Originally Posted by aastrotech

I'll quote you from the first paragraph of the rules; “Be polite”.

While sophisticated concepts composed a number of elements have similarities with a salad in that they both have a number of elements, rude comments like "word salad" "woo woo'" and "hand waving" are verbal garbage. They give no clue as to where to start to improve the poster's understanding and they make no point that can be disputed. They are the verbal equivalent of nonfalsafieable evidence.

Originally Posted by aastrotech

It is an indulgence which I will not grant to communicate with a rude person. It is an indulgence for myself to answer polite questions. In fact it is a pleasure. I have no problem answering polite questions. But I can't get a grip on questions with rude comments mixed in. I think that if you all edit your questions and points carefully to remove the rude comments you will find that some of your points fall apart for yourselves.

Originally Posted by papageno

And it does not answer my question: can you show us how anisotropy is responsible for refraction of waves?
Using you example: can you shows us that the light of the explosion is refracted?

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A spherical wave is the same in any direction (remember: "Isotropy is uniformity in all directions" and "Isotropic radiation has the same intensity regardless of the direction of measurement, and an isotropic field exerts the same action regardless of how the test particle is oriented" from your Wikipedia link), therefore it is isotropic.

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How about a stick of dynamite and a nuclear bomb, both a high altitude? The shockwaves are both spherical.

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What if we don't have a complicated wave?
What if it is just a spherical wave (which is isotropic) or a simple plane wave (which is anisotropic)?

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The surface is no longer homogeneous either.
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And if you look at it from the point of view of the pucker, the surface is isotropic.
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But the effect does not depend on the direction in which the wave travels across surface.

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Except that in your analogy the refraction does not depend on the direction of travel, and therefore it is not a matter of isotropy or anisotropy of the surface. Infact, it is the consequence of having a region of the surface being different than the surrounding areas: an inhomogeneity. Just like a lens in optics.

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Show us examples from actual textbooks where they say "light travels through an electromagnetic field" or "sound moves through a density field".

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Light is a wave, it is not an analogy.
An electromagnetic wave satisfies a (mathematical) wave equation.