Minutes of proceedings of the Royal Artillery Institution (1858)
Great Britain. Army. Royal Artillery Institution · Woolwich, Eng., : The Institution · leaf 28
ting of the string till it was pierced. This time ought to correspond to that employed by the projectile in passing the 50 yards. It was tried at Liege in 1840, and gave velocities too great. The error is attributed to the friction of the thread on the pulleys, the fall of the screen not coinciding… … Ballistic Bendnlums. 8. In order to avoid the difficulty experienced in measuring the time of flight of a body in rapid motion, the idea was conceived of lessening the velocity by firing the projectile against another body heavier than itself, to which it would communicate the quantity of motion…
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