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Keith Dysart wrote:
You are getting close to the truth. Yes, the forward and reverse travelling waves are not necessarily moving energy. How in the world is EM traveling waves existing without energy getting close to the truth? Seems it is getting closer to fantasy than anything else. The Bird wattmeter, despite its name, is computing a number with the dimension of watts, but which does not necessarily represent energy flowing (it represents flowing energy when the indicated value is 0 in one direction or the other). If the Bird is properly used, it indicates joules flowing past a point in one second in the environment for which it is calibrated. If EM energy waves ever stop flowing, they cease to be EM waves. The boundary conditions for EM waves will not permit them to travel at any other speed than d(VF) nor exist devoid of energy. This will probably (I understate) be hard to accept but is the only reasonable conclusion after examining a large number of experiments and trying to rationalize the answer to "Where does the energy in the reflected wave go?" Once it becomes clear that there is no good answer to that question, the only possible conclusion is that the question is invalid and the roots of its invalidity lie in the assumption of energy in the reflected wave. False, false, and false. *Every* EM wave is associated with ExB joules/sec. The energy supporting a reflected EM wave is either reflected or transmitted or dissipated. Those EM waves do not care a whit if you never figure them out. -- 73, Cecil, w5dxp.com |
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