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In electromagnetism, the magnetic susceptibility (from Latin susceptibilis 'receptive'; denoted χ, chi) is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization M (magnetic moment per unit volume) to the applied magnetic field intensity H.
Common sheet metals for shielding include copper, brass, nickel, silver, steel, and tin. Shielding effectiveness, that is, how well a shield reflects or absorbs/suppresses electromagnetic radiation, is affected by the physical properties of the metal.
This is an advantage, because sheet resistance of 1 Ω could be taken out of context and misinterpreted as bulk resistance of 1 ohm, whereas sheet resistance of 1 Ω/sq cannot thus be misinterpreted. The reason for the name "ohms per square" is that a square sheet with sheet resistance 10 ohm/square has an actual resistance of 10 ohm ...
Loudspeakers used in conjunction with computer monitors or other screens are typically shielded magnetically, in order to reduce magnetic interference caused to the screens such as in televisions or CRTs. [6] The speaker magnet is covered with a material such as soft iron to minimize the stray magnetic field. Reluctance can also be applied to:
To calculate the magnetic field generated by permanent magnets, we can use an approach based on the Biot-Savart law applied to finite-size rectangular current sheets. This method involves modeling the magnets as an assembly of such sheets, allowing for the calculation of the three components of the magnetic field B ⃗_z at any point in space.
In contrast, magnetically anisotropic materials will be easier or harder to magnetize depending on which way the object is rotated. For most magnetically anisotropic materials, there are two easiest directions to magnetize the material, which are a 180° rotation apart. The line parallel to these directions is called the easy axis.
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Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics (and moderate-quality photographs) by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define a differentially charged image. [1]