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#461
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Rotational speed
Keith Dysart wrote:
On Apr 28, 8:54 am, Cecil Moore wrote: A) E(x,t) = Eot[sin(kx+wt) + sin(kx-wt)] B) E(x,t) = 2*Eot*sin(kx)*cos(wt) In the same sense that B) (called by you the standing wave expression) is artificial, they are all equally artificial. A) is easy to understand. The amplitude is where it needs to be and the phase is where it needs to be to be properly comprehended. B) is what has everyone confused. The phase information readily apparent in A) is embedded in the amplitude in equation B). For a lot of people, comprehension has disappeared. -- 73, Cecil http://www.w5dxp.com |
#462
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Rotational speed
On Apr 28, 11:01 am, Cecil Moore wrote:
It seems to be the key in determining what phase shift occurs through a 75m loading coil. Cecil, don't even THINK of dragging that stinky old thing out again. You're reminding me how incredibly rude you were to me one of the previous times you beat your head against loading coils. What happens with them is crystal clear to me and not in need of any further discussion. :-( Tom |
#463
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Rotational speed
K7ITM wrote:
Cecil, don't even THINK of dragging that stinky old thing out again. You're reminding me how incredibly rude you were to me one of the previous times you beat your head against loading coils. What happens with them is crystal clear to me and not in need of any further discussion. I remember being rude to another Tom, but I don't remember being rude to you. I don't even remember your position. Would you mind summarizing your crystal clear position on how many degrees a 75m bugcatcher coil occupies in a resonant mobile antenna? -- 73, Cecil http://www.w5dxp.com |
#464
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Rotational speed
K7ITM wrote:
On Apr 28, 11:01 am, Cecil Moore wrote: It seems to be the key in determining what phase shift occurs through a 75m loading coil. Cecil, don't even THINK of dragging that stinky old thing out again. You're reminding me how incredibly rude you were to me one of the previous times you beat your head against loading coils. What happens with them is crystal clear to me and not in need of any further discussion. :-( Tom Cecil is trolling for an argument again. Ignore him. 73, Tom Donaly, KA6RUH |
#465
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Rotational speed
Tom Donaly wrote:
Cecil is trolling for an argument again. Ignore him. Actually, I am trolling to reopen a technical discussion that was not resolved in the past. What is your aversion to a technical discussion? -- 73, Cecil http://www.w5dxp.com |
#466
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Rotational speed
Cecil Moore wrote:
Tom Donaly wrote: Cecil is trolling for an argument again. Ignore him. Actually, I am trolling to reopen a technical discussion that was not resolved in the past. What is your aversion to a technical discussion? Nice try, Cecil. 73, Tom Donaly, KA6RUH |
#467
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Rotational speed
K7ITM wrote:
. . . I'm very curious now to see exactly what Pearson & Maler and Van Valkenburg say in their texts. Are they clear with a mathematical definition, or do they end up just using words that can be interpreted in different ways? . . . Sorry, I've been swamped, but will post some quotes soon. Roy Lewallen, W7EL |
#468
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Rotational speed
On Apr 28, 8:40 pm, Cecil Moore wrote:
K7ITM wrote: Cecil, don't even THINK of dragging that stinky old thing out again. You're reminding me how incredibly rude you were to me one of the previous times you beat your head against loading coils. What happens with them is crystal clear to me and not in need of any further discussion. I remember being rude to another Tom, but I don't remember being rude to you. I don't even remember your position. Would you mind summarizing your crystal clear position on how many degrees a 75m bugcatcher coil occupies in a resonant mobile antenna? -- 73, Cecil http://www.w5dxp.com Yes, I would mind. It's in the archives of the newsgroup if you care to look. Tom |
#469
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Rotational speed
K7ITM wrote:
Yes, I would mind. It's in the archives of the newsgroup if you care to look. Millions of postings are in the archives. Would you please give a subject line and date? If it was in 2003, everyone was wrong back then. -- 73, Cecil http://www.w5dxp.com |
#470
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Rotational speed
On Apr 29, 2:18 pm, Roy Lewallen wrote:
K7ITM wrote: . . . I'm very curious now to see exactly what Pearson & Maler and Van Valkenburg say in their texts. Are they clear with a mathematical definition, or do they end up just using words that can be interpreted in different ways? . . . Sorry, I've been swamped, but will post some quotes soon. Roy Lewallen, W7EL More from my research (which is probably at an end at this point): Bell, "Fundamentals of Electric Circuits," calls a phasor a rotating vector, period. IEEE Standard Dictionary of Electrical and Electronic Terms has entries for both non-rotating and rotating definintions. Christiansen, "Electronic Engineers' Handbook," defines a phasor clearly as a non-rotating quantity. This has been educational. Clearly there are people in both camps. I'm obviously in the non-rotating camp, and it seems to be one with a high population. I'll be careful to ask when someone writes of phasors and their definition is not clear from the context, at least if the distinction between the two definitions matters in that case. Cheers, Tom |
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