Revisiting the laboratory of Heinrich Hertz in 1888

#dipole #antenna; #sparks; #electromagnetic #measurements; #radiation; #equivalent #circuits; #history.
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Abstract—Some new perspectives are presented on the seminal experiment Hertz carried out in 1888 to establish the validity of Maxwell’s theory by showing that the velocity of man-made electromagnetic waves was the same as that of light. Both measured and theoretical results are given that were obtained using modern tools of measurement and analysis. Time-dependent waveforms are shown that were obtained using a digital oscilloscope to measure both the input voltage pulse provided by a small induction coil and the radiated field produced by replicas of the antennas Hertz employed. The standing waves Hertz observed using micrometer-driven spark gaps at the terminals of his receiving loops are shown to correlate well with the RMS value of the entire transient field produced by a single discharge. Results obtained from the use of both circuit theory and modern antenna software are shown to be in substantial agreement with measurements except where noted. Deficiencies imposed by the laboratory where Hertz worked are discussed.

 

Keywords—dipole antenna; sparks; electromagnetic measurements; electromagnetic radiation; equivalent circuits; history.

 


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  • University of South Carolina
  • Columbia, South Carolina
  • United States
  • Building: Swearingen
  • Room Number: 1A05
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  • Starts 23 May 2018 06:07 AM UTC
  • Ends 04 June 2018 03:07 PM UTC
  • No Admission Charge

  Speakers

Ted Simpson of University of South Carolina

Topic:

Revisiting the laboratory of Heinrich Hertz in 1888

 

 

Address:Columbia, South Carolina, United States

David Metts of University of South Carolina

Topic:

Revisiting the laboratory of Heinrich Hertz in 1888

Address:Columbia, South Carolina, United States