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Richard Clark wrote:
On Thu, 30 Jun 2005 00:22:48 GMT, james wrote: In electrical engineering it is the instantaneous power density of two signals passing at the same spot from two directions. That is called Convolution. Hi James, No, it is called Superposition, and that is done only with voltage or current. What you are describing may be associated with the Fourier convolution of power series - an entirely different field (and not even additive). 73's Richard Clark, KB7QHC Convolution is a mathematical stunt you can perform with two functions: f(x)* g(x) = (integral from 0 to x) f(t)g(x-t) dt. At least that's how it's explained in Schaum's Outline book _Differential Equations_. It's pretty tough to see how it relates to power in a transmission line. Maybe someone has a use for it there. 73, Tom Donaly, KA6RUH |