The operators swing the detector as they would a skipping rope and as it cuts through the Earth's magnetic field, a small emf is produced which can be measured with a sensitive voltmeter. With the operators standing about 2.5 meters apart, the detector will cut through an area of about 2.25 square meters. The two operators should orientate themselves until the swinging detector cuts the Earth's magnetic field in such a way that the maximum emf is achieved. A sensitive voltmeter or multimeter needed. Instructions included.
