Telescope by Galileo (replica)
1610; 1923
1610; 1923
1775-1799 (original); 1900-1907 (model)
1990-96
1772 (original); 1919 (model)
1705-1737
2000-100 BCE
4000-2001 BCE
1863-7
1893-4
1860-1920
1668; 1924
1642-1649 (original); 1883 (model)
1990-95
1936
300 BCE; 1905-1915
1960-1979
6000-5000BCE
1600-1500 BCE (original); 1900-1914 (copy)
1798 (original); 1977 (model)
2050-1750 BCE
1580-1588; 1930
1845-1964
100-1 BCE; 1501-1600; 1914
1730-1760 (original); 1931-1939 (replica)
1976; 1776
1910-1921
1857-06
8500-2000 BCE
1701-1800
2000-1001 BCE
1701-1800; 1982
1777 (original); 1894 (model)
1856-11
1991-1783 BCE
700 BCE; 1931
circa 3000 BCE
1894 (apparatus); 1742 (date of experiment)
1824 (original); 1891 (model)
10000-5001 BCE
2000-100 BCE
1872-08
1066; 1876
1501-1600; 1972
1920-1923; 1963
1901-1936; 180 BCE
1865-05
8500-2000 BCE
1867-04
2800 BCE
1931; 750-850 CE