The Counter Electromotive Force in the Electric Arc ...

½ ampere 1Ampere 2 Amperes 42 volts Abscissæ are hundredths alternating current ammeter F arm B C balance was obtained brass C. P. lamp constant counter E. M. F. constant quantity Copper CORNELL UNIVERSITY LIBRARY counter electromotive force CURRENT ONE AMPERE Current through arc curve difference of potential different distances direct current Edison circuit elec Electrical Formula of Resistance fundamental equation german silver wire graphite inch Iron keep the ammeter keeping the current Length of arc minimum sound negative electrode Normal Equations Observed Ohm's law ohmic resistance Ordinates are volts P. D. of arc Pam QC 52 perature positive carbon r+a+ R+b+ R₂ regarding the counter remain constant resistance of arc right hand tube S. P. Thompson screw thread shown in Fig ß d² Steel t₂ temperature of volatilization tric arc values of resistance vapor varied voltage voltmeter reading W. H. FREEDMAN Weston voltmeter connected Wheatstone bridge Zinc ΙΟ