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Richard:
[snip] Beliefs. -sigh- Is this one of those transcendental statements about navel gazing? [snip] No... it's not transcendental it's purely algebraic! (grin) [snip] Everywhere... Even in the near field of an antenna. No. Not even in the near field of an antenna. [snip] Where then is Zo = 377 Ohms? [snip] That is an antenna itself has no effect on the fundamental u and e of the media in which it is immersed. Wrong. [snip] Surely uo, eo, Zo and c (velocity of light) are fundamental and invariant properties of "free space", no? [snip] After all the antenna is very small, and free space is very large (grin), and so a tiny antenna cannot change u and e everywhere! Abstracting from near space to everywhere is the source of your error. [snip] No, I'm "contracting" from outer space to near space... using the contravarient tensor! [snip] The waves are not plane where the waves are not plane, but... Is this a Zen "but?" [snip] If a tree falls in the forest and no one is there to hear it, does it make a sound? If an antenna radiates somewhere in the Universe and there are no receivers, does it really radiate? [snip] There might just also be plane waves passing through identically the same region of space, say emanating from a more distant antenna. Wrong. [snip] Oh, and here I thought that at least tiny remnants of all radiation eventually passes through every part of space, filling all of space as it expands throughout the Universe.. [snip] The ratio for those plane E and H fields will indeed be 377 Ohms over the exact same region of space where Zo is different because of simultaneous but non-planar waves. Wrong. [snip] I know that Special Relativity [Maxwell's equations] is not supported in full by General Relativity, but surely even though space is warped by mass, superposition must still be supported. The radiation in your neighbourhood is a superposition of suitably delayed and reduced (by path attenuation) of all radiation, no? [snip] So in fact... the wave impedance of free space can have many values simultaneously, one [universal?] constant value of ~377 Ohms for plane waves, while it may have many other [arbitrary] values for waves passing through the same region of space that are not plane. Thoughts, comments? Wrong. [snip] And here I thought I was going to be able to sell you a little corner of the Universe [very near the Brooklyn Bridge] that has any Zo you want. What? [snip] Peter, are you trying to bust loose a seized bearing? Most of this reads like the Molly Bloom citation from a technical translation of "Ulysses." 73's Richard Clark, KB7QHC [snip] Molly Bloom? How did she get into this... I thought she was still living in the house on Eccles Street". What? Now Ulysses, he's my man! I miss Reg Edwards already :-( Regards, -- Pete K1PO Indialantic By-the-Sea, FL |
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