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On Sat, 25 Jun 2005 09:02:04 -0500, Cecil Moore
wrote: One conceptual mistake that a lot of people make concerns the roll of free electrons in a transmission line. Concepts indeed. Rolling free electrons. How did Planck miss this one? I can visualize marbles cascading down a quantum stairwell though. ;-) |
On Sat, 25 Jun 2005 10:10:51 GMT, ml wrote:
regarding your being so firm saying that rf is typically just conventional physics, I dunno.. who says it's confirmed to our space?? Hi Myles, He showed it to a precision of 34 places. Do you need more? we are only just begining to see the possibilities that things in our deminsion/ or time "e space" do in fact have relationships with 'other ' things, some of which might be having effects out of phase, 'time' or having somthing corresponding in another dimension so to speak (for example) If by we, you mean astronomers, and if by things, you mean galaxies. This is where 34 places begins to add up to serious values, like a boost of 1 MPH acceleration averaged over 100 quadrillion stars. Hold the key down on your amplified transmitter for a century, and your antenna might create as much thrust pressure that a snail expends in a femtosecond. If quantum effects were significant, then the weight of one more microbe from a nearby sneeze would immediately crush you as much as the added burden of Atlas. it's not unfathomable to think that the sum of our current knowledge might no be infinate, perhaps we've simply failed to measure ? who knows what tomorrows proved new theories will bring? Who knew that Flying machines would move millions of people? Certainly not Plato, but knowing it then wouldn't upgrade his seat to first class now. already here waves(rf) conventional were compared to photonic 'energy'(now thats something few can understand alone) and those photos do some really strange things w/regards to the above (even more strange) Strange? Only the way Cecil describes it. You may have as well studied drug abstinence from Elvis. 73's Richard Clark, KB7QHC |
Richard Clark wrote:
On Sat, 25 Jun 2005 09:02:04 -0500, Cecil Moore wrote: One conceptual mistake that a lot of people make concerns the roll of free electrons in a transmission line. Concepts indeed. Rolling free electrons. How did Planck miss this one? I can visualize marbles cascading down a quantum stairwell though. ;-) Once again, the Netscape spellchecker fails to catch the typo. I have an inherited palsy as did my father and as does my sister. My sister has had electrodes implanted in her brain to try to control it but she, like I, still has a lot of trouble typing. It takes me five times as long to compose an acceptable posting as the average person because of all the double and triple entries. I sincerely appologize that my physical handicap has exposed your psychological tendency to make fun of the misfortunes of others. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
On Sat, 25 Jun 2005 14:21:19 -0500, Cecil Moore
wrote: I sincerely appologize that my physical handicap has exposed your psychological tendency to make fun of the misfortunes of others. No, yours is not an appology - as you well know. Your hand at irony is firmly intact as all may notice in this cheap play with the sympathy card. |
Richard Clark wrote:
On Sat, 25 Jun 2005 14:21:19 -0500, Cecil Moore wrote: I sincerely appologize that my physical handicap has exposed your psychological tendency to make fun of the misfortunes of others. No, yours is not an appology - as you well know. Your hand at irony is firmly intact as all may notice in this cheap play with the sympathy card. Care to see a picture of my sister's shaved head after surgery? -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Look at the title of this thread. Why slosh?
Transmission lines are used to convey energy, and at high frequencies they serve as resonant circuits, measuring devices, and impedance matching sections. Viltage and current at any point on a transmission line is expressed as the sum of the voltages and currents of two waves, one traveking forward toward the load (the incident wave) and one reflected from the load (the reflected or reverse wave). The reflected wave consists of energy from the wave traveling toward the load which is rejected by the load becausse the voltage to current ratio does not fit the only voltage to current ratio the load can accept, its impedance, perhaps a complex value. All energy in the wave traveling toward the load and all energy traveling away from the load (the opposite travel direction) must conform to the absolute value of the line`s characteristic impedance (Zo). Phase of the reflected current traveling back toward the generator is given a negative sign because the reflected wave is traveling in the reverse direction from the forward wave which travels toward the load. (See page 86 in the 1955 edition of Terman. Phase of the reflected current traveling toward the generator is everywhere proportional but out of phase with reflected voltage. The reflected voltage to current ratio is: -Zo. Actual voltage across the load is the sum of the incident and reflected voltages. Actual current through the load is the sum of the incident and reflected currents. The vector ratio of load voltage to load current must equal the load impedance which may be a complex value. The vector ratio of incident voltage to treflected voltage at the load is called the reflection coefficient of the load. It may be obtained from forward and reverse powers at the load. I have a special slide rule given me by the Bird wattmeter people to convert wattmeter forward and reverse indications into a reflection coefficient or an SWR. The transmission line and its load completely control the volts and amps everywhere in the system driven by a certain generator. There are no renegade volts and amps sloshing around. The idea is preposterous. Best regards, Richard Harrison, KB5WZI |
Richard Harrison wrote:
There are no renegade volts and amps sloshing around. The idea is preposterous. Thanks for all your statements of the laws of physics embodied in the wave reflection model. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
Richard Clark wrote:
No, yours is not an appology - as you well know. Your hand at irony is firmly intact as all may notice in this cheap play with the sympathy card. The devil made me do it, Richard. I just couldn't resist a cheap shot at the resident cheap shot artist. :-) -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
Bob, W9DMK wrote:
"The above paragraph was, however, a rather difficult diiffocult to understand ending---." Fair enough. Ohm`s law prevails at a-c as it does at d-c. That is, I = E / Z, just as I = E / R. If Z is a load impedance, it dictates the current it accepts. An impedance in series with the load affects the voltage applied to the load, but whatever voltage to the load is, the current through the load is related to the voltage adross the load by Ohm`s law. When a transmission line feeds a load, Ohm`s law prevails at the load Feed a certain current through and it produces a certain voltage drop. Feed a certain voltage and it allows a certain current. This is repetitious, but it`s true. The line only functions at Zo. The load only functions at its load impedance. The adjustment between these two intransigents are the forward and reverse voltages and currents whose sums make up the actual voltage and current at the load. Best regards, Richard Harrison, KB5WZI |
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