Search for Buried Treasure With This DIY Magnetometer
Cars That Think
APRIL 26, 2022
So when the coil is pointed north ( and downward, at my northern latitude ), the Earth’s magnetic field adds to the magnetic field created by positive currents in the coil windings; when pointed in the opposite direction, the Earth’s field subtracts. This article appears in the May 2022 print issue as “A DIY Magnetometer.”.
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