were no longer used for communication. The wide use of spark-gap transmitters led to the nickname "sparks" for a ship's radio officer.

Metalworking

Electric sparks are used in different kinds of metalworking. Electric discharge machining (EDM) is sometimes called spark machining and uses a spark discharge to remove material from a workpiece. Electrical discharge machining is used for hard metals or those that are difficult to machine with

1.Previous
3.Next