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USS Jimmy Carter in the magnetic silencing facility at Naval Base Kitsap for her first deperming treatment RMS Queen Mary arriving in New York Harbor, 20 June 1945, with thousands of U.S. soldiers – note the prominent degaussing coil running around the hull Control panel of the MES-device ("Magnetischer Eigenschutz" German: magnetic self-protection) in a German submarine Close-wrap deperming ...
The magnetic field is held constant to prevent the dipoles from reabsorbing the heat. Once sufficiently cooled, the magnetocaloric substance and the coolant are separated (H=0). Adiabatic demagnetization: The substance is returned to another adiabatic (insulated) condition so the total entropy remains constant. However, this time the magnetic ...
The demagnetizing field, also called the stray field (outside the magnet), is the magnetic field (H-field) [1] generated by the magnetization in a magnet.The total magnetic field in a region containing magnets is the sum of the demagnetizing fields of the magnets and the magnetic field due to any free currents or displacement currents.
One application of demagnetization is to eliminate unwanted magnetic fields. For example, magnetic fields can interfere with electronic devices such as cell phones or computers, and with machining by making cuttings cling to their parent. [8]
A cassette demagnetizer is a device that removes the magnetic field that accumulates during the use of audio cassettes in cassette decks. [1] [2] The passage of magnetically charged tape over the metallic parts of the tape deck imparts a magnetic polarity that can reduce fidelity in recording and playback.
Scratches and general wear are common causes of demagnetization, but prolonged exposure to magnets can also ruin a card’s magnetic strip. Fortunately, you don’t need to worry about magnetic ...
Magnetic yoke is a hand-held device that induces a magnetic field between two poles. Common applications are for outdoor use, remote locations, and weld inspection. The drawback of magnetic yokes is that they only induce a magnetic field between the poles, so large-scale inspections using the device can be time-consuming.
The Wiegand effect is a macroscopic extension of the Barkhausen effect, [2] as the special treatment of the Wiegand wire causes the wire to act macroscopically as a single large magnetic domain. The numerous small high-coercivity domains in the Wiegand wire outer shell switch in an avalanche, generating the Wiegand effect's rapid magnetic field ...
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