Filters are used to prevent spikes entering or leaving the equipment through wires, and the devices coupled electromagnetically to space (such as radio-frequency pick-up coils in MRI scanners) are protected by shielding.
electromagnetic spectrum | Electromagnetic tensor | Electromagnetic spectrum | Electromagnetic pulse | Electromagnetic interference | Electromagnetic radiation | electromagnetic radiation | Electromagnetic acoustic transducer | An Endress+Hausser electromagnetic flow meter | Electromagnetic shielding | Electromagnetic Acoustic Transducer (EMAT) |