Yes, I thought relativity was what you meant in your statement, and it would
make me happy as well....
I understood your reasoning why there no would be no change in the interference
pattern no matter how fast the medium is, I just did not understand the
reasoning for the red shift and blue shift. My understanding is that a red
shift is caused from either the source or recipient moving away from the other,
and a blue shift from the source or recipient moving towards the other. In
your example, both the star and the observer are moving through the water, but
they are attached by the tow rope, therefore they are moving at the same speed
(not towards each other or way from each other), so what causes the shifts?
You say the light from the star red shifts as it recedes, but to the observer
being towed, how is it receding? Are you saying that the acceleration and
deceleration (caused by the directional current of the water) are causing these
shifts, or what (and if so why?... this is what I am missing)? Again, I am
just trying to understand that part of what your are saying.
-Russ
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