On 13 sep, 15:31, Richard Clark wrote:
On Sun, 12 Sep 2010 22:46:16 -0700 (PDT), lu6etj
wrote:

PSE explain me MISMATCH.

What is the characteristic Z of free space or air?

What is the characteristic Z of Water (plain, with mud, or salty)?

What is the ratio between the two?

How much power in one, transits the interface and proceeds through the
other?

[hint] if not much, it is reflected at the interface.

73's
Richard Clark, KB7QHC

Hey Richard

I said you, "mismatch" it is a magical word. TL reflected waves also
are explainabe with "mismatch" word. However mismatch it is a name for
a physical phenomena, what is that? When we talk about a traveling
wave reaching the "mismatch" point we can try to explain WHY the
reflection occur. You can talk about electric or magnetic field
collapsing in discontinuity, etc. One step beyond of a magical word
there are another magical words, electricity, magnetism for example,
well that is the matter: to advance in de why's and the how's,
otherwise we had remained in the realm of Newton and Huygens.
(read about Compton effect discovery)

73 - Miguel LU6ETJ