This means that their magnetism is there all the time and cannot be turned on or off as it can with an electromagnet. Converting a magnet to a non-magnet is called demagnetisation. Magnets are ...

and therefore can’t generate that magnetic field. On a much smaller scale, bar magnets have a similar field shape, and it ...

Save guides, add subjects and pick up where you left off with your BBC account. A permanent magnet is always magnetic. It has an invisible magnetic field. Only certain materials, such as iron ...

Magnetic fields can be found near large magnets such as machines using magnetic resonance imaging (MRI's) and nuclear magnetic resonance (NMR's). The health effects of these magnets aren't fully ...

Using an XMC1100 microcontroller development board and a TLV49 3D magnetic sensor, the device is able to track the poles of a magnet in real-time and produce an approximation of what the field ...

Such a magnet has opposing magnetic moments, but has a non-zero spontaneous magnetization in zero magnetic field. When they placed a ferrimagnet on top of their superconductor and created a magnetic ...

The magnetic field lines of a bar magnet can be viewed by using compasses or by shaking iron filings onto a platform above the magnet. Place the magnet on top of the paper in view of the document ...