an apparatus for determining the velocity of a projectile from the amount of deflection produced when it strikes a target that is free to oscillate.
| 单词 | θ107627 |
| 释义 | the world > movement > rate of motion > [noun] > in the physical sciences > measurement of > instrument > for measuring velocity of projectiles (3) ballistic pendulum1764 an apparatus for determining the velocity of a projectile from the amount of deflection produced when it strikes a target that is free to oscillate. gun-pendulum1867 (a) ‘a device employed to determine the initial velocity of projectiles by means of the recoil of the gun’ (Hamersly Naval Encycl. 1881); (b) ‘a… registrar1872 In a particular type of chronograph for timing the flight of a projectile: a rod that is released electromagnetically when the further of two targets… |
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