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        The Design Corner / Hobby Corner - Electronic Field Disturbance Monitor
designed by David A. Johnson, P.E.
Updated on:  Wednesday, April 09, 2008 04:51 AM

  Electronic Field Disturbance Monitor:  Introduction - Monitor Design - Monitor Operation
  Circuit Description:    Front-end Circuit Section - Alarm Threshold Detector 
    Power Supply Voltage Regulators
    Battery Voltage Monitor - Monitor Assembly
  Material List                       

Hobby Corner:   Electronic Tips - Hobby Circuits - Electronic Field Disturbance Monitor - 100+ Construction Ideas



About twenty five years ago, an inventor friend of mine showed me some illustrations in a college physics book. The book was one of a three volume collection of physics lectures given by the noble prize winner Richard Feynman. The book illustration was very similar to the figure below. The picture depicted how the earth's natural electric field would be distorted by an electrically conducting object, such as a human body, positioned above the earth's surface.

 

 


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