Corona discharge - Corona discharge In electricity, a corona discharge is an electrical discharge brought on by the ionization of a fluid surrounding a conductor, which occurs when the potential gradient exceeds a certain value, in situations where sparking is not favoured. Table of contents showTocToggle("show","hide") 1 Introduction 2 Applications of Corona Discharge 3 Mechanism of Corona Discharge 3.1 Electron Avalanches 4 Positive Coronas 4.2 Properties 4.3 Mechanism 5 Negative Coronas 5.4 Properties 5.5 Mechanism 6 References Introduction A corona is a process by which a current, perhaps sustained, develops between two high-potential electrodes in a neutral fluid, usually air, by ionising that fluid so as to create a plasma around one electrode, and by using the ions generated in plasma-processes as the charge carriers to the other electrode..
Corona - Corona A corona is produced by the diffraction of light from either the Sun or the Moon through a cloud of water droplets. It consists of a series of concentric colored rings which appear around the celestial object but which are actually at cloud height. Coronae differ from haloes in that the latter are formed by refraction from ice crystals. Reddish colors always occupy the outer part of a corona's ring. The corona is the luminous "atmosphere" of the Sun extending millions of kilometers into space, most easily seen during a total solar eclipse. An interesting feature of the corona is the fact that it is much hotter than the visible "surface" of the Sun; the photosphere is approximately 6000°C compared to the corona at over.
Kirlian photography - capture the original leaf was replaced with new glass before the freshly cut leaf was photographed, leading them to conclude that the "cut leaf" phenomenon was caused by microscopic etching in the surface of the glass which occurred during preparing the images of the uncut leaf. They also reported on a number of demonstrable causes such as surface moisture and pressure which can account for much of the variations in color, shape, and size of the resulting image. The accepted explanation amongst scientists is that the images produced are those typically caused by a high voltage corona effect, similar to those seen from other high voltage sources such as van der Graaf generators. In a darkened room, this is visible as faint glow; but because of the high voltages, the film.
HVDC - 1 The rise of AC transmission 2 Advantages of HVDC over AC Transmission 3 Rectifying and Inverting 3.1 Rectifying and Inverting Components 3.2 Rectifying and Inverting Systems 4 Polarity 4.3 Polarity and Earth Return 4.4 Polarity and Corona Discharge 5 Applications 5.5 Overview 5.6 System Configurations 6 References The rise of AC transmission DC transmission remains the exception, rather than the rule, in power transmission There are environments where HVDC is the conventional solution, such as in submarine cables and in interconnecting unsynchronized AC systems, however for the bulk of situations AC transmission remains in a dominant position. Early attempts at transmission used direct current. However, early in the development of electrical power, AC came to dominate as a means of interconnection between generation plants and machinery. The principal advantage of.
Biefeld-Brown effect - electro-hydrodynamics (EHD) or sometimes electro-fluid-dynamics, a counterpart to the well-known magneto-hydrodynamics. The effect relies on corona discharge, which allows atoms to become ionized very easily near sharp points and edges – this is why lightning rods are pointy. In this case two electrodes are used with a high voltage between then, about 20kV, where one electrode is small or sharp, and the other larger and smoother. This creates a high field gradient around the smaller, positively charged electrode. Around this electrode, electrons are stripped off the atoms in the surrounding medium, they are literally pulled right off by the electrode's charge. The electrons quickly move to the electrode, and are driven to the negative electrode by the voltage. This leaves a cloud of positively charged ions in the medium, which are.
Club - we come to the religious associations. These had several names, especially thiasi, eranoi and orgeones, and it is not possible to distinguish these from each other in historical times, though they may have had different origins. They had the common object of sacrifice to a particular deity; the thiasi and orgeones seem connected more especially with foreign deities whose rites were of an orgiastic character. Paul Foucart has written an excellent treatise on the organization of these societies (Les Associations religieuses chez les Grecs, Paris, 1873), which provides many of the following particulars. For the greater part of them the evidence consists of inscriptions from various parts of Greece, many of which Foucart published for the first time at the end of his book. Strikingly, all these associations have the object.
Wind turbine - areas this source of power is usually photovoltaic or diesel. With a grid connection, the auxiliary power is often from gas turbines or hydropower. Birds can be killed by running into the blades or by being electrocuted by the power lines. At a high extra cost, power lines can be buried to eliminate the danger from electrocution. To reduce bird deaths, wind farms should be out of bird migration routes. Mechanical wind generators were based on windmills and were popular in the 1900s to the 1940s, before rural electrification programs brought grid connected electricity to the countryside. They started their revival in the 1970s as the price of oil increased. Wind generator cost per unit power has been decreasing by about four percent per year. In the year 2001, they're one.
Mass spectrometer - ionization and matrix-assisted laser desorption ionization. Another ionization mode is Atmospheric Pressure chemical Ionization (APcI). APcI allows for high flow rates typical of HPLC to be used directly, often without diverting the larger fraction of volume to waste. Typically these mobile phase / analyte sytems are heated to temperatures in excess of 400 degrees Celsius, sprayed with high flow rates of nitrogen and the entire aerosol cloud is subjected to a corona discharge that creates ions. The term "chemical" ionization comes from the fact that the initial ions produced are typically those of the mobile phase and its modifiers. The analyte is ionized by charge transfer during collisions in the high (atmospheric) pressure region of the outer source. The mass analyzer is the most flexible part of the mass spectrometer. Since.
Electrostatic discharge - Electrostatic discharge In physics, an electrostatic discharge or ESD is a sudden flow of electric current through a material that is normally an insulator. A large potential difference across the insulator generates a strong electric field, converting the material's atoms into ions that conduct a current. The best known example of ESD is a lightning strike. In this case the insulator that breaks down is air, the potential difference between cloud and ground can be millions of volts, and the resulting current that flows heats the air causing an explosive release of energy. ESD is also the cause of so-called 'static electricity' that people experience in dry weather, when small sparks fly between insulating materials such as hair and clothing. ESD is a serious problem in electronics,.
Electrical discharge machining - Electrical discharge machining Electrical discharge machining is a method of working extremely hard materials or materials that are difficult to machine cleanly using conventional methods. It is limited, however, to electrically conductive materials. EDM can cut small or odd-shaped angles, intricate cavities or intricate contours in extremely hard steel and exotic metals such as titanium, hastalloy, kovar, inconel, hard tool steels, and carbide. Sometimes referred to as spark machining, EDM is a nontraditional method of removing metal by a series of rapidly recurring electrical discharges between an electrode (the cutting tool) and the work piece in the presence of a dielectric field. The ensuing chips are removed by melting and vaporization, and are washed away by the continuously flushing dielectric fluid. Consecutive electrical discharges produce a series.
Discharge - Discharge In healthcare, discharge represents the end point of an inpatient hospital contact which consists of one or several days of care. In the First Nations Report (02-01), both inpatient hospital stays and surgical outpatient records are included. In addition, hospital separations do not include newborn separations, since this would essentially result in a double counting (the woman and the baby being discharged). Discharge was a British punk rock band. Their heavy guitar-driven sound and anti-melodic screamed vocals earned an early crossover appeal to fans of speedmetal. Their songs focused on anarchist and pacifist themes emphasizing the grisly effects of nuclear war and capitalism. Discography Hear Nothing, See Nothing, Say Nothing. Protest and Survive. Grave New World..
DC discharges - DC discharges A DC discharge is an electrical discharge caused by a DC voltage applied to electrodes..
Henry Peter Brougham, 1st Baron Brougham and Vaux - in it would be increased. But the irritability of his temper and the egotism of his character made it impossible for his colleagues to work with him, and the extreme mental excitement under which he laboured at this time culminated during a journey to Scotland in a behaviour so extravagant, that it gave the final stroke to the confidence of the king. At Lancaster he joined the bar-mess, and spent the night in an orgy. In a country house he lost the great seal, and found it again in a game of blindman's-buff. At Edinburgh, in spite of the coldness which had sprung up between himself and the Grey family, he was present at a banquet given to the late premier, and delivered a harangue on his own services and his.
Henry William Paget, 1st Marquess of Anglesey - the best cavalry general in the British army could not be neglected. Wellington placed the greatest confidence in him, and on the eve of Waterloo extended his command so as to include the whole of the allied cavalry and horse artillery. He covered the retirement of the allies from Quatre Bras to Waterloo on 17 June, and on 18 June gained the crowning distinction of his military career in leading the great cavalry charge of the British centre, which checked and in part routed D'Erlon's corps d'armee. Freely exposing his own life throughout, the earl received, by one of the last cannon shots fired, a severe wound in the leg, necessitating amputation. This is the event which caused Paget's name to go down in history. According to anecdote, he was close.
Diabetes dictionary - per deciliter of blood. A fasting reading of 70 to 110 mg/dL is considered in the normal (nondiabetic) range. Microaneurysm - A small swelling that forms on the side of tiny blood vessels. These small swellings may break and bleed into nearby tissue. People with diabetes sometimes get microaneurysms in the retina of the eye. Microangiopathy - See: Angiopathy. Microvascular disease - Disease of the smallest blood vessels that sometimes occurs when a person has had diabetes for a long time. Mixed dose - Combining two kinds of insulin in one injection. A mixed dose commonly combines regular insulin, which is fast acting, with a longer acting insulin such as NPH. A mixed dose insulin schedule may be prescribed to provide both short-term and long-term coverage. Mononeuropathy - A form of.
Brandenburg-Prussia - Hohenzollern lands were repeatedly marched across by various armies in the Thirty Years War, spending much of the war occupied by Sweden. Taking advantage of the difficult position of Poland with Sweden in the Northern war, and their friendly position with Russia during a series of Russo-Polish wars, "The Great Elector" Friedrich Wilhelm (1640-1688) obtained a discharge of his vassal obligations and after the Tatar invasion of Poland in 1656-57, was finally given independent control of Prussia in 1660. In 1701 his son, Friedrich III, proclaimed himself Friedrich I, King in Prussia. Brandenburg-Prussia -The Kingdom The Kingdom of Prussia existed from 1701 through 1918 under the rule of Brandenburg which became the leading kingdom of the German Empire, comprising in its last form almost two-thirds of the area of the Empire..
Ken Calvert - of Representatives since 1993, representing the 44th District of California. He was born in Corona, California, was educated at San Diego State University, and was a restaurant manager and business owner before entering the House..
Klingon - Empire c. 500 C.E.) Emperor Reclaw (last of the 2nd Dynasty) "Dark Time" (10-year democratic period between 2nd & 3rd dynasties) Emperor Sompek Chancellor Gorkon (died 2293) Chancellor Azetbur (beginning 2293) Chancellor Mow'ga (2nd Empire) Chancellor K'mpec (died 2367) Chancellor Gowron (2367-2375) Emperor Kahless (ceremonial ruler from 2369 coregent with chancellor) Chancellor Martok (beginning 2375) Klingon hand weapons To all Klingons, battle is sacred, and treated with much ceremony. Therefore, many advances have been made by Klingons in the field of weaponry. Disruptor Pistol This is the main weapon all klingons carry. It has a power cell and fires a beam of pure energy at a target, vaporizing it. Whether sneaking into enemy territory or going to the market to buy some heart of Targ, this is a tried-and-true choice. Disruptor.
Klinger - 4077th Mobile Army Surgical Hospital unit during the Korean War. Making no secret of his disdain for the army, Klinger constantly tried to get a discharge. Outside the occasional outlandish desertion attempt, he was unwilling to accept a dishonourable discharge and instead tried to convince his commanding officer to grant him a medical discharge on the basis of mental instability (referred to as a "Section 8" in military jargon). This often involved continually wearing women's clothes and bizarre behaviour like trying to literally eat a jeep or wearing heavy clothing during a heat wave. The commanders were never fooled and Klinger was continually frustrated. The commanders largely tolerated his antics because they were entertaining and Klinger was otherwise a conscientious and reliable orderly who made a point of never letting his.
Kray twins - achieved some success as professional fighters. Unfortunately, the fighting didn't stop at the edge of the ring, and the Kray twins quickly became famous for their gang of roughs and the mayhem they caused. They narrowly escaped probation and/or prison several times, and then, in 1951, they were called up for National Service. They deserted, and were sent to a military prison in Somerset for the duration of their service. Their boxing careers over, the boys turned to crime on discharge, buying a seedy club in Bethnal Green, and commencing several protection 'rackets'. By the end of the 1950s, the Krays were involved in hijacking, armed robbery and arson, through which means they acquired a small empire of clubs and other properties. In the 1960s, they were well placed, as prosperous.
