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Art wrote:
"If I had a lab it would be easy to prove whether the distributed capacitance and distributed inductance are themselves in parallel within the radiating member instead of in series such that the energy retention qualies are kept." J.C. Maxwell, also an Englishman, had no lab. Radiation is the function of a radio antenna. Kept energy is not so important. Recall that Maxwell`s great speculation was that displacement currents generated a magnetic field the same as conductive currents. Later, this was proved beyond doubt. It is a radiation requirement as no conductors inhabit empty space. My edition of the "ARRL Antenna Book" is the 20th, which means its contents have been refined and tested over many years. It says on page 2-6: "Now we just compared the antenna to a series-tuned circuit. Near its half-wave resonant frequency, a center-fed lambda/2 dipole exhibits much the same characteristics as a series-resonant circuit." J.C. Maxwell died in 1879 at an age of 48 years, 8 years before Heinrich Hertz generated the first man-made intentional electromagnetic waves. These proved Maxwell correct. Oliver Heaviside, a Scot, born in 1850, decided to teach himself the contents of Maxwell`s "Electromagnetic Theory" and in 1887 started "dumbing down" Maxwell in a series of articles published in an English magazine, "The Electrician". That was the beginning of modern communication engineering. Oliver Heaviside once said, "Let mathematics be humanized if possible. The best of proofs is to set out a fact descriptively so that it can be seen to be a fact." Heaviside proves that all who are born in Edinburgh or London are not fools. Best regards, Richard Harrison, KB5WZI |
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