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Richard Harrison wrote:
Power is acceptable and accepted. Why avoid the term? Jim Kelley, AC6XG, has convinced me to make the distinction between the nature of EM energy and the nature of EM power. Power is what exists at a point or plane. Energy is what is moving past the point or through the plane. Reflected power is measured at a point. Reflected energy is what is doing the moving past that point. In addition, there's the difference in definitions between the fields of RF engineering and the field of physics. In physics, zero work implies zero power. I am not avoiding power. I am avoiding "power waves" and "power flow". The dimensions of power flowing past a point would be watts/second. I don't know what physical quantity that would represent. -- 73, Cecil http://www.w5dxp.com |
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