Popular Electricity and the World's Advocate Volume 5

Popular Electricity and the World's Advocate Volume 5

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ... A vacuum is formed. 'hen the next step is taken air is admitted to the fiist cylinder while a vacuum is formed at the second. The Divining Rod The United States Geological Survey, in 'ater-Supply Paper 255, entitled "Underground 'aters for Farm Use," just reissued, states that no appliance, either mechanical or electric, has yet been devised that will detect water in places where plain common sense and close observation will not show its presence just as well. Numerous mechanical devices have been proposed for detecting the presence of underground water, ranging in complexity from the simple forked branch of witch hazel, peach or other tree to more or less elaborate mechanical or electric contrivances..lany of the operators of these devices, especially those who use the home cut forked branch, are entirely honest in the belief that the working of the rod is influenced by agencies--usually regarded as electric currents following underground streams of water--that are entirely independent of their own bodies, and many people have implicit faith in their own and others' ability to locate underground vater in this way. In experiments with a rod made from a forked branch it seemed to turn downward at certain points independent of the operator's will, but more complete tests showed that this downturning resulted from slight and, until watched for, unconscious muscular action, the effects of which were communicated through the arms and wrists THE HORSE lS MORE COMFORTABLE AND EASIER TO HANDLE UNDER THE FAN'S INFLUENCE to the rod. No movement of the rod fiom causes outside of the bay could be detected, and it soon became obvious that the view held by other men of science is correct--that the operation of the...
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Product details

  • Paperback | 286 pages
  • 189 x 246 x 15mm | 513g
  • United States
  • English
  • black & white illustrations
  • 1236831551
  • 9781236831552