This magnetometer measures the resonance frequency of the protons in a magnetic field by using nuclear magnetic resonance (NMR). When a polarizing DC current is sent through a solenoid, it creates high magnetic flux around the hydrogen-rich fuel like kerosene and some of the protons get aligned with this flux.

How does a magnetometer detect?

A magnetometer is a device that measures magnetic field or magnetic dipole moment. Some magnetometers measure the direction, strength, or relative change of a magnetic field at a particular location.

How does phone magnetometer work?

How it Works. Smartphones come equipped with a magnetometer so that your phone can sense its orientation in space, and use basic apps like the Compass App to determine your location with respect to Magnetic North (or South!). The way this is done is through an internal chip that contains a 3-axis magnetometer.