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Jeff:
I am top posting here, just because your post is so damn long, and I could NOT bring myself to cut any of it ... Thanks for being candid with us. Yep, you are one of us alright. Yep, we have to use others past books, thoughts, knowledge, computer apps, papers, etc. ... it is just too much, it is inundating ... I mean, my home office here looks like yours! And, the wife is a "neat-freak" ... I tell you, I spend all my time looking for materials she has "organized" for me ... smirk I hope you didn't come here for answers, I mean I can't speak for everyone here, but all I have is questions! And, if I ask something that doesn't have a black and white answer, I get slapped in the face! blank-look Demands for answers, demands for open discussions, demands we look at even the quantum world in "explorations into antennas", especially from some of the STRONG personalities you find here, can be intimidating ... but, welcome aboard. However, if you thought you would find peace of mind, bliss and enlightenment here ... think again. ROFLOL You are just about to find out "how deep this Rabbit-Hole goes!" Warm regards, JS Jeff Liebermann wrote: On Tue, 16 Sep 2008 21:18:45 -0700 (PDT), Art Unwin wrote: Consider the following as rhetorical questions. I don't expect you to answer. My purpose is to demonstrate what you have left out of your rants. Sorry about that. Don't you think it is odd that all computer programs based on Maxwells laws reflect every thing I have stated? Name one or more of these computer programs based on Maxwell's Equations (not laws). How I could make all this up and several computer programs made by different people both sides of the pond can reproduce without conivance a computer program that provides the details of every thing that I have stated? Who are these people and what programs are they using? What results did they obtain? Which NEC models were they using (NEC2, NEC4, etc)? None of this is in the antenna books or relavent books on science and do you know why? Which antenna books are lacking? I have about 5 linear feet of printed antenna books, several boxes of IEEE Antenna and Propagation SIG proceedings, and much of my hard disk stuffed with free and commercial modeling and design software. Which antenna books are you suggesting are lacking and why? My generation has been taken over by computers where prior generations resorted to origanal thought from first principles. Nice topic switch. I'm 60.8 years old and am also in the computer business. http://802.11junk.com/jeffl/pics/office/ I've never had an original thought in my life. I base everything I do on what myself and others have done before. Short of divine revelations, I suspect that much of the scientific and engineering world works the same way. Everything is based somewhat on past experience and history. They accept that the computer will spill out a lot of inaplicable information but feel the sorting problem is so much easier for the lazy. I can see you've never actually used a computah to solve problems. I have. Computers are difficult to deal with for solving an individual problem. They are truly wonderful for solving repetitive and interactive problems. Simulations and emulations are fantastic for uncovering bugs and problems before they become too difficult or too expensive to fix. There are many companies that go directly from a computah model to manufacturing without a prototype because they are confident their computah models will work. If saving huge amounts of time and effort constitutes being lazy, you have a warped perspective of what computahs can do for you. Problem is that books on the sciences have not had critical analysis by the following generation which always call for revisions. Nice topic switch again. Books tend to be several years behind. Which technical antenna books are you suggesting have failed to obtain a peer review? I played tech editor on one Unix book (never again!) and have a fair idea of the process. There are many books published under various vanity press labels which are solely the responsibility of the author. Some of those, I will agree have not been extensively peer reviewed. I know of several in the ham radio market that have not been properly reviewed, but which are generally accurate. Which antenna books do you find inadequate due to lack of a "critical analysis"? The books used for supplying questions to the computer are those taken from the books that never received the normal generational revisions. My computer does not accept questions. We're not there yet. I have to frame the problem in a language that the computer can understand. The questions are implied in the framing of the problem. There are books which only survive the first printing. Those will never survive a "normal generational revision" because there will be no 2nd generation. Which antenna books do you find inadequate due to the lack of a 2nd printing? Sorting computer answers requires common sense My computer does the sorting, not me. I do the interpretation of the results produced by the computer. My computer also lacks common sense. We're not there yet. It's also possible that I lack common sense, but I won't admit to that. but with the absence of required revisions what one calls common sense is one that needs revision ala garbage in garbage out. Who or what organization requires a revision? Where does common sense come into the design of an antenna? What equations govern the application of common sense in an antenna design? What are the units of measure of common sense? Now we get statements that if more gain came from tipping antennas the world would have tipped the towers years ago. That's not common sense. It's designing within the limitations of the technology and within conventional construction practices. If you've ever had to deal with populating a tower full of assorted antennas and trying to optimize the arrangement for maximum revenue (more antennas), versus minimum interaction and intermod, you'll understand what practical limitations are all about. Anyone can design an antenna that works in free space. It takes some skill and experience to design it to meet regulatory and practical limitations. To me that is totally absent of common sence but for people who rely on unrevised books it is perfectly understandable. Most authors include an email address to which you can send corrections and objections. Some of mine have appeared in the errata pages for at least one book. What antenna book is in need of revision because it discusses tilting antennas? If people have discarded Universal laws then the computers will not reflect same based on input. What universal law? I don't recall seeing a Universal Law in my computer or software. We have to many academics churning out physics papers which reflects direction of past papers as a way of getting them accepted and published and a path to a higher station. Well, yes... that's the way it works. You learn from the past and you build on it. Most of those papers consist of a summary of existing technology and understanding. They then add their own research. You can see that on everything from traffic laws to patents. Have you ever even read a single issue of IEEE Antennas and Propagation SIG proceedings? What we need is design by first principles which other countries still have by not yet smitten by computers and who are capable of original thought. No need to go looking outside the industrialized world. I sometimes help at the local skool on senior projects. The students are required to build something to graduate. I have a difficult time keeping the ideas down to something that can be built in a few weeks of class. However, the imagination and creativity of some of these students is well beyond what I would expect to see from a seasoned professional. If you want originality, get it before it's squashed by the responsibilities and realities of life. Universities in the industrial world state the books that must be followedand the student realizes that the answer in the books are the datum used by professors so.......... Really? Skool textbooks are rotated almost constantly. That's allegedly to keep up to date, but really to squash the used book market. I spent much of college career arguing with the professors, much of which was over reality versus what's in the books. When the instructors have a political agenda added to the mix, things get really interesting. Incidentally, one has to understand the books, before one can argue against them. follow the same path formed by those that proceded you as the primary for getting a job is that piece of paper without original thought. There are those that are capable of original thinking and those that simply become cogs in the system. I don't have time to expound on the relative merits of each. If you want to see a small riot, get all the independent thinkers together. They can never agree on anything. Are you sure you want everyone to be an original thinker? I shudder at what methinks will happen to something like the traffic laws. There are many of past generations that have generalized about point radiation alas this generations belittles it and successfully resist change. Nice topic switch again. How many and which generations generalized about point radiation? How have these generations "belittled" point radiation? Do you know that it's actually called zero-point energy? What does zero-point energy have to do with antennas? How are you going to deal with the infinite energy density required to obtain zero-point energy? http://en.wikipedia.org/wiki/Zero-point_energy Sad Sad Sad Art Unwin KB9MZ........xg Ah... The servers are finally done backing up and updating. Thanks for the diversion. |
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