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单词 seconds pendulum
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seconds pendulum
seconds pendulum n. a pendulum of such a length as to oscillate once every second; a pendulum ‘beating seconds’.
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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
1795 C. Hutton Math. & Philos. Dict. II. 207 The length of a Pendulum, so measured..that it will perform each vibration in a second of time, thence called the second's Pendulum.
1837 W. Whewell Hist. Inductive Sci. II. 283 Determining the length of the seconds' pendulum in different latitudes.
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