The Foucault Pendulum is a physics demonstration instrument used to visually demonstrate the rotation of the Earth on its axis. It provides an effective and engaging way to understand a phenomenon that cannot be observed directly in everyday life.

The apparatus consists of a pendulum suspended from a fixed support and allowed to swing freely. As the pendulum oscillates, its plane of swing remains nearly unchanged while the Earth rotates beneath it. This causes the pendulum’s swing to appear to change direction gradually when observed from the Earth’s surface. The effect provides visible evidence of Earth’s rotation and introduces students to important concepts in classical physics.