His first experiments involved driving a simple pendulum with a pulse motor ... which powers two 60-tooth gears responsible for keeping track of seconds, as well as a pair of larger gears that ...

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 ...

As the pendulum swings once per second, it lets the escapement gear turn one notch forward at a time, turning the gears of the clock which drive the hands. It’s powered with a falling weight in ...