Shifting Magnetic Field. (See [Magnetic Field, Shifting].)
Shock, Electric. The effect upon the animal system of the discharge of an electric current of high potential difference. The voltage is the main element in a shock.
Shoe. As applied to electric railways, the casting employed to bear on the third rail to take in positive current and electro-motive force.
The cast-iron plate of an electric break, which, by magnetism, adheres to another iron surface.
Short Circuit. (See [Circuit, Short].)
Shunt-box. A resistance-box designed for use as a galvanometer shunt. The box contains a series of resistance-coils which can be plugged in or out as required.
Shunt-winding. A dynamo or motor is shunt-wound when the field-magnet winding is parallel with the winding of the armature.
Silver-bath. A solution of a salt of silver used in the electro-plating process.
Silver-plating. Depositing a coating of silver on a metallic surface by the acid of electro-metallurgy.
Silver-stripping Bath. An acid solution used for stripping silver from a metallic surface before re-plating it.