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Old March 22nd 07, 08:06 PM posted to rec.radio.amateur.antenna
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Posts: 3,521
Default Revisiting the Power Explanation

Owen Duffy wrote:
This gets confusing. You are talking about "the amount of EM wave energy
contained in a transmission line" and now you qualify it with "values
averaged over an integer number of RF cycles in one second". Average
energy over time is POWER... are you talking about power and foxing us by
calling it energy. I am confused.


I have been convinced by Jim, AC6XG, to abandon the word
"power" because of the difference in definitions between
the field of physics and the field of RF engineering.

Jim would argue with you and say that average energy over
time is NOT necessarily POWER and is only power if actual
work is done which, of course, is not done by a reflected
wave.

So you need to go off and argue with Jim over the
definition of "power". Instead of talking about power,
Jim has convinced me to talk about watts or joules/sec
which he says are not necessarily power. The confusion
comes from the field of physics, not from me. While you
are talking to Jim, get him to explain the definition
of "transfer".
--
73, Cecil http://www.w5dxp.com
 
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