• The internal components of early batteries that resemble jars are photographed next to each other. Another image shows a closeup of one of the components.
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    [Left] Internal components of early batteries used in Samuel Langley's laboratory experiments. The black cylinder is a mix of carbon and Manganese and forms the cathode of each cell. [Right] In the center of the carbon cylinder, the remaining zinc rod can be seen.

  • The internal components of early batteries that resemble jars are photographed next to each other. Another image shows a closeup of one of the components.

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