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Originally Posted by higginsdj
What evidence/proof is there that Newtonian physics should be scrapped in place of Relativity? There is the theory itself and assumptions made about light and it's behaviours and it appears to fit so I do not argue that it is a valid theory but people tend to ignore all else because we have a 'valid theory'
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Where did I explicitly state that Newtonian physics should be scrapped? I also mentioned the term modified. General relativity is an extension of Newtonian physics.
There are no assumptions made in the Scientific Method.
Quote:
Originally Posted by higginsdj
The CMB is a theory - what evidence is there? What actually supports the theory behind the interpretation of the CMB? The nature of light. Now we have made assumptions about the behaviour of light over time and distance. Again it is a valid theory but nothing more.
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Did you actually bother to read the link? The most compelling data is the
black body temperature of the microwave background which was as predicted by the BB theory. If the behavior of light changes, the distance and age of the cosmic background would change as would the black body temperature.
Quote:
Originally Posted by higginsdj
What proof is there of this? As you have said, it holds only as long as there is no evidence to refute it. So the theory holds based on the assumption that it doesn't change with distance.
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If light does change over distance and time, the chemical spectrum of hydrogen 1 billion light years away would be very different to that of hydrogen in the laboratory. The only difference is a displacement in the spectral lines due to Doppler shift which of course gets back to the expansion of the Universe.
Quote:
Originally Posted by higginsdj
My whole point is that cosmology is nothing but theory. There is no direct evidence, no proofs just data that supports a theory based on a theory supported by other data. The whole thing stands on so much theory and theory of theory's that it really is not much more than a philosophical debate at present. I am not saying it is wrong and that we haven't found the correct path - but like Newtonian Physics - we might not be playing the in the right ballpark!
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The fact that you paint Cosmology as Crock suggests a very different picture. The facts are there to take Cosmology beyond a philosophical debate.
Regards
Steven