The Foucault Pendulum is a simple yet powerful device that demonstrates the rotation of the Earth. Named after the French physicist Jean Bernard Léon Foucault, it consists of a large pendulum that swings freely in any direction. As it swings, the plane of its motion appears to rotate over time, providing a visual representation of the Earth's rotation beneath it. This phenomenon occurs because the pendulum's motion is not influenced by the Earth's rotation, allowing observers to see the effect of the Earth's movement. The Foucault Pendulum can be found in many science museums and educational institutions, serving as an engaging tool for teaching concepts related to physics and geophysics.