A third-generation MagneRide suspension system is also available, which works by magnetising iron particles inside the suspension fluid to quickly adapt shock absorber firmness to road changes.
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An over-excited synchronous motor has a leading power factor. This makes it useful for power factor correction of industrial loads. Both transformers and induction motors draw lagging (magnetising) currents from the line. On light loads, the power drawn by induction motors has a large reactive component and the power factor has a low value.
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TIME, 4 December 1939, Vol. XXXIV, No. 23. Over the weekend of 18–21 November six other neutral ships were sunk off the English coast, including a 12,000 ton Japanese liner. Eventually, a method of de-magnetising ships, known as degaussing was developed, which involved girding them in electric cable, and was quickly applied to all ships.
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The power loss, permeability, apparent power, flux density, magnetic field, Barkhausen noise, magnetostriction characteristics of soft magnetic materials and hard magnetic materials can be measured with a range of test systems under DC, AC and rotational magnetising conditions. These systems enable material in a wide range of geometries to be tested from 0.001 Hz up to 200 kHz with controlled arbitrary waveforms.
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It is known to also form in areas that have been subjected to bushfires (particularly in the Leonora area of Western Australia) magnetising iron minerals. Maghemite was named in 1927 for an occurrence at the Iron Mountain mine, northwest of Redding, Shasta County, California. The name alludes to somewhat intermediate character between MAGnetite and HEMatite. It can appear blue with a grey shade, white, or brown.
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Magnetic logic is digital logic made using the non-linear properties of wound ferrite cores. Magnetic logic represents 0 and 1 by magnetising cores clockwise or anticlockwise.MAGNETIC CORES - PART I - PROPERTIES - Department of Defense 1962 - PIN 28374 - PROPERTIES OF MAGNETIC CORES AND THEIR APPLICATION IN DATA PROCESSING SYSTEM; HOW INFORMATION IS STORED AND TRANSFERRED FROM ONE CORE TO ANOTHER. Examples of magnetic logic include core memory.
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Oxford University Press. . p. 81. Faraday also discovered that the plane of polarization of linearly polarized light can be rotated by the application of an external magnetic field aligned with the direction in which the light is moving. This is now termed the Faraday effect. In Sept 1845 he wrote in his notebook, "I have at last succeeded in illuminating a magnetic curve or line of force and in magnetising a ray of light".
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Flux pumping is a method for magnetising superconductors to fields in excess of 15 teslas. The method can be applied to any type II superconductor and exploits a fundamental property of superconductors. That is their ability to support and maintain currents on the length scale of the superconductor. Conventional magnetic materials are magnetised on a molecular scale which means that superconductors can maintain a flux density orders of magnitude bigger than conventional materials.
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Flux pumping is especially significant when one bears in mind that all other methods of magnetising superconductors require application of a magnetic flux density at least as high as the final required field. This is not true of flux pumping. An electric current flowing in a loop of superconducting wire can persist indefinitely with no power source. In a normal conductor, an electric current may be visualized as a fluid of electrons moving across a heavy ionic lattice.
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During this Congress, names were proposed for four magnetic-circuit units in the C.G.S. System. Only two were accepted by vote: the C.G.S. unit for magnetic flux ( ') was named maxwell and C.G.S. unit of magnetising force (or magnetic field intensity) was named gauss ('H). Some delegates mistakenly believed and reported that the gauss was adopted as the C.G.S. unit of flux density (B). This mistake has been reproduced in contemporary texts, which have cited a mistaken report.
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Both these signals are detected from the magnetising yoke, which is contained in an aluminium head (55 mm in diameter as shown in the photo). The flux density is measured from a secondary winding wound on the yoke. For that reason there is a great influence on the measured values, hence great care should be taken that the measuring head is placed on a clean and even sample. The measurement is based on similar principle as employed in the standardised single sheet tester.
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In 1890, Ewing took up the post of Professor of Mechanism and Applied Mechanics at the University of Cambridge, initially at Trinity College, though he later moved to King's College. At Cambridge, Ewing's research into the magnetisation of metals led him to criticise the conventional account of Wilhelm Weber. In 1890, he observed that magnetisation lagged behind an applied alternating current. He described the characteristic hysteresis curve and speculated that individual molecules act as magnets, resisting changes in magnetising potential.
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Amitābha is the principal buddha in Pure Land Buddhism, a branch of East Asian Buddhism. In Vajrayana Buddhism, Amitābha is known for his longevity attribute, magnetising red fire element, the aggregate of discernment, pure perception and the deep awareness of emptiness of phenomena. According to these scriptures, Amitābha possesses infinite merit resulting from good deeds over countless past lives as a bodhisattva named Dharmakāra. Amitābha means "Infinite Light", and Amitāyus means "Infinite Life" so Amitābha is also called "The Buddha of Immeasurable Light and Life".
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The recorder was improved by placing the two poles on the same side of the wire so that the wire was magnetised along its length or longitudinally. Additionally, the poles were shaped into a "V" so that the head wrapped around the wire to some extent. This increased the magnetising effect and also increased the sensitivity of the head on replay because it collected more of the magnetic flux from the wire. This system was not entirely immune to twisting but the effects were far less marked.
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With the plan of expanding into the Far East, it set up British Oxygen (Far East) Ltd, based in Tokyo. It established subsidiaries and joint ventures in Jamaica, the Netherlands, South Africa, Sweden and Spain for a number of products; which included transformers, magnetising equipment, frozen foods, stable isotopes, radioactively labelled compounds and cryogenic systems. In 1971, the company installed the largest mainframe computer in Britain, linking a network of computers throughout the country, and sold computer time to outside customers. As a result, BOC diversified into the computer business.
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The magnetisation and demagnetisation (where not demagnetised thermally) occur through intermediate states as shown (right). The magnetising and demagnetising wavelengths provide the energy for the system to reach the intermediate states which then relaxe non-radiatively to one of the two states (the intermediate state for magnetisation and demagnetisation are different and so the photon flux is not wasted by relaxation to the same state from which the system was just excited). A direct transition from the ground state to the magnetic state and, more importantly, vice versa is a forbidden transition, and this leads to the magnetised state being metastable and persisting for a long period at low temperatures.
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Cut-away of a transducer comprising: magnetostrictive material (inside), magnetising coil, and magnetic enclosure completing the magnetic circuit (outside) Magnetostrictive materials can convert magnetic energy into kinetic energy, or the reverse, and are used to build actuators and sensors. The property can be quantified by the magnetostrictive coefficient, Λ, which may be positive or negative and is defined as the fractional change in length as the magnetization of the material increases from zero to the saturation value. The effect is responsible for the familiar "electric hum" () which can be heard near transformers and high power electrical devices. Cobalt exhibits the largest room-temperature magnetostriction of a pure element at 60 microstrains.
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Typical 3×1mm neodymium magnets have been reported to last on average five years implanted into finger extremities before body heat reduces the effectiveness of the implant. There have been no studies on magnetising implants after they have lost magnetisation other than removing and re- implanting a new magnet into a new site due to scar tissue formation preventing nerve sensation and reentry. There are three primary causes for magnets to lose sensitivity – the ability for you to sense magnetic fields. Field strength decline The magnetic field strength of a magnet can naturally decline very slowly over many many years, however total losses are negligible and certainly not detectable without extremely sensitive field strength meters.
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Initially, his magnetising practices were used to treat the sisters' shared diagnosis of hysteria and epilepsy in controlling or curtailing their convulsive episodes. By the autumn of 1837 Elliotson had ceased to treat the O'Keys merely as suitable objects for cure and instead sought to mobilise them as diagnostic instruments. When in states of mesmeric entrancement the O'Key sisters, due to the apparent increased sensitization of their nervous system and sensory apparatus, behaved as if they had the ability to see through solid objects, including the human body, and thus aid in medical diagnosis. As their fame rivalled that of Elliotson, however, the O'Keys behaved less like human diagnostic machines and became increasingly intransigent to medical authority and appropriated to themselves the power to examine, diagnose, prescribe treatment and provide a prognosis.
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The efficiency of an electric motor is defined as the ratio of usable shaft power to electric input power. ηmot = Pshaft ÷ Pin ηmot = motor efficiency [%] Pshaft = shaft Power [kW] ( in USA HP with factor 1.34) Pin = electrical input from power supply [kW] The shaft power is transferred to the machine driven; the electric input power is what is metered and charged for. Loss in motor efficiency is determined by the difference between the input power and output or shaft power. Ploss = Pin \- Pshaft Ploss = losses of electric motor [kW] Motor energy loss is mainly heat caused by many factors, including loss from the coil winding (resistance), loss in the rotor bars and slip rings, loss due to magnetising of the iron core, and loss from friction of bearings.
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