What Is a Proton Magnetometer?
A proton magnetometer or proton precession magnetometer is a device which can measure variations in a magnetic field by detecting activity in protons. These devices are used in a number of applications on Earth and also in space exploration. Using a proton magnetometer, ferrous materials can be identified, because they influence the magnetic field around them, in turn triggering the sensitive proton magnetometer. Such devices may be connected to a magnetograph which provides a printed output of variations in the magnetic field being studied.
