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Water burns!
Mike, G0ULI wrote:
"Looking at my energy bills, it just dissipates." Mike was responding to Cecil`s question: "Does energy per unit time propagate?" Of course it does. Energy at point A flows to point B where it does work. The rate at which energy flows is power. My ultimate authority for radio and electronics is Terman, and his 4th edition of "Radio and Electronic Engineering" published in 1955. It is my technical bible. On page 904 Terman discusses the Sommerfeld analysis of ground-wave propagation. Terman says: "The field strength at unit distance in Eq. (22-1) depends on power radiated by the transmitting antenna, and the directivity of the antenna in the vertical and horizontal planes." The IEEE dictionary won`t dispute Terman. If it does, it needs correction. Best regards, Richard Harrison, KB5WZI |
Water burns!
On Jun 29, 10:24 am, (Richard Harrison)
wrote: The IEEE dictionary won`t dispute Terman. If it does, it needs correction. The IEEE and Terman are both reputable sources and it seems unlikely that they would have substantive disagreements. But it is always possible, for those with the desire, to manufacture dispute by the careful selection of sentence fragments. The defense is to be very cautious about trusting the veracity of quotes from sources with questionable reputations and motives. ....Keith |
Water burns!
On 29 Jun, 07:55, Keith Dysart wrote:
On Jun 29, 10:24 am, (Richard Harrison) wrote: The IEEE dictionary won`t dispute Terman. If it does, it needs correction. The IEEE and Terman are both reputable sources and it seems unlikely that they would have substantive disagreements. But it is always possible, for those with the desire, to manufacture dispute by the careful selection of sentence fragments. The defense is to be very cautious about trusting the veracity of quotes from sources with questionable reputations and motives. ...Keith A man after my own heart! This is where the difference in "learning" and "undestanding" comes to the fore Art Unwin KB9MZ....XG |
Water burns!
Keith Dysart wrote:
... The defense is to be very cautious about trusting the veracity of quotes from sources with questionable reputations and motives. ...Keith I don't believe Terman would have minded being "questioned" at all. I think he did the best which could have been done for his time, and given what was available then. I believe he would have loved to set any errors in accepted principals correct--I don't believe he ever stopped looking. He just couldn't do everything, as especially not all at once! However, the shallow minded who follow in his shadow, who set up a religion around his work. Who canonize his book, who memorize equations and formulas which only apply to narrow applications of very specific physical arrangements ... they can do little better than defend what he left, they certainly are unable to add to it, and probably lack the where-will-all to even question it logically! JS |
Water burns!
Richard Harrison wrote:
John Smith just called me shallow minded. ... Best regards, Richard Harrison, KB5WZI Richard: I did NO such thing, if you need an enemy, pick another, I make a better co-explorer ... If I were to set about a list of "Old Dogs Who Can't Learn New Tricks", you'd be way down on it ... I have no idea what you do in your spare time; I will give you the benefit of the doubt and believe you examine the new closely--and certainly do so before throwing out the old! Regards, JS |
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