A Pendulum is a symmetrical, non-magnetic object that is attached from a center point to a light weight chain or string. Most often pendulums are made of rings, metal or wooden weights, or crystals. The chain or string is made to a perfect length so that the pendulum can move freely and transfer energy between you and the pendulum.
Pendulums exhibit their own frequencies and stable, rhythmic motion that can act as a receiver or transmitter for other energies. While they can detect and transmit very subtle changes in electromagnetic energies, such as in the case with finding water or minerals underground, they can also be used to tap into our own energies.