Armature, Unipolar.
An armature of a unipolar dynamo. (See Dynamo Unipolar.)
Armor of Cable.
The metal covering, often of heavy wire, surrounding a telegraph or
electric cable subjected to severe usage, as in submarine cables.
Synonym--Armature of Cable.
Arm, Rocker.
An arm extending from a rocker of a dynamo or motor, to which arm one of
the brushes is attached. (See Rocker.) Ordinarily there are two arms,
one for each brush.
Articulate Speech.
Speech involving the sounds of words. It is a definition which has
acquired importance in the Bell telephone litigations, one contention,
concerning the Bell telephone patent, holding that the patentee did not
intend his telephone to transmit articulations, but only sound and
music.
Astatic. adj.
Having no magnetic directive tendency due to the earth's magnetism.
Examples are given under Astatic Needle; Circuit, Astatic; and
Galvanometer Astatic.
Fig. 33. NOBILI'S PAIR.