| 单词 | gridiron pendulum |
| 释义 | > as lemmasgridiron pendulum gridiron pendulum n. a compensation pendulum composed of parallel rods of different metals. ΘΚΠ the world > time > instruments for measuring time > clock > [noun] > pendulum clock > pendulum pendule1660 pendulum1660 simple pendulum1673 bob-pendulum1685 swing1696 quicksilver pendulum1726 pendle1741 gridiron pendulum1751 mercurial pendulum1786 gridiron1793 wanrest1794 seconds pendulum1795 conical pendulum1813 ticker1821 noddy1844 1751 Prof. Bliss Let. Jan. in Philos. Trans. 1751–2 (Royal Soc.) (1753) 47 493 Your pendulum takes off the effect of heat and cold as well as either the gridiron-pendulum (as it is commonly called) or the quicksilver pendulum. 1854 J. Scoffern in Orr's Circle Sci., Chem. 115 Another means of avoiding this source of error is the gridiron pendulum..—an invention of Harrison. 1877 G. F. Chambers Handbk. Descr. Astron. (ed. 3) viii. 771 Gridiron compensation pendulum. < as lemmas |
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