Abstract
THE determination of the direction of the resultant force, at any point, due to a long, thin magnet, is of some importance as a laboratory exercise, and it is necessary to be able to compare the direction which a small needle takes up in its field with the theoretical direction. For such an exercise the bar should be a long, thin magnet as nearly uniformly magnetised as possible. For this case Mr. Vincent's construction gives the theoretical direction very neatly.
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GRAY, A. Construction for the Direction of a Magnetic Line of Force. Nature 59, 32 (1898). https://doi.org/10.1038/059032b0
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DOI: https://doi.org/10.1038/059032b0
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