Léon Foucault
18 September 1819 — 11 February 1868
Jean Bernard Léon Foucault was a French physicist who invented the Foucault pendulum, a device demonstrating the effect of Earth's rotation. He also made an early measurement of the speed of light, discovered eddy currents, and is credited with naming the gyroscope.
A memorial on Digital Cemetery, an endless map you can explore. This grave stands at coordinates 5, 15.