Commutator synonyms

The armature carries on its shaft a commutator made of silver slips, and the current is fed into the armature by means of brushes of silver wire.

In this new form of bobbin, the armature consisted of a ring of iron wire wound over with an endless coil of wire and connected to a commutator consisting of copper bars insulated from one another.

The effect is most easily shown by connecting a voltaic cell to a thermopile for a short interval, then quickly (by means of a suitable key, such as a Pohl commutator with the cross connectors removed) disconnecting the pile from the cell and connecting it to a galvanometer, which will indicate a current in the reverse direction through the pile, and approximately proportional to the original current in intensity, provided that the other conditions of the experiment are constant.

Expanding an iterated commutator produces a complicated and long expression.

A group whose commutator factor group is finite can only have finite nilpotent quotient groups.