Insistent demand for energy-saving industrial and home appliances has recently escalated because of energy and environmental matter and the necessity to comply with new energy consumption regulations.

From DIY levitation tricks to clever braking systems, these swirling paths of electrons keep finding new ways to surprise and inspire.

Stick your hand into a powerful electric induction coil. Nothing happens. Then stick a steel rod into it—the metal becomes red hot almost at once. This phenomenon is the basis of the fast-growing ...