Jean-Bernard-Léon Foucault (1819-1868) was a French physician, physicist and naturalist. In 1850, he measured the velocity of light.
Foucault Pendulum
Deutsches Museum
Munich
Germany
In the years 1850 and 1851, he demonstrated the daily rotation of the Earth about its axis using a pendulum. The famous "Foucault's Pendulum" experiment took place in 1851 in the Pantheon in Paris. The Pendulum wire was 67 m long and pendulum ball weighed 28 kg.
