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Author Topic: NATURAL VLF RADIO PHENOMENA  (Read 2027 times)
WEATHERLAWYER
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Posts: 4




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« on: May 01, 2005, 06:47:21 PM »

Hi.

Does anyone know where I can find the rest of these articles?

A BEGINNER'S GUIDE TO NATURAL VLF RADIO PHENOMENA

http://www.loscrittoio.it/Pages/MM-0700.html

I managed to locate three of them, I believe there are 5 altogether. They may have been removed as the writer updated his material or moved sites.

Is there anything on this site about the phenomena? Or does anyone have similar links in his favourites?
Thanks in advance.

Mike.
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WEATHERLAWYER
Member

Posts: 4




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« Reply #1 on: May 04, 2005, 01:42:30 PM »

Suck on this:

shadow zone�(Often called diffraction zone.)

May be used for any region that would not be illuminated by a given source of electromagnetic (or acoustic) radiation if it propagated strictly according to ray optics in a homogeneous (on the scale of the wavelength) medium.

Some radiation, however, does penetrate shadow zones because of scattering by the propagating medium or by obstacles within it.

Because of the widespread misconception that diffraction is fundamentally different from scattering, the term diffraction zone is also used, especially by radio engineers, who might say that the earth diffracts radio waves into this zone (and probably would ignore scattering by the atmosphere).

Yet all radiation that penetrates a shadow zone does so because of scattering by the atmosphere and by........

http://amsglossary.allenpress.com/glossary/search?id=shadow-zone1
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