A Yablochkov candle (sometimes electric candle or Jablochkoff candle) is a type of electric carbon arc lamp, invented in 1876 by the Russian electrical engineer Pavel Yablochkov. == Design == A Yablochkov candle consists of a sandwich of two electrodes, which are long carbon rods, approximately 6 by 12 millimetres in cross-section, separated by a block of inert and insulating material such as plaster of Paris or kaolin.
A Yablochkov candle (sometimes electric candle or Jablochkoff candle) is a type of electric carbon arc lamp, invented in 1876 by the Russian electrical engineer Pavel Yablochkov. == Design == A Yablochkov candle consists of a sandwich of two electrodes, which are long carbon rods, approximately 6 by 12 millimetres in cross-section, separated by a block of inert and insulating material such as plaster of Paris or kaolin.
Source: Wikipedia "Yablochkov candle" · CC BY-SA 4.0
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