10,000 pound Rotating Giant Stone Ball - 5 Ton Floating Granite Ball - Kugel Fountain

A kugel fountain also called a "floating" sphere fountain is a water feature or sculpture where a sphere sits in a fitted hollow in a pedestal, and is supported by aquaplaning on a thin film of water. Pressurized water flows between the sphere and socket, creating a mechanical hydro static bearing that is nearly friction less. The sphere can weigh thousands of kilograms, but the efficient bearing allows it to be spun by the force of a hand. The sphere does not float, being denser than water; it is often made from granite. The hydraulics of the fountain can be controlled so that the axis of rotation of the sphere changes continually.
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