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Standing morphing to travelling waves, and other stupid notions
art wrote:
To understand that alone in the face of thousand postings is a very difficult task indeed.Even more so for a mechanical engineer When I drive across a long bridge, I am trusting that most mechanical engineers don't have a problem with vectors. :-) -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
Cecil Moore wrote:
... When I drive across a long bridge, I am trusting that most mechanical engineers don't have a problem with vectors. :-) Yeah, used to be that way in California--last earthquake destroyed that--maybe you heard about it? :-D Regards, JS |
Standing morphing to travelling waves, and other stupid notions
Jim Kelley wrote:
Sure, assuming energy is being "used" to perform an operation in which no work is done. You'll need to prove the first part of the sentence in order to show the second part to be true. Your ignorance is showing, Jim. It takes absolutely no work to transform impedances because those impedances are virtual and meet the IEEE Dictionary definition (B) for "impedance" which requires zero work. It might be better to say the reflected energy is performing a "function" which requires no work (possibly a lot like being a physics professor). :-) -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
Cecil Moore wrote:
art wrote: To understand that alone in the face of thousand postings is a very difficult task indeed.Even more so for a mechanical engineer When I drive across a long bridge, I am trusting that most mechanical engineers don't have a problem with vectors. :-) Amazing! I'm watching the time stamp on these missiles... erm.. missives, and you guys are almost in chat mode! Respectfully, y'all ought to step back an catch yer collective breaths! ;^) - 73 de Mike N3LI - |
Standing morphing to travelling waves, and other stupid notions
On 18 Jan, 12:33, Cecil Moore wrote:
art wrote: To understand that alone in the face of thousand postings is a very difficult task indeed.Even more so for a mechanical engineer When I drive across a long bridge, I am trusting that most mechanical engineers don't have a problem with vectors. :-) -- 73, Cecil *http://www.w5dxp.com No Cedcil I don't have a problem with vectors but apparently those that follow the sciences of electricity do. From time memorial electrical engineers have used iron filings to determine the field lines of an inductor. Yet at the same time we do NOT use a ferrous material for antennas.Thus when using E and H in radiation calculations one must determine the the phases of both that are applicable to the material used. Where the books of old place the EH vector at the pont of radiation as 90 degrees to each other this can only be seen as representitive of a ferrous field, where as, a diamagnetic field vector is exactly the phase of the electric field vector, putting aside for the moment the "curl" vector. When considering a radiative circuit one must fully understand that the current creating the field is the instant expiration of a capacitor. When a inductance accepts such energy to generate its field one must determine the material used to ascertain the true shape of the field. It is no coincidence that a diamagnetic field is noted for its levitation properties that a ferrous material cannot supply.So instead of accepting formulae where a magnetic field is assumed to be consistant the same for all materials for all materials one must understand that this assumption is not correct even tho it has consumed the sciences of today which has forced the generation of the new sciences of the day. It is time the books were redwritten to reflect the true workings of nature around which Newtons laws still stands. My two penny worth from a mechanical engineer. Best regards as always Art Unwin KB9MZ....XG( uk) |
Standing morphing to travelling waves, and other stupid notions
Michael Coslo wrote:
Amazing! I'm watching the time stamp on these missiles... erm.. missives, and you guys are almost in chat mode! What is even more amazing is that someone in CA can reply to my TX posting before I posted it. :-) Reminds me of a tale. A guy in Abilene, TX was taking a bus to Hobbs, NM. It left at 12:00 and got there at 12:10. When asked if he wanted a ticket, the guy replied, "No, but if you don't mind, I'd like to watch that sucker dig out when it leaves." -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
"Michael Coslo" wrote in message ... Cecil Moore wrote: art wrote: To understand that alone in the face of thousand postings is a very difficult task indeed.Even more so for a mechanical engineer When I drive across a long bridge, I am trusting that most mechanical engineers don't have a problem with vectors. :-) Amazing! I'm watching the time stamp on these missiles... erm.. missives, and you guys are almost in chat mode! Respectfully, y'all ought to step back an catch yer collective breaths! ;^) - 73 de Mike N3LI - Thats what would be fun! a #rraa irc chat channel! just think of the real time discussions that could go on there!! |
Standing morphing to travelling waves, and other stupid notions
Gene Fuller wrote:
This is truly sad. I thought you had finally begun to understand this stuff, but you have regressed back into the same old nonsense. You are still totally confusing phasors with field vectors. They are utterly, totally, and absolutely unrelated. Gene, in order to alleviate your ignorance on this subject, I have come up with a lectu http://au.youtube.com/watch?v=0PI82Z...97E5D&index=37 It is titled: "Lecture-38-Phasor Form of Poynting Theorem" - enjoy! -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
Cecil Moore wrote:
http://au.youtube.com/watch?v=0PI82Z...97E5D&index=37 It is titled: "Lecture-38-Phasor Form of Poynting Theorem" - enjoy! Wow! I never thought I would ever see this information outside of a university lecture. There are a number of these lectures available. Anyone who is serious about this subject line should avail themselves of the considerable technical knowledge contained in these lectures. -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
Art, KB9MZ.......XG wrote:
"ARRL states that an antenna is a simple parallel circuit but this concentration on antenna workings is blind siding --------." Stop right there. The type of resonant circuit depends upon length and construction of the antenna. My 20th edition of The ARRL Antenna Book says on page 2-6: "Near its half-wave resonant frequency, a center-fed lamba/2 dipole exhibits much the same characteristics as a coventonal series-resonant circuit." Best regards, Richard Harrison, KB5WZI |
Standing morphing to travelling waves, and other stupid notions
Cecil Moore wrote: Jim Kelley wrote: Sure, assuming energy is being "used" to perform an operation in which no work is done. You'll need to prove the first part of the sentence in order to show the second part to be true. Your ignorance is showing, Jim. It takes absolutely no work to transform impedances because those impedances are virtual and meet the IEEE Dictionary definition (B) for "impedance" which requires zero work. :-) No work means no power, and no ________. See if you can fill in the blank. ac6xg |
Standing morphing to travelling waves, and other stupid notions
Cecil Moore wrote:
Cecil Moore wrote: http://au.youtube.com/watch?v=0PI82Z...97E5D&index=37 It is titled: "Lecture-38-Phasor Form of Poynting Theorem" - enjoy! Wow! I never thought I would ever see this information outside of a university lecture. There are a number of these lectures available. Anyone who is serious about this subject line should avail themselves of the considerable technical knowledge contained in these lectures. Cecil: Excellent! find ... Thanks, JS |
Standing morphing to travelling waves, and other stupid notions
Michael Coslo wrote:
... Amazing! I'm watching the time stamp on these missiles... erm.. missives, and you guys are almost in chat mode! Respectfully, y'all ought to step back an catch yer collective breaths! ;^) - 73 de Mike N3LI - Yeah, I just bet. But we are seeing the "mirror image" of that. It amazes us that someone is so stupid as to use a usenet host which is slower than the postal system! JS |
Standing morphing to travelling waves, and other stupid notions
art wrote:
... Art Unwin KB9MZ....XG( uk) Sounds to me there is a "crack under the door" and the light coming through is suggesting ether has NOT the properties of iron ... Regards, JS |
Standing morphing to travelling waves, and other stupid notions
Jim Kelley wrote:
:-) No work means no power, ... You are right, of course. I've been retired for a decade now and forgot what work was. :-) Work can have the dimensions of joules. Reflected power is in joules/sec. The joules in the reflected wave is equal to the reflected power times the length of the transmission line in seconds. -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
Art wrote:
"When an inductance accepts such energy to generate its field one must determine the material used to ascertain the true shape of the field." Bunk! Broadcast arrays have the same pattern using either painted steel towers or galvanized steel towers. Best regards, Richard Harrison, KB5WZI |
Standing morphing to travelling waves, and other stupid notions
John Smith wrote:
Yeah, I just bet. But we are seeing the "mirror image" of that. It amazes us that someone is so stupid as to use a usenet host which is slower than the postal system! Tis an amazing universe John, and so many amazing people in it...... - 73 de Mike N3LI - |
Standing morphing to travelling waves, and other stupid notions
On 19 Jan, 07:14, (Richard Harrison) wrote:
Art wrote: "When an inductance accepts such energy to generate its field one must determine the material used to ascertain the true shape of the field." Bunk! Broadcast arrays have the same pattern using either painted steel towers or galvanized steel towers. Best regards, Richard Harrison, KB5WZI So you reject the magnetic field shape of a diamagnetic material being deifferent from its steel counterpart? |
Standing morphing to travelling waves, and other stupid notions
art wrote:
... So you reject the magnetic field shape of a diamagnetic material being deifferent from its steel counterpart? I have heavy military 12 ft. SS whips, a magnet will stick to them ... Regards, JS |
Standing morphing to travelling waves, and other stupid notions
On 21 Jan, 14:55, John Smith wrote:
art wrote: ... So you reject the magnetic field shape of a diamagnetic material being deifferent from its steel counterpart? I have heavy military 12 ft. SS whips, a magnet will stick to them ... Regards, JS Then it is not fully efficient as a diamagnetic material. You will note that the SS retains energy in its magnetic condition via a hysteresis curve. Art |
Standing morphing to travelling waves, and other stupid notions
art wrote:
... Then it is not fully efficient as a diamagnetic material. You will note that the SS retains energy in its magnetic condition via a hysteresis curve. Art This all got me wondering ... Just walked out to garage, with a neodymium magnet, where I have some 8+ ft whips stuck up overhead. Only one of them had NO attraction to the magnet at all. I believe it is an old antenna specialists ChickenBand whip! Apparently, back in the 70's the SS in the whips was better. However, I think the military ones contain the iron for strength, they are tough. Regards, JS |
Standing morphing to travelling waves, and other stupid notions
On 21 Jan, 15:10, art wrote:
On 21 Jan, 14:55, John Smith wrote: art wrote: ... So you reject the magnetic field shape of a diamagnetic material being deifferent from its steel counterpart? I have heavy military 12 ft. SS whips, a magnet will stick to them ... Regards, JS Then it is not fully efficient as a diamagnetic material. You will note that the SS retains energy in its magnetic condition via a hysteresis curve. Art Let me qualify my remarks a bit more. Diamagnetic materials produce an oxide on its surface which controls the magnetic field but without retention of energy. Stainless steel has chromium and nickel as part of its contents which also produce an oxide on its surfaces. I would imagine that the configuration of the magnetic field would be somewhat different and the iron content would also retain magnetic energy instead of using it for radiation. Art |
Standing morphing to travelling waves, and other stupid notions
Art wrote:
"So you reject the magnetic field shape of a diamagnetic material as being different from its steel counterpart?" Yes. A galvanized tower might just as well be solid zinc due to skin effect. No one makes any allowance for zinc, steel, copper, or gold except for resistivity. For that, the adjustment is small indeed. Further, Maxwell`s equations are ample for all electrical radiation predictions even though these were made before radio waves had been discovered. No addenda are needed. Best regards, Richard Harrison, KB5WZI |
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