Fluxgate magnetometer

A fluxgate magnetometer is a tool that helps us measure the strength and direction of magnetic fields around us. It works just like a magic wand that can detect the presence of magnets.

Inside a fluxgate magnetometer, there is a tiny sensor that is made of two coils of wire. These coils are wrapped around a core made of a material that can be easily magnetized, like iron.

When there is a magnetic field present around the sensor, it causes the core to become magnetized, which in turn affects the coils of wire. The wires will then send a signal to a computer or display that shows us the strength and direction of the magnetic field.

So, if we hold the fluxgate magnetometer over a strong magnet, the sensor will detect it and the display will show us how strong the magnet is and what its direction is. Similarly, it can be used to study the Earth's magnetic field and understand how it changes over time.

Overall, the fluxgate magnetometer is a simple yet powerful tool that helps us explore the magnetic world around us.