A trio of US researchers claim to have successfully tested predictions that it's possible to harvest clean energy from the ...

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 ...

Scientists know well how conventional materials conduct heat. However, things are not as straightforward under extreme ...

One thing we’d suggest is switching from a disc to a cylinder with magnets placed in a Halbach array to direct as much of the magnetic field into the interior as possible, with coils of copper ...

The researchers then steered their robot along miniature 3D-printed cylinders, creating a highly ... magnetic coils and ...

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 ...