56 ELECTRIC DISCHARGES, WAVES AND IMPULSES.
and, subtracting (8) from (9), gives

This equation is so complex in % that it is not possible to cal-
culate from the different values of t the corresponding values of /;
but inversely, for different values of i the corresponding values
of t can be calculated, and the corresponding values of i and t,
derived in this manner, can be plotted as a curve, which gives the
single-energy transient of the ironclad magnetic circuit.

00000069-1.jpg
Such is done in Fig. 29, for the values of the constants:
r - .8,
a - 4 X 10»,
c - 4 X 104,
b - .6,
n«300.