| 单词 | gun-pendulum |
| 释义 | > as lemmasgun-pendulum gun-pendulum n. (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 pendulous box with sand-bags to receive the impact of a ball fired from a gun or cannon, and used to determine the strength of powder’ (E. H. Knight Pract. Dict. Mech. 1875). ΘΚΠ society > armed hostility > military equipment > production and development of arms > [noun] > manufacture of firearms and ammunition > instruments newel1611 spanner1639 height-board1672 height-rule1692 star gauge1784 spindle1842 gun-pendulum1867 the world > matter > physics > mechanics > dynamics > [noun] > speed or direction as vector quality > device to measure or record velocity ballistic pendulum1764 tachometer1810 velocimeter1842 velocity-measurer1850 gun-pendulum1867 the world > movement > rate of motion > [noun] > in the physical sciences > measurement of > instrument > for measuring velocity of projectiles ballistic pendulum1764 gun-pendulum1867 registrar1872 1867 W. H. Smyth & E. Belcher Sailor's Word-bk. Gun-pendulum. See Ballistic Pendulum. 1883 G. Mackinlay Text-bk. Gunnery 146 The gun-pendulum has lately been occasionally used in experiments to find the recoil of small arms. < as lemmas |
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