Current-meter. An apparatus for indicating the strength of a current, such as an ammeter.
Current, Oscillating. A current periodically alternating.
Current, Periodic. A current with periodically varying strength or direction. A current alternating periodically.
Current, Polarizing. A current which causes polarization.
Current-reverser. A switch or other contrivance for reversing the direction of a current in a conductor.
Current, Undulating. A current whose direction is constant but whose strength is continuously varying.
Currents, Eddy. Useless currents in an armature, in the pole pieces, and in the magnetic cores of dynamos and motors. They are created by the high speed of the armature in its rotation, or by other electric currents induced by the armature’s motion through magnetic fields.
Currents, Faradic. Induced currents. They take their name from Michael Faraday, the original investigator of the phenomena of electro-magnetic induction. The secondary or induced electro-magnetic currents and their accompanying phenomena.
A series of alternating electro-static discharges from influence machine, such as the Holtz and Wimshurst.
The simple and commonly understood Faradic currents are those produced in the medical battery, and used in medical therapeutics.