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armature automatic circuit-breaker battery Becquerel breaking the circuit Callan charcoal points charging a Leyden circuit breaker communication condenser connection Davis described diameter disc discovery elec electro-magnet electroscope electrostatic coil electrotome experiments extra current fact Faraday feet long Fizeau flat spiral galvanic battery Gassiot giving sparks gold leaves hammer helix inch in length increase induced current induction apparatus induction coil instrument instrument-maker insulation intensity invention Leyden jar Lond magnetic core magneto-electric machine Masson and Breguet McGauley mechanical circuit-breaker ment mercury cups Moncel naptha Neef Noad Page coils Page's coil pairs of plates Phil Poggendorff poles powerful coil primary circuit primary coil produced Prof project a spark published remarkable retractile force revolving Ritchie Ritchie's Ruhmkorff coil secondary circuit secondary coil secondary current secondary wire shellac shocks Sill's Journal Silliman's Journal spark-arresting circuit-breaker static electricity Sturgeon's Annals tion tricity vacuuo vibrating Voltaic Voltaic pile wheel
Page 7 - if an ordinary wire of short length be used as the medium of communication between the two plates of a battery of a single pair of metals, no management will enable the experimenter to obtain an electric shock from this wire ; but if the wire which surrounds an electro-magnet be used, a shock is felt each time the
Page 83 - The strong spark in the single long wire or helix, at the moment of disjunction, is therefore the equivalent of the current which would be produced in a neighboring wire, if such second current were permitted
Page 8 - On the influence of a spiral conductor in increasing the intensity of electricity from a galvanic arrangement of a single pair.
Page 105 - a mode of winding the wire in planes perpendicular to the axis, alternately running from the inner to the outer, and from the outer to the inner diameters of the
Page 6 - I could obtain no evidence by the tongue, by spark, or by heating of fine wire or charcoal; nor could I obtain any chemical effects.
Page 6 - if the action of the battery be very intense, a " spark will be given by a short wire.
Page 8 - the electromotor is broken, provided the ends of the wire be grasped, one in each hand.
Page 84 - wire must be well insulated from the hand in which it is held, or the electricity will be conveyed off and no accumulation be obtained.