A version of the immunoassay called MARIA takes advantage of these devices, while FOCUSS and Minimum Norm methods are used to solve the "Inverse Problem" of these devices. Medically, these devices are used in liver susceptometry tests, while a Finnish team them to develop the first cortical MEG.  A group of these devices were used to measure the spin of the four niobium-coated gyroscopes on Gravity Probe B. The original version of these devices w
A version of the immunoassay called MARIA takes advantage of these devices, while FOCUSS and Minimum Norm methods are used to solve the "Inverse Problem" of these devices. Medically, these devices are used in liver susceptometry tests, while a Finnish team them to develop the first cortical MEG.  A group of these devices were used to measure the spin of the four niobium-coated gyroscopes on Gravity Probe B. The original version of these devices was improved by implementing a fractional-turn geometry, which was developed by James Edward Zimmerman along with this devices' RF version. The earliest version of this device contains a loop with two Josephson junctions in parallel. For 10 points, name these highly sensitive magnetometers, whose acronym suggests a cephalopod.
A version of the immunoassay called MARIA takes advantage of these devices, while FOCUSS and Minimum Norm methods are used to solve the "Inverse Problem" of these devices.
{SQUID} or {Superconducting Quantum Interference Devices}