= pendulum, n. 1a. Obsolete.
| 单词 | θ95403 |
| 释义 | the world > time > instruments for measuring time > clock > [noun] > pendulum clock > pendulum (18) pendule1660 = pendulum, n. 1a. Obsolete. pendulum1660 A rod, cord, wire, etc., with a weight or bob at or near one end, suspended from a fixed point so as to swing or oscillate freely under the… simple pendulum1673 A pendulum consisting only of a bob suspended by a cord or wire, spec.: (a) (in a clock) one which is not equipped with a mechanism that… bob-pendulum1685 a pendulum with a bob or bobs. swing1696 A pendulum. Obsolete. quicksilver pendulum1726 = mercurial pendulum n. at mercurial, n. adj.compounds. pendle1741 British regional. A pendulum. gridiron pendulum1751 a compensation pendulum composed of parallel rods of different metals. mercurial pendulum1786 a compensation pendulum with a cylindrical bob containing mercury, whose upward expansion by heat counteracts the lengthening of the rod. gridiron1793 Short for gridiron pendulum n. at compounds. wanrest1794 The pendulum of a clock. seconds pendulum1795 a pendulum of such a length as to oscillate once every second; a pendulum ‘beating seconds’. conical pendulum1813 a pendulum so contrived that the bob revolves in a circle, the rod thus describing a cone. ticker1821 Something that ticks. The pendulum or escapement of a clock or watch; also (slang) a watch (rarely, as in quot. 1910, a clock). noddy1844 An inverted pendulum fitted with a spring which tends to restore it to a vertical position. Obsolete. Subcategories:— vibration of (1) — associated parts (2) |
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