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optical-pumping magnetometer
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optical-pumping magnetometer

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scientific exploration

  • Earth
    In Earth exploration: Magnetic methods

    …are made with proton-precession or optical-pumping magnetometers, which are appreciably more accurate. The proton magnetometer measures a radio-frequency voltage induced in a coil by the reorientation (precession) of magnetically polarized protons in a container of ordinary water. The optical-pumping magnetometer makes use of the principles of nuclear resonance and cesium…

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