For some more inverted pendulum fun, do check out this simple linear sled. We did cover dRehmFlight a little while ago regarding the suspended pendulum, which may also worth a look.

The Foucault Pendulum illustrates the rotation of the earth. It is not constrained to stay in a fixed plane like a clock pendulum, but instead its ordinary pendulum motion is free to change ...

A pendulum is a tool typically made of a small, weighted object such as a crystal, stone, or piece of glass or metal tied to a string, chain, or cord. You can buy a pendulum from a spiritual shop ...