Definitions for "Search coil"
a coiled conductor, usually of known area and number of turns, that is used with a flux meter to measure the change of flux linkage with the coil
A mechanical and electrical component, consisting of wire coils and tuned circuits that transmit and receive the R.F.electro-magnetic signal from the metal detector, to the target and then back again for the purpose of sensing buried metallic objects.
The commonest way of measuring magnetic fields at power frequencies. A coil of wire has a voltage induced in it by an alternating magnetic field.