
Engraving of a demonstration to compare lightning conductor designs
1778-1780
1778-1780
1784
1785-1795
1780
1776
1775-1795
1705-1737
1775-1794
1788
1791
1790-1794
1775-1785
1770-1775
1772
1785
1775-1785
1783-1787
1775
1785
1775
1787
1780
1771
4000-2001 BCE
1790
1785
1668; 1924
1990-95
1610; 1923
1642-1649 (original); 1883 (model)
1788
1790-1794
1936
1790
1770-1780
1776
1776-1780
circa 3000 BCE
1780-1789
1795
1772
circa 1793
1772
1793
1783
1775
1780-1789
1784
1788
1791