skin depth decay
Richard Clark, KB7QHC wrote:
"Heinrich Hertz might have something to discuss with you about his
experiments."
Anyone should be so honored! Heinrich Rudolph Hertz (1857-1894) was a
pioneer experimental investigator of electromagnetic (EM or radio)
waves, according to B. Whitfield Griffith in "Radio-Electronic
Transmission Fundamentals'. Hertz in 1887, eight years after the death
of J.C. Maxwell (the predictor of EM waves) proved Maxwell correct.
Hertz did so by generating the first man-made EM waves in his
laboratory.
I believe the Hertz antennas consisted of loops which did not depend on
presence of ground for operation. Hertz was able to create a severe
electrical disturbance in one loop and across a gap in the second loop a
spark would jump.
Hertzian radio waves are said to lie between 10 kHz and 30,000 GHz, and
probably include the range of Art`s antenna.
A Hertz antenna is said to have its resonant frequency determined by its
distributed capacitance which varies according to its physical length.
Best regards, Richard Harrison, KB5WZI
|