by LenaPark   Last Updated December 03, 2018 10:25 AM

I have some doubts in a radio wave propagation theory. Snell's law (also known as Snell–Descartes law and the law of refraction)

$$n_{min}(w_p(h))=sin\phi_0$$

1st line - ionosphera 2 nd - earth

1. If $$\\phi_0>0\$$, then the wave inclined over zenith. Is it correct? What happens if $$\\phi_0<0\$$?

2. Is the amount of ions in wave propagation important?

3. does recombiunation happen only in D-layer?
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## wave propagation ( pict)

Updated October 30, 2018 14:25 PM