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Metal Detecting - Gold Prospecting - Find Metal - Find Gold Effective Prospecting - Prospecting Success - Detecting Guide - Treasure Detecting ![]() A pulsing current is applied to the coil, which then induces a magnetic field shown in blue. When the magnetic field of the coil moves across metal, such as the coin in this illustration, the field induces electric currents (called eddy currents) in the coin. The eddy currents induce their own magnetic field, shown in red, which generates an opposite current in the coil, which induces a signal indicating the presence of metal. There are certain features needed for certain places the device is go........ Read More Search
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