Trace the development of electromagnetic technology over recent centuries, from early experiments to working equipment and instruments.
1865-1866
1858
1782-1793
1801-1838
1790
1917
1894
1910
1876
1900-1918
1854-1890
1907
1913
1957
1910-1918
1905
1920-1926
1895
1866-1896
1887
1886
1900
1930
1922
1898
1925
1902
1919-1920
1946
1906
1906-1907
1934
1965