Physics Of Granite Sphere Fountain

Snoeijer1and ko van der weele2.

Physics of granite sphere fountain.

Accepted 20 june 2014. In this paper we explain the working principle behind this levitation. In this paper we explain the working principle behind this levitation. In this paper we explain the working principle behind this levitation.

Physics of the granite sphere fountain jacco h. Kugel fountains can be found all over the world. A striking example of levitation is encountered in the kugel fountain where a granite sphere sometimes weighing over a ton is kept aloft by a thin film of flowing water. It is demonstrated how the viscosity and flow rate of the fluid determine i the remarkably small thickness of the film supporting the sphere and ii the surprisingly long time it takes for rotations to damp out.

Box 217 7500 ae enschede the netherlands ko van der weele department of mathematics university of patras 26500 patras greece received 22 may 2013. Snoeijer physics of fluids group and j m. The kugel fountain shown here involves a massive granite sphere which oats and spins on a thin lm of owing water which is pumped out of a hole at the base of the fountain. The theoretical results compare well with measurements on a fountain holding a granite sphere of one meter in diameter.

American association of physics teachers. The sphere does not float being denser than water. Burgers centre for fluid dynamics university of twente p o. Physics of the granite sphere fountain nasa ads a striking example of levitation is encountered in the kugel fountain where a granite sphere sometimes weighing over a ton is kept aloft by a thin film of flowing water.

We do produce a smaller version of our giant stone sphere fountains but there is a minimum order of 2 500 plus shipping. Ring sculptures that rotate on an axis are also built. It is often made from granite. Physics of the granite sphere fountain jacco h.

The disk in this particular fountain has an estimated radius of r 0 50 m and approximate width 0 30 m.