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How do metal detectors work since they can detect metals that are not magnetic?

2 hours ago, Brainee said:

How do metal detectors work since they can detect metals that are not magnetic?

They rely on metals being electrically conductive. An AC electromagnet induces eddy currents in the metal object, which alter the net field (from the detector and the metal) close to the object.   

1 hour ago, exchemist said:

They rely on metals being electrically conductive. An AC electromagnet induces eddy currents in the metal object, which alter the net field (from the detector and the metal) close to the object.   

Cool,  thanks for this, often wondered the same thing.

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