Joined: 21.11.2023   
Metal Detector02             
in Blockchain since 2017
They will detect all conductive metals, including pretty much any grade of steel. A metal detector basically uses an electric current driven through a coil to generate a magnetic field. Whenever a conductive material is brought close enough to the detector, it disturbs the shape of the field (because induced current is transported along the surface of the metallic object). The detector is able to sense this change of shape of the field (i.e. "change in flux"), and give off a signal. However, the ability to detect metals depends on: 1) The amount of metal present, 2) How close it is to the detector, and 3) How conductive the metal is. Gold, silver and copper are very conductive. Aluminum less... iron, zinc and lead less so. Also, heavily corroded or coated metal objects will have less of an "electromagnetic signature" than clean, fresh samples.
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