
Cooke and Wheatstone’s double-needle telegraph, 1838
1838
1838
4000-2001 BCE
1930 (replica); 1834 (original)
1829
1837
1828
1870-1877
1837
1826
1830 (original); 1967 (model)
1830
1826
1832
1831
1668; 1924
1990-95
1642-1649 (original); 1883 (model)
1610; 1923
2050-1750 BCE
1830-1836
1834-1836
1830
1826
1960-1979
700 BCE; 1931
6000-5000BCE
1845-1964
1600-1500 BCE (original); 1900-1914 (copy)
1979-80
1834
1830
1833
1838
30 CE
1836
1826
30 CE
1834
2686-2613 BCE
1833
1830
1830
1830
circa 1830s
1831
1835
1830
1830
1831
1831