Foucault pendulum - 15in

This simple device with a black stand is the perfect size to sit on your desk, with its rhythmic motion inscribing beautiful patterns in the sand. Creates beautiful patterns on sand Sand pictures are written and rewritten for over five minutes Instruction manual included Makes a lovely gift for anybody When Leon Foucault set up a simple experiment in 1851, little did he know the importance of what he was about to tell the world? While it was path breaking, brave and a novelty at that age, it's totally different now - You don't have to convince anybody anymore that the earth actually rotates around the sun! However, the Foucault's Pendulum has oscillated for over 160 years and not just becomes a display piece but a work of art at your office desk or dining table.