An electromagnetic clutch is a device that controls power and rotary movement using electromagnetic force generated by its energizing coil. It plays an important role in controlling the power of ...

Humans have built cranes capable of lifting ridiculously heavy objects and moving them around with ease. We have also designed massive ships to transport large, heavy cargo across thousands of miles ...

A gold sphere levitates over a semiconductor with an electrical bias. In new research, engineers at the University of California, Davis, have shown that biased semiconductors can control the Casimir ...