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Magnetic field of a linear octupole

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arxiv 2407.18958 v1 pith:D5MLA2H5 submitted 2024-07-15 physics.ed-ph

E. Arribas , I. Escobar , R. Ramirez-Vazquez , A.C. Marti , M. Monteiro , C. Stari , A. Belendez This is my paper
classification physics.ed-ph
keywords magneticfielddependencelinearmomentsoctupoleandroidcancel
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We measure the magnetic field produced by a linear octupole formed by four magnets placed in such a way that both their magnetic moments and their quadrupole moments cancel each other. The magnetic field is measured with the magnetic sensor of a smartphone together with a suitable app, using the Android operating system. The main objective is to determine the dependence of the x-component of the magnetic field with distance and compare with the theoretical result that tells us that this dependence is a quintic decrease.

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