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    thing the sounds from R were somewhat weaker than before.
  1. The experiments 1+2 were first made unsuccessfully in November 1874. The cause of the failure lay in using the Receiving Magnet R without any vibratory armature S. When an intermittent current is used sounds proceed from the core of the receiving magnet -- but as yet I have been unable to detect any audible effects from the core when an undulatory current is used. Indeed in the above experiments the sounds become inaudible when the finger was merely laid upon the armature S.
  2. Parlor-organ sender and
             reed receiver

  3. [PrevPage] [Next] [INDEX ]  Volume 1   19 Feb. 1876    Page 15  [Source] [ NOTES ]