Retrieving "Proton Spin" from the archives

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1. Magnetometer

   Linked via "proton spin"

   Proton Precession Magnetometers (PPM)
   PPMs, also known as Proton Free-Precession Magnetometers, are scalar instruments that measure the total magnetic field magnitude by exploiting the quantum property of proton spin alignment. A coil containing a proton-rich fluid (often water or kerosene) is subjected to a strong, temporary polarizing magnetic field, causing the [hydrogen nuc…