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A Shobt History of the Abo
i Striking tiie Arc and Sudden Variations of Current
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alternating current amperes apparent resistance appeared arc lamp axis back E.M.F. battery Blondel burning candle power change of current change of P.D. charcoal circuit connecting the P.D. cored carbons cored positive carbon crater light cross-section current and length current flowing current increases curves in Fig diameter diminishes diminution direct current direction dynamo Edlund Electric Arc Electrical Electrician electrodes equation experiments exploring carbon fall of potential flame galvanometer given current given length greater hard crater Hence hissing arc hissing point large currents length of arc light emitted light received Luggin measured millimetres negative carbon nett obtained ohms P.D. and current P.D. between Carbons P.Ds Peukert Prof shape silent arc small currents smaller soft carbon Solid Carbons 11/9 solid negative solid positive carbon straight line surface Table temperature third carbon total light vapour film varied various Constant Currents volatilisation voltmeter Wheatstone's bridge