Later designs used electromagnetic sensing, with a transistor in the circuit to turn the solenoid on.
2.
They actually have an additional sense _ an electromagnetic sense _ that operates like a built-in homing device.
3.
Mechanical Gecko " Freelander " comprehensively utilizes the optical, electromagnetic sensing and new communication methods, and optical, mechanical and electronic integration technology.
4.
He is most famous for the discovery of the so-called Ampullae of Lorenzini, special electromagnetic sense organs possessed by the Elasmobranchii ( sharks and rays ), which are located in front of the head and form a network of canals filled with gel.
5.
A 2012 study reviewed ten technologies : bioimpedance spectroscopy, electromagnetic sensing, fluorescence technology, mid-infrared spectroscopy, near infrared spectroscopy, optical coherence tomography, optical polarimetry, raman spectroscopy, reverse iontophoresis, and ultrasound technology, concluding with the observation that none of these had produced a commercially available, clinically reliable device and that therefore, much work remained to be done.
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