But Lancaster's theory falls apart when lozohodets shows the same strange "invisible water finding reflex" and without the help of twig. A metal ball suspended on a string indicates underground water long before muscle fatigue arises. Therefore, modern science recognizes the possibility of the existence of a certain kind of "radiation" coming from an invisible source of water. Lozohodets experiencing a slight change of tone muscles of the hand and a stick just amplifies this reaction. Some dowsers claim that their hands were shaking and facial muscles contract when they pass over the water. Tickling in the soles - another symptom. It was noted by some and a feeling of suffocation. But the study's ability to find underground water, "see through the thickness of the earth" have never been particularly thorough and deep. Nature "radiation", which acts on the dowser with a certain force, still remains a mystery. You can call it electricity, if you like, or cosmic rays. Science does not know.