A dynamo-electric machine provided with two armature windings, one serving to receive current, as a motor, the other to deliver current, as a generator, to a secondary circuit.
N
N. An abbreviation for the north-seeking pole in a magnet.
Natural Magnet. A loadstone.
Needle. A term applied to a bar-magnet poised horizontally upon a vertical point.
A magnetic needle, or the magnet in a mariner’s compass.
Negative. Opposed to positive.
Negative Electricity. The kind of electricity with which a piece of amber is charged by friction with flannel.
In a galvanic battery or cell the surface of the zinc is charged with negative electricity. Negative electricity, according to the theory of some scientists, really means a deficiency of electricity.
Negative Electrode. The same as Negative Element.