On Nov. 12th I wrote:
>How should a living White Pine tree be modeled at HF?
...to which George Hagn <ghagn_at_pop.mail.rcn.net> replied:
>...you could use sigma of about 10-6 S/m for the tree conductivity....
I'm bothered and confused. This (10^-6 S/m) seems an extremely low
conductivity. A tree trunk having cross-sectional area of 1 m^2 would
have a resistance per unit length (vertically) of 1 Megohm.
Is my mental arithmetic screwed up again (which it is painfully
often); are you remembering the conductivity value in some other
units; or what?
-Chuck
Received on Sun Nov 19 2000 - 19:01:39 EST
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