Induction Coils: How Made and how Used

acidulated water action anode apparatus arrangement attached axis battery circuit battery current Bichromate binding screws brass bulbs calorific spark 71 carbon points cathode centre coating color compound battery Condenser Contact Breaker convoluted tube copper cylinder deflection described ebonite effects elec electric current electrified wire electro-magnet electrodes employed exciting fluid experiments fixed flame Galvanic Battery galvanometer glass vessel globe gutta gutta-percha helix holes ignited Induced Current insulated Intensity Coil iron bar layer of wire light magnet ment metal needle negative element obtained oil of vitriol opposite paper pedestal percha pillar placed platinum screw platinum wires poles porous cell position Primary Coil Prof reel ends rosin round Secondary Coil Secondary Wire seen shellac shown in Fig side solution spark will pass spring stream of sparks sulphuric acid surface tery tinfoil tricity trodes uranium glass vacuum tube varnish violet color wheel William Cain zinc plate