To find the north and south pole of a magnet, place a compass near one end or one face of the magnet. If the compass needle’s N-marked end points toward that surface, the tested surface is the magnet’s south pole.

Demagnetization is the process of reducing or removing unwanted residual magnetism from a material, workpiece, tool, or component. In manufacturing, the demagnetization process is important because residual magnetism can attract metal chips, affect machining quality, interfere with welding, disturb coating

Magnetic field lines point from the north pole to the south pole outside a magnet. Inside the magnet, they return from the south pole to the north pole. This creates a closed loop. The easiest way to remember it is:

Recently, many Amazon sellers have run into confusion during the “magnetic product” review process. Amazon often asks for a magnetic testing report that complies with IATA standards, and some review notes specifically mention measuring the magnetic field strength (in gauss)

Magnets come in various grades, especially for neodymium magnets (NdFeB). The term “magnet grades” typically refers to the material’s (BH)max or maximum energy product, which is a key value for comparing the strength of neodymium magnet grades. While magnet grades