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Ian White GM3SEK wrote:
Waves of voltage, yes [1]. Voltage is proportional to the E-field. Waves of current, yes [1]. Current is proportional to the H-field Waves of average power, no. ExH = joules/sec = watts. Are watts the the dimensions of power? Are the E-field and H-field usually given in RMS (average) values? Can ExH be considered as the average power in an EM wave? Are you arguing that watts are not necessarily power? Are you arguing that it is not power until it is dissipated? It can be done easily using forward and reflected waves of voltage and/or current, but that approach is off-limits for this challenge. Believers in waves of power shouldn't need it. "Waves of power" is just a semantic strawman designed to elicit an emotional response. Anyone using the term loses technical credibility. It is akin to using the 'N' word to describe race. How about believers of EM waves containing energy passing a point? e.g. joules/sec = watts measured at a point? All this is explained in joules/sec = watts without referring to volts or amps in my energy analysis article at: http://www.w5dxp.com/energy.htm Note that I do not mention "waves of power" anywhere in my article. What I do talk about is forward energy waves and reflected energy waves the average value of which can be measured at a point in joules/sec, i.e. watts. -- 73, Cecil http://www.w5dxp.com |
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