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 ...
A permanent magnet is always magnetic. It has an invisible magnetic field. Only certain materials, such as iron, feel a magnetic force. Permanent magnets can come in lots of different shapes and ...
We’re used to Hall effect devices as proximity sensors in mechanical systems, used to provide detection of something that has a magnet attached to it. However it’s easy to forget that the ...
Magnetic levitation has not quite revolutionized the world of transit the way some of us might have hoped ... a number of coils to produce a magnetic field to levitate the 3D printed plastic ...
Related: How a giant sunspot unleashed solar storms that spawned global auroras that just dazzled us all Understanding the solar cycle is important for understanding the magnetic field's reversal.