Fig. 4. — Ideal way of Lighting a Room - A. Dynamo ; B. Induction Coil ; C. Condenser ; T T. Illuminated Tubes without Wires
Fig. 4. — Ideal way of Lighting a Room - A. Dynamo ; B. Induction Coil ; C. Condenser ; T T. Illuminated Tubes without Wires
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