On Wed, 17 Mar 2010, Paul Nicholson wrote:
>
> thing and the exponential factor. And it is working - it is
> giving the right answer for Stefan's signal!
It is one point yet. Let's wait for 3-4 at least.
> Yes too. The ionosphere boundary is more complicated. There are
> two values for the refractive index - attenuation depends on
> direction relative to Earth's magnetic field. The result is
> phase and polarisation changes.
True, true. I am familar with such problems but mainly in condensed matter
(particulary magneto-optics) not in plasma physics. But electrodynamics
itself is the same anyway.
I have some references to follow
> up here too. But it is complicated and time consuming. It
> would be nice to just use average figures for day and night
> attenuation - surely good enough for 'amateur' work.
Certanly empirical value you post is enough for practic calculations. I
have not know this value before. Besides i like to find very
approximative but simple theoretical estimations for different physical
values. Such a play:-) But boundary conditions on D-layer and exponential
factor then seems to be too complicated for simple estimations. May be
some ideas will come in future.
Regards,
Alexander
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