Clipart tagged: ‘copper oxide’

"Edison cell, type RR. The electrolyte used is caustic soda, the positive element zinc, and the negative element copper oxide. The Edison cell is suitable for large stationary gas engine ignition, ralroad crossing signals, electroplating, fire alarms, telephone cicuits, etc." -Hawkins, 1917

Edison Cell

"Edison cell, type RR. The electrolyte used is caustic soda, the positive element zinc, and the negative…

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