All times in UTC ·
Dashed edge = started before, or continues beyond, this day
Events on Friday 20 January 1775 1
1775 – 1836Andre-Marie Ampere (1775-1836)Died 10 June 1836, aged 61French physicist and mathematician who founded the science of classical electrodynamics, now called electrodynamics. The SI unit of electric current, the ampere, is named in his honor.