This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
GrammeMachine. The Gramme machine or Gramme dynamo an electrical generator designed by Belgian inventor Znobe Gramme in It was the first machine to be used industrially to generate power His innovation was to use many armature windings wound on doughnut shaped armature and switched with many segmented commutator to smooth the output