The Crusader Radulph of Caen expressed doubts about the discovery of the Holy Lance of Antioch during the First Crusade. The drawing at left shows Adhemar, bishop of Le Puy, carrying the Lance in battle outside the gates of Antioch.
Dowsing, the art of searching for water or minerals using a hand-held pendulum, may really work, according to an Australian engineer. Frank Irons of the University of New South Wales has analysed the chaotic swings of dowsing pendulums. His analysis shows that diviners might be able to detect ore deposits by the variations in the force of gravity they produce (European Journal of Physics, vol 11, p 107).