SQuID
Superconducting Quantum Interference Device - a device which is capable of nanometer-resolution of microvolt discharges over a meter distance, or better. Designed based on the relatively crude quantum engineering practices of the 2nd century a.t., they are commonly still found in cheaply designed consumer electronics where greater precision is not needed, such as latch sensors or activation zones.
 
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Development Notes
Text by John B

Initially published on 30 June 2003.