American Annual Cyclopaedia and Register of Important Events Volume 27

American Annual Cyclopaedia and Register of Important Events Volume 27

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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. 1888 edition. Excerpt: ...often agitated by the heavy tones of an organ, and this led him to suspend glass dishes, and watch for any effect that might be produced by chords he was able to secure by the combination of different tones. He soon found that certain chords invariably resulted in the forcible agitation of objects at a distance. His earliest mechanism for noting the nniform force of sound-vibrations was a steel bar set full of pins of various lengths; while his first" resonator " or "intensifier " consisted of a shingle screwed to two hollow wooden tubes. The first engine was a simple ring of steel, with 300 pins set into it, and this first wheel ran in an open box, into and through which an observer was free to look while the wheel was in motion. For more than sixteen years Keely pursued his investigations in the effort to work out his discovery, using the two elements water and air in connection with sound-vibrations as the media in which to operate his new force. He began with the simplest possible form of vibrator in a shingle screwed to two hollow wooden tubes, recording the vibrations by means of a steel bar studded with pins of various lengths. The result was surprising: the sympathetic flow induced even by this, the first order of vibratory association, being infinitely more tenuous and penetrating than the electric current. The best idea of what the Keely motor is can probably be obtained from a careful examination made not long since by a disinterested Englishman. He recalls how Tyndall and others have satisfactorily demonstrated that in motion is to be sought the true origin of sound, heat, light, and probably electricity--in a motion that is vibratory, the pulsations of which can be calculated if not explained. The more

Product details

  • 12-17
  • Paperback | 780 pages
  • 189 x 246 x 39mm | 1,365g
  • United States
  • English
  • black & white illustrations
  • 1236960238
  • 9781236960238