At the time, scientists were aware that the Earth rotated, but this 1851 demo provided easy-to-understand proof. Google's doodle, therefore, lets users manipulate the pendulum, setting the time of day ...

The Foucault pendulum which was displayed for many years in the Smithsonian's National Museum of American History was removed in late 1998 to make room for the Star-Spangled Banner Preservation ...

Equipment: A 1.5" diameter wooden ball on a string, a magnetic mount, a rod on a magnetic mount, chalk, a meter stick and a magnetic blackboard or whiteboard. What it does: The pendulum is released ...

Google today is celebrating the 194th birthday of French physicist Léon Foucault with an interactive, homepage doodle of his famous pendulum. The pendulum was used to demonstrate the rotation of the ...