How It Works
foucault pendulum

What is a Foucault Pendulum?

foucault pendulum

First constructed in a Paris cellar in 1851, the Foucault Pendulum demonstrates how the Earth rotates on its axis.

Models of the pendulum are now housed in universities and exhibitions across the globe and it is key to better understanding our planet’s motion.

This video by physics professor Jim LaBelle describes exactly how it works.