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magnetic_field_strength

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magnetic_field_strength [2017/03/23 15:03]
Dr Stan Zurek +
magnetic_field_strength [2019/06/03 18:29] (current)
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 It is shown in the literature that magnetic field strength at a given point in space can be defined as the mechanical [[force]] acting on [[unit pole]] at the given point.[(Mansfield)][(Bakshi)] However, calculation of force requires $B$, which depends on the properties of medium. Indeed, the original experiment performed by Biot and Savart involved physical forces acting on wires.[(Biot>​[[http://​www.ampere.cnrs.fr/​ice/​ice_book_detail-fr-text-koyre_ampere-ampere_text-7-2.html|Jean-Baptiste Biot and Felix Savart. Note sur le magnetisme de la pile de Volta. Ann. Chim.Phys., 15:​222–223,​ 1820]])] It is shown in the literature that magnetic field strength at a given point in space can be defined as the mechanical [[force]] acting on [[unit pole]] at the given point.[(Mansfield)][(Bakshi)] However, calculation of force requires $B$, which depends on the properties of medium. Indeed, the original experiment performed by Biot and Savart involved physical forces acting on wires.[(Biot>​[[http://​www.ampere.cnrs.fr/​ice/​ice_book_detail-fr-text-koyre_ampere-ampere_text-7-2.html|Jean-Baptiste Biot and Felix Savart. Note sur le magnetisme de la pile de Volta. Ann. Chim.Phys., 15:​222–223,​ 1820]])]
  
-Therefore, the forces acting on two magnetised bodies will be different if they are placed in air (which is [[paramagnetic]]) or in water (which is [[diamagnetic]]). This difference will be directly proportional to the relative permeabilities of the involved media. However, the $H$ produced around the wire (Fig. 2) will be mathematically identical.+Therefore, the forces acting on two magnetised bodies will be different if they are placed in oxygen ​(which is [[paramagnetic]]) or in water (which is [[diamagnetic]]). This difference will be directly proportional to the relative permeabilities of the involved media. However, the $H$ produced around the wire (Fig. 2) will be mathematically identical.
  
 ===== See also ===== ===== See also =====
magnetic_field_strength.txt · Last modified: 2019/06/03 18:29 (external edit)

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