Dowsing

Dowsing, sometimes called divining or water witching, is a generic term for practices which proponents claim empower them to find water, metals, gem stones and hidden objects over a piece of land or a map, usually through fluctuations of apparatus including a Y-shaped twig, rods or pendulum. Some claim to need no apparatus at all but to 'feel' reactions. Repeated tests under controlled conditions have not supported these claims, but they continue to be believed by many people.