[Trhm-Go] ical cable, after extending downward

[Merendino]

Odes immediately above the balloon, the envelope will be torn to shreds
and a violent explosion of the gas will be precipitated. But as a matter
of fact, it is extremely difficult to place a shrapnel shell so as to
consummate this end. The range is not picked up easily, while the timing
of the fuse to bring about the explosion of the shell at the critical
moment is invariably a complex problem. One favourite method of finding
the range of a balloon is shown in the accompanying diagrams. The
artillery battery is at B and the captive balloon, C, is anchored at A.
On either side of B and at a specified distance, observers O1 and O2
respectively are stationed. First a shell is fired at "long" range,
possibly the maximum range of the gun. It bursts at D. As it has burst
immediately in the line of sight of B, but with the smoke obscured by
the figure of the balloon C, it is obvious to B that the explosion has
occurred behind the objective, but at what distance he cannot tell. To
O1 and O2, however, it is seen to have burst at a considerable distance
behind C though to the former it appears to have burst to the left and
to the second observer to the right of the target. Another shell, at
"short" range, is now fired, and it bursts at E. The explosion takes
place in the line of sight of B, who knows that he has
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