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dc.contributor.authorMansuripur, Masud
dc.date.accessioned2018-03-21T16:40:10Z
dc.date.available2018-03-21T16:40:10Z
dc.date.issued2017-09-07
dc.identifier.citationMasud Mansuripur, "Nature of the electromagnetic force between classical magnetic dipoles", Proc. SPIE 10357, Spintronics X, 103570R (7 September 2017); doi: 10.1117/12.2273216; https://doi.org/10.1117/12.2273216en
dc.identifier.issn0277-786X
dc.identifier.issn1996-756X
dc.identifier.doi10.1117/12.2273216
dc.identifier.urihttp://hdl.handle.net/10150/627076
dc.description.abstractThe Lorentz force law of classical electrodynamics states that the force F exerted by the magnetic induction B on a particle of charge q moving with velocity V is given by F = qV x B Since this force is orthogonal to the direction of motion, the magnetic field is said to be incapable of performing mechanical work. Yet there is no denying that a permanent magnet can readily perform mechanical work by pushing/pulling on another permanent magnet - or by attracting pieces of magnetizable material such as scrap iron or iron filings. We explain this apparent contradiction by examining the magnetic Lorentz force acting on an Amperian current loop, which is the model for a magnetic dipole. We then extend the discussion by analyzing the Einstein-Laub model of magnetic dipoles in the presence of external magnetic fields.
dc.language.isoenen
dc.publisherSPIE-INT SOC OPTICAL ENGINEERINGen
dc.relation.urlhttps://www.spiedigitallibrary.org/conference-proceedings-of-spie/10357/2273216/Nature-of-the-electromagnetic-force-between-classical-magnetic-dipoles/10.1117/12.2273216.fullen
dc.rights© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.en
dc.titleNature of the electromagnetic force between classical magnetic dipolesen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Coll Opt Scien
dc.identifier.journalSPINTRONICS Xen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-09-13T22:42:30Z
html.description.abstractThe Lorentz force law of classical electrodynamics states that the force F exerted by the magnetic induction B on a particle of charge q moving with velocity V is given by F = qV x B Since this force is orthogonal to the direction of motion, the magnetic field is said to be incapable of performing mechanical work. Yet there is no denying that a permanent magnet can readily perform mechanical work by pushing/pulling on another permanent magnet - or by attracting pieces of magnetizable material such as scrap iron or iron filings. We explain this apparent contradiction by examining the magnetic Lorentz force acting on an Amperian current loop, which is the model for a magnetic dipole. We then extend the discussion by analyzing the Einstein-Laub model of magnetic dipoles in the presence of external magnetic fields.


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