Electrets produce a semi-permanent static electric field, similar to how a magnet produces a magnetic field. The ones in microphones are very small, but in the video after the break [Jay Bowles ...

When one material gains electrons and becomes negatively charged, and another loses electrons and becomes positively charged, a static electric field is created. The most visible result of this is ...

Electrostatic motors have several potentially ... to a proprietary mix that can both multiply the strength of the electric field and insulate the motor’s spinning parts from each other—all ...

Normally electrostatic sparks are very small. If the object has a lot of charge, then these sparks can be hundreds of metres long. Sparks can occur between charged objects and people. Sometimes ...