Sentence Examples


  • Marconi gave great attention to the improvement of devices for the detection of electric waves..
  • The object which Marconi had in view was not merely the detection of electric waves, but their utilization in practical wireless telegraphy.
  • Marconi, Brit.
  • Marconi, however, made the important discovery that if his sensitive tube or coherer had one terminal attached to a metal plate lying on the earth, or buried in it, and the other to an insulated plate elevated at a height above the ground, it could detect the presence of very feeble electric waves of a certain kind originating at a great distance.
  • At the receiving station Marconi connected a single voltaic cell B 1 and a sensitive telegraphic relay R in series with his tube of metallic filings C, and interposed certain little coils called choking coils.