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"Ring armature of four pole dynamo; diagram of winding and connections, showing direction of the indced currents. the currents in the winding under the upper N and S poles are opposed to each other and flow to the external circuit by the positive brush 1, and back to this half of the armature by the negative brushes 3 and 4...The armature is said to be 'cross connected.' " -Hawkins, 1917

Ring Armature

"Ring armature of four pole dynamo; diagram of winding and connections, showing direction of the indced…

"When several cells are conected so that the positive plate of one is joined to the negative plate of the next...they are said to be grouped or joined in series." -Avery 1895

Series Connection

"When several cells are conected so that the positive plate of one is joined to the negative plate of…

"Where a motor is connected with the electric circuit of a dynamo...and the armature of the dynamo is rotated by mechanical power in opposition to the electromagnetic force, an electric current is generated, which tranverses the motor and causes its armature to rotate..." -Atkinson 1903

Connected dynamo and motor

"Where a motor is connected with the electric circuit of a dynamo...and the armature of the dynamo is…

A test tube stoppered and connected to an inverted beaker, that will be used to collect the gas generated by the heating of the elements and/or compounds in the test tube.

Heated Test Tube

A test tube stoppered and connected to an inverted beaker, that will be used to collect the gas generated…

"...or in a number of [leyden] jars connected together as a Leyden battery." -Atkinson 1903

Leyden Battery

"...or in a number of [leyden] jars connected together as a Leyden battery." -Atkinson 1903

Two arrangements of pulley: crossed belt and uncrossed belt. The pulleys are constructed with two circles that have the radii labeled and tangent lines drawn (strings).

Pulley

Two arrangements of pulley: crossed belt and uncrossed belt. The pulleys are constructed with two circles…

Connected test tubes, with one being heated.

Connected Test Tubes

Connected test tubes, with one being heated.

Two connected test tubes designed to facilitate the collection of gas generated by the top test tube.

Connected Test Tubes

Two connected test tubes designed to facilitate the collection of gas generated by the top test tube.