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Richard,
OK, I will turn this right back at you. How do you know that the countless Faraday screens remove the E-field component from electromagnetic waves? "Saying it does not make it so." Yes, I understand they are used in broadcast transmission lines, and yes, I understand they take many lightning hits. Faraday screens are effective. How do you know that they also negate the fundamental properties of time-varying electric and magnetic fields as expressed by Maxwell's equations? 73, Gene W4SZ Richard Harrison wrote: Gene, W4SZ write: "As has been said many times on this newsgroup, it is not possible to filter out one field component or the other." Saying it does not make it so. Countless Faraday screens are at work removing the E-field component from electromagnetic waves. Faraday said that the voltage in a coupled circuit depends only on the rate of change of the magnetic flux through the circuit. He was refering to induced voltage. It was 1831 when Michael Faraday observed the interaction between primary and secondary coils in what was likely the world`s first transformer. Faraday made it himself and noted that the needle of a galvanometer connected across one coil deflected briefly whenever he connected or disconnected a battery across the other coil. |
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