--_Revue Industrielle._
* * * * *
A NEW ELECTRIC BALLISTIC TARGET.
The electrical target usually employed in determining velocities of
projectiles consists of a wooden frame on which is strung a copper
wire so as to make a continuous circuit arranged in parallel vertical
lines about one inch or one and one half inches apart.
It frequently happens that a projectile will pass through this target
without breaking the circuit, either by squeezing between the wires or
because, when last repaired, the target was short-circuited unnoticed,
so that the cutting of the wires did not break the circuit. The repair
of this target takes considerable time.
_______________________________________________________
| {
| +-------------__ --------------__---------------- }
| | _ // \\ // \\ } {
| | |_| || C_{0} || A || || || A { }
| | P \\ // \\ // } {
| +------------- --------------- ---------------- }
| F {
|_______________________________________________________}
Plan.
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