Foucault's Pendulum

Interactions

Drag the pin on the globe to another latitude: at the pole the plane turns once a day, at 30° once in two days, at the equator not at all, and in the south it turns the other way
Drag the bob aside and let go: it is released from rest and scores a star with pointed tips
Tap the bob: the ring magnet brakes it to rest at the centre, then it is pushed out across its old line and scores a figure through the centre
Tap a fallen peg to stand it up again