The electric strength of air at atmospheric pressure under alternating and continuous potentials .. . Fiq-2-O. fV^. 32 IVPINAL EXPERIMENTS (1) Relation between critical surface intensity and, dia-meter of the wire for alternating current: In Table (5) aregiven the results of observations on six sizes of wire in atube cm. in diameter. The first column gives the wirediameter in centimeters, the second column the density fac-tor, &,as obtained from Peeks relation S = (Formula 4)273+t and the third column the primary volts. V, the critical volt-age (maximum) is obtained by multiply
The electric strength of air at atmospheric pressure under alternating and continuous potentials .. . Fiq-2-O. fV^. 32 IVPINAL EXPERIMENTS (1) Relation between critical surface intensity and, dia-meter of the wire for alternating current: In Table (5) aregiven the results of observations on six sizes of wire in atube cm. in diameter. The first column gives the wirediameter in centimeters, the second column the density fac-tor, &,as obtained from Peeks relation S = (Formula 4)273+t and the third column the primary volts. V, the critical volt-age (maximum) is obtained by multiplying the primary voltageby the ratio of transformation and the peak factor. The re-lation E = _V . a logeJ (Formula 1) was used in calculating the critical surface intensity, E. The results are limited in number as most of the earl-ier observations had to be discarded, owing to the use of thepotential regulator to control the primary voltage. It wasfound that the wave shape was dependent on the position ofthis regulator and as the oscillograms were all taken for oneposition only, the value of the peak
Size: 1804px × 1384px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectatmosphericpressure
