390 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



Figure 10 shows the undamped time-values of the various quantities 

 considered, or the values before applying the damping -factor. The 

 sinusoid u, of 1291 volts amplitude, corresponds, to the projection of 



^ 



>3 B °§ 



J? 



Time. Phase. 



Figure 9. Damping-factors at different time-intervals after release. 



OUq, Figures, on the XOX axis. Similarly, the sinusoid e, of 1291 

 volts amplitude, corresponds to the projection of OEq, Figure 8, on the 

 same axis. The heavy sinusoid /, of 8.16;") amperes amplitude, gives 

 the undamped current, starting positively from zero at 0. The emfs. 



