The invisible fields that flow from the north pole to the south pole of a magnet are known as?

The invisible fields that flow from the north pole to the south pole of a magnet are known as magnetic flux lines. These flux lines represent the direction and strength of the magnetic field generated by the magnet. They visually and conceptually depict how the magnetic forces are distributed in space, indicating the path that a magnetic force would take. The density of these lines in a given area also corresponds to the strength of the magnetic field: the closer the lines are to each other, the stronger the magnetic field in that region.

Furthermore, understanding magnetic flux lines is essential for comprehending how magnets interact with other materials and fields. This knowledge applies to various fields, from engineering to medical imaging, where magnetic resonance relies heavily on the principles of magnetism and the behavior of magnetic fields. The distinction between these lines and other concepts—such as electrical current or voltages—is critical, as they pertain to different physical phenomena within the realm of electromagnetism.