coil

Footage of the Tesla coil in action as it conducts electricity.

On Shot of Swan Engineering Company from outside. Man in white shirt…

Shot of worker in factory handling steel wire. Narrator explains that…

Instructional video on the making of piston rings (continued).CU of…

Producing electric current by spinning a coil attached to a light bulb…

A man places a magnet under a piece of cardboard. He is surrounded by…