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![]() Walter Maxwell wrote: The same problem exists with the term "power flow." Engineering textbooks define power as the "quantity of energy passing a point per unit time." Thus, power does not flow--energy flows. However, except when reciting the definition of power, textbooks and journals on wave propagation use the term "power flow" almost exclusively, with only an occasional use of "energy flow." As with "current flow," we know what is meant because of the common usage which generally overshadows the strict definition." Perhaps this explanation will satisfy Jim, but perhaps not. We'll see. Walt, W2DU Hi Walt, I am familiar with the common usage of the expression 'power flow' and of course the Poynting vector. I've been explaining that "energy flows - not power" on this newsgroup for 4 years and have gotten nothing but grief for it. I think it will be more interesting to see whether your explanation will satisfy the others. 73, ac6xg |
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