Detecting Magnets With a Metal Detector
Most recent answer: 09/21/2013
- stacey (age 20)
Metal detectors rely on eddy currents that are induced in metals by a coil driven by a radio frequency oscillator. These induced currents in turn produce a small magnetic field that can be sensed. Metalic magnets made of iron or iron alloyed with neodymium or cobalt have large conductivities and should be easily sensed. Ceramic-ferrite magnets on the other hand have almost no conductivity and thus won't show up. You might try an experiment using both types. Tell us your result.
(published on 09/21/2013)