Electricity By dimfil Jan 1, 1600 electricus by William Gilbert Jun 1, 1752 Benjamin's Franklin experiment Jan 1, 1791 Galvani published Jan 1, 1820 Orsted and Ampere Jan 1, 1821 Faraday's electric motor Jan 1, 1827 Ohm law Jan 1, 1862 Maxwell electromagnetism theory