Radiesthesia is the claimed paranormal or parapsychological ability to detect "radiation" within the human body. According to the theory, all human bodies give off unique or characteristic "radiations" as do all other physical bodies or objects. Such radiations are often termed an "aura".
A practitioner of radiesthesia claims to detect the interplay of these radiations. Thus radiesthesia is cited as the explanation of such phenomena as dowsing by rods and pendulums in order to locate buried substances, diagnose illnesses, and the like. Some radiesthesia practitioners like Israeli mentalist Uri Geller or German astrologer Alexander Rostamí claim that they can help oil companies to find crude petroleum reserves and other natural resources by using paranormal abilities, but this claim has not yet been proven.[1]
The term "radiesthesia" first entered English in the 1930s and was borrowed from the earlier French radiésthesie. The English word is a compound of the prefix radi(o)-, referring to radiation and the rare term aesthesia meaning "perception by the senses", or "the capacity for feeling or sensation", which comes from the ancient Greek aisthesis "a perceiving".
Dr. Solcol W. Tromp wrote about radiesthesia in his 1949 book Psychical Physics. This reference has a bibliography of over 700 titles relating to dowsing and radiesthesia.
Gerald Gardner, in his book Witchcraft Today, 1954, refers to his own anecdotal experiences with radiesthesia as evidence supporting the existence of "Witch Power".
The Pendulum is a monthly publication devoted to radiesthesia. There are other periodicals, publications, books, societies and numerous websites on the topic.