The Economic Times

'You are invited to see the Earth turn': In 1851, a French physicist showed people the Earth was rotating using just a giant swinging pendulum

Lon Foucault conducted a groundbreaking experiment that visually confirmed the rotation of the Earth. By observing a swinging pendulum, viewers noticed an apparent change in direction as the Earth rotated beneath it. This striking demonstration provided clear, physical evidence of the planet's axial movement, with the pendulum's rotation rate changing based on latitude. Foucault pendulums remain a captivating way to physically represent Earth's motion to this day.