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Neodymium magnets and non-magnetic metals
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<blockquote data-quote="Zorgs" data-source="post: 196712" data-attributes="member: 5524"><p>Like Reeks said. The pipe is non magnetic but conductive. Electron flow is induced in the pipe by the moving magnet (these are principles on which an AC motor works) which in turn induces a magnetic field that opposes the magnet's magnetic field. The electron flow is circular around the pipe hence Eddy current (Lenz's Law). The induction principle is Faraday's Law. The opposing magnetic field causes drag and slows the magnet.</p></blockquote><p></p>
[QUOTE="Zorgs, post: 196712, member: 5524"] Like Reeks said. The pipe is non magnetic but conductive. Electron flow is induced in the pipe by the moving magnet (these are principles on which an AC motor works) which in turn induces a magnetic field that opposes the magnet's magnetic field. The electron flow is circular around the pipe hence Eddy current (Lenz's Law). The induction principle is Faraday's Law. The opposing magnetic field causes drag and slows the magnet. [/QUOTE]
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Neodymium magnets and non-magnetic metals
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