Spring Jack Cut-out.
A cut-out, of the general construction of a spring jack, q. v., except
that a simple insulating plug or wedge is used in place of the
metal-faced wedge with its connections of the regular spring jack. The
insertion of an insulating wedge opens the circuit, which on its removal
is closed. The regular spring jack wedge will operate in the same way,
if its connections are kept open.
Spurious Voltage.
The voltage in excess of that developed by a secondary battery which is
required in the charging process. It is about .25 volt.
Square Wire.
Wire whose cross-section is a square. It has been used of iron for
building up the cores of armatures for dynamos or motors, for which it
is peculiarly suitable, and also of copper as a winding for armatures.
Staggering. adj.
When the brushes of a dynamo are set, one a little in advance of the
other on the surface of the commutator, they are said to be set
staggering. It is used to get over a break in the armature circuit.
State, Electrotonic.
A term expressing an abandoned theory. Faraday at one time proposed the
theory that a wire had to be in the electrotonic state to produce
electro-motive force by movement through an electric field. Any such
idea was ultimately abandoned by Faraday.
Static Breeze.
The electric breeze obtained by the silent discharge of high tension
electricity.
Static Electricity.
Electricity at rest or not in the current form ordinarily speaking. The
term is not very definite and at any rate only expresses a difference in
degree, not in kind. The recognition of the difference in degree has now
to a great extent also disappeared.
Station, Central.
The building or place in which are placed electrical apparatus, steam
engines and plant supplying a district with electric energy.
Station, Distant.
The place at the further end of a telegraph line, as referred to the
home station.
Station, Home.
The end of a telegraph line where the operators using the expression are
working.