Illustration showing Pohl's commutator 1890
Illustration showing Pohl's commutator: 6 holes filled with mercury were connected by copper wire. Poles of battery are in 1 and 4. To reverse current, b and d, were moved over to make contact with mercury in 5 and 6
Picture No
13913066
Media ID
48515588
Size
5165px x 4061px
(7.0MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive





























