... | Wikipedia/Schilling_telegraph |
Analogue filters are a basic building block of signal processing much used in electronics. Amongst their many applications are the separation of an audio signal before application to bass, mid-range, and tweeter loudspeakers; the combining and later separation of multiple telephone conversations onto a single channel; ... | Wikipedia/Voice_frequency_telegraphy |
The British and Irish Magnetic Telegraph Company (also called the Magnetic Telegraph Company or the Magnetic) was a provider of telegraph services and infrastructure. It was founded in 1850 by John Brett. The Magnetic became the principal competitor to the largest telegraph company in the United Kingdom, Electric Teleg... | Wikipedia/Magnetic_Telegraph_Company |
A heliograph (from Ancient Greek ἥλιος (hḗlios) 'sun' and γράφειν (gráphein) 'to write') is a solar telegraph system that signals by flashes of sunlight (generally using Morse code from the 1840s) reflected by a mirror. The flashes are produced by momentarily pivoting the mirror, or by interrupting the beam with a sh... | Wikipedia/Heliograph |
The Teletype Model 33 is an electromechanical teleprinter designed for light-duty office use. It is less rugged and cost less than earlier Teletype models. The Teletype Corporation introduced the Model 33 as a commercial product in 1963, after it had originally been designed for the United States Navy. The Model 33 was... | Wikipedia/Teletype_Model_33 |
The U.S. Military Telegraph Corps was formed in 1861 following the outbreak of the American Civil War. David Strouse, Samuel M. Brown, Richard O'Brian and David H. Bates, all from the Pennsylvania Railroad Company, were sent to Washington, D.C. to serve in the newly created office. In October of that year, Anson Stager... | Wikipedia/U.S._Military_Telegraph_Corps |
The first transcontinental telegraph (completed October 24, 1861) was a line that connected the existing telegraph network in the eastern United States to a small network in California, by means of a link between Omaha, Nebraska and Carson City, Nevada, via Salt Lake City. It was a milestone in electrical engineering a... | Wikipedia/First_transcontinental_telegraph |
The telautograph is an ancestor of the modern fax machine. It transmits electrical signals representing the position of a pen or tracer at the sending station to repeating mechanisms attached to a pen at the receiving station, thus reproducing at the receiving station a drawing, writing, or signature made by the sender... | Wikipedia/Telautograph |
Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the digitalised circuits of the public switched telephone network. Work on the standard began in 1980 at Bell Labs and was formally standardized in ... | Wikipedia/Integrated_Services_Digital_Network |
Earth-return telegraph is the system whereby the return path for the electric current of a telegraph circuit is provided by connection to the earth through an earth electrode. Using earth return saves a great deal of money on installation costs since it halves the amount of wire that is required, with a corresponding ... | Wikipedia/Earth-return_telegraph |
The Cooke and Wheatstone telegraph was an early electrical telegraph system dating from the 1830s invented by English inventor William Fothergill Cooke and English scientist Charles Wheatstone. It was a form of needle telegraph, and the first telegraph system to be put into commercial service. The receiver consisted ... | Wikipedia/Cooke_and_Wheatstone_telegraph |
A needle telegraph is an electrical telegraph that uses indicating needles moved electromagnetically as its means of displaying messages. It is one of the two main types of electromagnetic telegraph, the other being the armature system, as exemplified by the telegraph of Samuel Morse in the United States. Needle tele... | Wikipedia/Needle_telegraph |
The next-generation network (NGN) is a body of key architectural changes in telecommunication core and access networks. The general idea behind the NGN is that one network transports all information and services (voice, data, and all sorts of media such as video) by encapsulating these into IP packets, similar to those... | Wikipedia/Next-generation_network |
A hydraulic telegraph (Greek: υδραυλικός τηλέγραφος) refers to two different semaphore systems involving the use of water-based mechanisms as a telegraph. The earliest one was developed in 4th-century BC Greece, while the other was developed in 19th-century AD Britain. The Greek system was deployed in combination with ... | Wikipedia/Hydraulic_telegraph |
The Atlantic Telegraph Company was a company formed on 6 November 1856 to undertake and exploit a commercial telegraph cable across the Atlantic Ocean, the first such telecommunications link.
== History ==
Cyrus Field, American businessman and financier, set his sights on laying the first transatlantic underwater tel... | Wikipedia/Atlantic_Telegraph_Company |
Acoustic telegraphy (also known as harmonic telegraphy) was a name for various methods of multiplexing (transmitting more than one) telegraph messages simultaneously over a single telegraph wire by using different audio frequencies or channels for each message. A telegrapher used a conventional Morse key to tap out th... | Wikipedia/Acoustic_telegraphy |
The Chinese telegraph code, or Chinese commercial code, is a four-digit character encoding enabling the use of Chinese characters in electrical telegraph messages.
== Encoding and decoding ==
A codebook is provided for encoding and decoding the Chinese telegraph code. It shows one-to-one correspondence between Chines... | Wikipedia/Chinese_telegraph_code |
Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pigeon post is not. Ancient signalling systems, although sometimes quite extensi... | Wikipedia/Telegraph_office |
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