![](https://coimages.sciencemuseumgroup.org.uk/127/579/large_thumbnail_1927_1101__0011_.jpg)
George III's cycloidal pendulum
1762
1762
1762
2000-100 BCE
1761
1761
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1762
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1761
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1705-1737
1762
1761
1761-1762
1761
1986 (replica); 1501-1600 (original)
1762
1762
4000-2001 BCE
1761
1990-96
1888-185
1801-1700
1860-1715
1991-1783 BCE
1791-3
1791-3
1762
1762
1761
1761
1762
1762
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1761
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1762
1761
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1762