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#1
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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 |
#2
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On 21 Nov, 12:31, (Richard Harrison) wrote:
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. Yes it does. But it is only half of the story since it basically is missing half of the circuit which the spark was looking for . As you know a requirement is to keep the LC ratio, so basically he had a tesla coil which is the opposite and was looking for the capacitor When you have both of these THEN you have the "circulating" current which creats full radiation.This circulating current is ofcourse in the form of pulses at twice per period where the spark is one of them that is uncontrolled with respect to the frequency of the circuit It is indicative of the time constant involved which is also a requirement of radiation Close but no cigar. A Hertz antenna is said to have its resonant frequency determined by its distributed capacitance which varies according to its physical length. I would argue with that based on the LC ratio for present day radiators but for Hertz it would be correct since his radiator did not have the inductive storage of energy which was dissipated in a spark and not returned to the capacitor. .. Best regards, Richard Harrison, KB5WZI Best regards Art Unwin ...KB9MZ...xg (uk) |
#3
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On Wed, 21 Nov 2007 14:17:42 -0800 (PST), art
wrote: Yes it does. But it is only half of the story since it basically is missing half of the circuit which the spark was looking for . As you know a requirement is to keep the LC ratio, so basically he had a tesla coil which is the opposite and was looking for the capacitor Hi Arthur, You really should read some history before re-writing it. Hertz' antenna was a single turn of wire (as was the receiver's). If you cannot figure out how Hertz' antenna resonance was achieved (let me drop the shoe here, and say "in the conventional way"), then you are more than 120 years behind in the game. It really has all been done before. Books have been written about it, several movies too, and perhaps a segment on the Discovery Channel. 73's Richard Clark, KB7QHC |
#4
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On 21 Nov, 19:26, Richard Clark wrote:
On Wed, 21 Nov 2007 14:17:42 -0800 (PST), art wrote: Yes it does. But it is only half of the story since it basically is missing half of the circuit which the spark was looking for . As you know a requirement is to keep the LC ratio, so basically he had a tesla coil which is the opposite and was looking for the capacitor Hi Arthur, You really should read some history before re-writing it. Hertz' antenna was a single turn of wire (as was the receiver's). If you cannot figure out how Hertz' antenna resonance was achieved (let me drop the shoe here, and say "in the conventional way"), then you are more than 120 years behind in the game. It really has all been done before. Books have been written about it, several movies too, and perhaps a segment on the Discovery Channel. 73's Richard Clark, KB7QHC For more than a year you have stated "it" has been done before and none of us know what "it" is. Thus your posts have no meaning to anybody and is why they are seen as not worth while persueing. You are so cryptic that you fool yourself as well as wasting other peoples time. is |
#5
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On Wed, 21 Nov 2007 19:57:57 -0800 (PST), art
wrote: For more than a year you have stated "it" has been done before and none of us know what "it" is. US? You got a mouse in your pocket? Is his name Mickey Gauss? 73's Richard Clark, KB7QHC |
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