Helmholtz Coil
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A Helmholtz coil consists of two circular coils of radius with a common axis placed symmetrically in parallel planes at and , separated by the distance . Both coils carry electrical currents flowing in the same direction. To maximize the homogeneity of the magnetic induction at the center of the coils, the separation distance is set equal to the radius of the coils, .
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Contributed by: Thomas Koeppel (March 2011)
Open content licensed under CC BY-NC-SA
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For more information on Helmholtz coils, see the following references.
J. D. Jackson, Classical Electrodynamics, 3rd ed., New York: Wiley, 1998
E. M. Lifshitz and L. D. Landau, The Classical Theory of Fields, Vol. 2, 4th ed., Oxford: Butterworth-Heinemann, 1980
E. M. Lifshitz, L. D. Landau, and L. P. Pitaevskii, Electrodynamics of Continuous Media, Vol. 8, 2nd ed., Oxford: Butterworth-Heinemann, 1984
Helmholtz Coil Manual from ETS-Lindgren
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