This is a Foucault pendulum in Kisgyor, Hungary. And what is a Foucault pendulum, you ask? It is essentially an experiment that demonstrates the rotation of the Earth. It is named after a French physicist, Léon Foucault. The first one was shown to the public in the Panthéon of Paris in 1851. A 28 kg ball was suspended from the top of the dome by a 67 meter wire. If you set the ball swinging back and forth, its inertia will essentially keep swinging back and forth in the same direction, even as the Earth rotates underneath it. You will find these pendulums in many science museums across the world.
August 11, 2014 at 5:23 pm | Cam Stills | No comment