We have already explained, in previous articles, that gaussimeters are special instruments used for magnetic measurement, that is, it inspects and checks the flow density, being one of the most universal devices for this purpose.
Because a magnetic field is invisible, obtaining a complete quantitative representation of it requires the measurement of its force and direction. The ability to do that may sound like science fiction, but thanks to a discovery nearly 140 years ago, we have the tool we now use to determine the strength of magnets.
Before explaining how they work as such, it must be explained that gaussimeters work because of the Hall effect, a phenomenon discovered by Edwin Hall in 1879. In short, Hall discovered that a magnetic field will affect the flow of an electric current. Now, we know that magnetic measurement allows us to determine the force of a force and its impact.
Using this discovery, the Hall sensor was developed. Hall sensors have two different shapes: transverse and axial. A transverse probe is ideal for measuring magnetic fields perpendicular to a flat surface, and an axial probe is ideal for measuring magnetic fields parallel to the probe handle.