Does Earth Get Dizzy?

Today is Earth’s Rotation Day. The Earth spins on its axis, like a globe. It takes 24 hours, or 1 day, to make 1 rotation, but the rotation speed can change slightly. In 18 51, Leon Foucault demonstrated how the Earth rotates, by hanging a heavy ball, and watching its path change. Watching a Foucault Pendulum swing, is fascinating!