From: fizzbintuesday@that-google-mail-domain.com   
      
   Phil Hobbs wrote:   
   > On 2020-10-14 16:58, Tom Del Rosso wrote:   
   >> As the story goes, the E field starts with high impedance and it goes   
   >> down until it's equal to the H field impedance in the far field. It's   
   >> just so counter-intuitive that impedance would go down as you get   
   >> farther from the source. Is there a somewhat intuitive way to look at   
   >> that?   
   >>   
   >> On another matter, I've asked before about the disagreement between   
   >> some books with diagrams of E and M in phase and some books showing   
   >> them 90 degrees out of phase. Now I found one source that says   
   >> they're in phase in the near and 90 degrees in the far.   
   >>   
   >>   
   >   
   > For a propagating wave in a lossless medium, E and H are in phase. If   
   > the medium is isotropic, they're also orthogonal.  In the near field   
   > it varies depending on the situation, e.g. between a waveguide horn   
   > and a wire antenna.   
      
   Thank you.   
      
      
   > The only wave impedance I know about is sqrt(E/H).   
      
   What does it even mean for a magnetic field to have impedance? Shouldn't   
   it be reluctance?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)