Richard Clark wrote:
[Hint to the literate: irradiance does not move,
I've never said that power flows but a lot of pretty smart
people think it does. The Poynting Vector works just as well
for light as it works for RF. The Power Flow Vector works
just as well for light as it does for RF.
--
73, Cecil
http://www.qsl.net/w5dxp
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