AMPÈRE-HOUR.—A current of one ampère strength
for one hour.
CURRENT, CONTINUOUS.—The flow of electricity
in one direction.
CURRENT, ALTERNATING.—The intermittent flow
in two directions.
CONDUCTOR.—The wire through which the current
passes.
CIRCUIT, PRIMARY.—With transformers, the
conductor or leads attached to the dynamo.
CIRCUIT, SECONDARY.—With transformers, the
conductor from the transformer to the lamps.
C. P.—Abbreviation of Candle-power.
E. M. F.—Abbreviation of Electro-motive force.
LIFE OF INCANDESCENT LAMPS.—The duration of
the filament which produces the light.
POTENTIAL.—Difference of E. M. F., or High
and Low-Tension.
_See also Glossary, or Explanation of Terms_, page 107.