Radiesthesia describes an ability to detect radiation emitted by a person, animal, object or geographical feature. One definition is "sensitivity to radiations of all kinds emanating from living beings, inanimate objects, mineral ores, water and even photographs".
Practitioners are able to detect the emitted radiation through use of their hands or more typically with dowsing rods or a pendulum.
Teleradiesthesia or Tele-radiesthesia describes this sensitivity to radiation but without the need to be in physical proximity to the subject. Typically a practitioner will use an instrument such as a pendulum to perform analysis based on a map or photograph.
Radiesthesia (dowsing, divining) is the sensitiveness held to enable a person with the aid of a divining rod or pendulum to detect things (such as the presence of underground water, the nature of an illness, etc).
Under the influence of various causes such as light, heat, sound, gravity, cosmic, electromagnetic and radioactive rays, chemical energy, disintegration, the action of thought or life, pressure, contact, affinity, colour, etc., all objects and living beings emit radiation that create vibrational fields (also biofield or energetic field) that can be perceived and analysed in order to obtain the information by others.