We may receive a commission on purchases made from links. There is, perhaps, not a single device in the tool box of the Average Joe that gets used quite as much as the trusty screwdriver. The handy ...

As in an electromagnet, yes.<BR><BR>Lets say I have a small steel cylinder which is 5mm in diameter, and 5mm in length. I wrap a wire around it and apply current. How much power (or current or ...

Spintronics devices will be key to realizing faster and more energy-efficient computers. To give us a better understanding of how to make them, a Kobe University team now showed how different ...

In a remarkable leap for quantum physics, researchers in Japan have uncovered how weak magnetic fields can reverse tiny ...