Traditionally, the most common dowsing rod is a forked (Y-shaped) branch from a tree or bush. Some dowsers prefer branches from particular trees, and some prefer the branches to be freshly cut. Hazel twigs in Europe and witch-hazel in the United States are traditionally commonly chosen.
A pendulum of crystal, metal or other materials suspended on a chain is sometimes used in divination and dowsing. In one approach the user first determines which direction (left-right, up-down) will indicate "yes" and which "no" before proceeding to ask the pendulum specific questions, or else another person may pose questions to the person holding the pendulum. The pendulum may also be used over a pad or cloth with "yes" and "no" written on it and perhaps other words written in a circle. The person holding the pendulum aims to hold it as steadily as possible over the center and its movements are held to indicate answers to the questions. In the practice of radiesthesia, a pendulum is used for medical diagnosis.
Geologists have made claims for the abilities of dowsers, which are difficult to account for in terms of the reception of normal sensory cues. Some authors suggest that these abilities may be explained by postulating human sensitivity to small magnetic field gradient changes.
How Does it Work?
Accurately calibrated music synthesis software has been used to create the exact isochronic beat frequencies required to induce the correct state to enhance dowsing ability.