coil of wire, insulated, surrounding a core of
iron, to receive a current of electricity.

Magnet Core. A bar of iron adapted to receive a winding of wire.

Magnet, Field. A magnet in a dynamo. A motor to produce electric
energy.

Magnet, Permanent. A short steel form, to hold magnetism for a long
time.

Magnetic Adherence. The adherence of particles to the
poles of a magnet.

Magnetic That quality of a metal which draws metals. Also
Attraction and the pulling action of unlike poles for each
Repulsion. other, and pushing away of like poles when brought
together.

Magnetic Force. The action exercised by a magnet of attracting
or repelling.

Magnetic Pole. The earth has North and South magnetic poles.
The south pole of a magnetic needle is attracted
so it points to the north magnetic pole; and the north
pole of the needle is attracted to point to the south
magnetic pole.

Magneto-generator. A permanent magnet and a revolving armature for
generating a current.

Maximum Voltage. The final voltage after charging.

Molecule. Invisible particles made up of two or more atoms
of different matter. An atom is a particle of one
substance only.

Morse Sounder. An electric instrument designed to make a clicking
sound, when the armature is drawn down by a
magnet.

Motor-dynamo. A motor and a dynamo having their armatures
connected together, whereby the motor is driven
by the dynamo, so as to change the current into a
different voltage and amperage.

Motor-transformer. A motor which delivers the current like a generator.

Needle. A bar magnet horizontally poised on a vertical
pivot point, like the needle of a mariner's compass.

Negative Amber, when rubbed, produces negative electricity.
Electricity. A battery has positive as well as negative
electricity.

Negative Element. That plate in the solution of a battery
cell which is not disintegrated.

Normal. The usual, or ordinary. The average. In a