Final answer:
Typical applications of portable electromagnetic methods include detecting buried landmines, geophysical prospecting, and security screenings at airports. Electromagnetic induction-based devices detect metals by inducing and analyzing eddy currents on metal surfaces. This technology is also applied in various other fields like medical devices, food technology, and transportation.
Step-by-step explanation:
A typical application of portable electromagnetic methods would be to detect buried landmines for disposal, to conduct geophysical prospecting, or for security screenings at airports. Electromagnetic induction works on the principle that a moving or changing magnetic field can induce an electric current in a conductor. In detecting metals, a device sends out an electromagnetic field which, when interacting with a metal object, induces eddy currents on the object's surface. These currents generate their own magnetic field, which is detected and analyzed by the device, revealing the presence of the metal object. This technology is crucial for safely locating and disarming landmines, finding valuable minerals in the ground, and security procedures to ensure public safety.
Other notable applications include transmitting electrical signals across barriers in medical devices like cochlear implants, heating food in microwave ovens, imaging the brain using magnetic resonance imaging (MRI), and more derivatives in technologies such as graphics tablets, electric vehicles, and transcranial magnetic stimulation.