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W5DXP wrote in message ...
Tom Bruhns wrote: (Agreeing with Keith...) Of course there MUST be instantaneous power, because if there is not, then one cannot find energy by taking the integral of power over time. The instantaneous value may be zero, or positive, or negative, of course. Or perhaps another way to look at it is that if energy, which itself is a function of time, is differentiable, then power must take on instantaneous values. I don't think there is any argument over whether it exists in the math model or not. My argument is that the concept lacks a lot of usefulness. Ah, I see. Well, consider this: the concept IS useful to me. That's not an arguable point, as I am the only one who can evaluate it. If it isn't to you, you don't have to use it. I'll not argue with that. Cheers, Tom |
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