Metal Detectorist
Oscillation, Magnetic field, Eddy current, Magnetometer
978-620-1-87063-5
6201870636
92
2012-11-07
34.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A metal detector is a device which responds to metal that may not be readily apparent.The simplest form of a metal detector consists of an oscillator producing an alternating current that passes through a coil producing an alternating magnetic field. If a piece of electrically conductive metal is close to the coil, eddy currents will be induced in the metal, and this produces an alternating electric field of its own. If another coil is used to measure the electric field (acting as a magnetometer), the change in the magnetic field due to the metallic object can be detected.
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