Quote:
Originally Posted by RascalPuff  "Could it be that we are in a contracting Universe, getting denser in proportion daily?"
Greg:
In such a conditional universe as you propose - test objects would 'fall', up, instead of down. |
I don't think so, as matter contracts in proportion with space all objects would have to remain within the 'boundary'. The way I view it two objects in contact would not seperate in contraction, but would 'accelerate' inwards at exactly the same rate ??? They would be just as 'crowded' as before because there would be less space to occupy.
Quote:
Originally Posted by N0B0DY Sorry, Rascal, was your question directed at Greg for a reason or was that a typo? |
Nob ... I don't know why Rascal asked me that question either.
Quote:
Originally Posted by N0B0DY Understood, Rascal! I'm not saying you're wrong in your proposals, only that the observed expansion of space - evidentially-based on Hubble's redshifting - can be explained by wavelengths redshifting due to increased absorption and emission of light as it propagates through denser media.
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Do you not agree that c decreases proportionate to h increasing? The wavelengths get longer and longer exponentially. |
I am not exactly sure what this question is saying, but Nob I am glad that you also see the problem of our observations only detecting space expanding.
There are 3 ways that I know of to detect the expansion of space, both of you (Rascal & Nob) seem to be mixing them together. At least from my limited understanding of them.
1 .. Use the 1/r2 relationship of light and the galaxy's intensity to determine its distance at two different times and divide the distance traveled by delta t.
2.. Observe the spectrum of an object and compare its emission lines to those of calcium and hydrogen in the laboratory.
3 .. Use Hubble's Law (the relationship between a distant galaxy's distance and its speed) to try and solve the problem.
Each one of these have a degree of independence from the others, yet still arrive at the conclusion that space is
NOT expanding where matter is bound by 'attractive' gravity (where matter is preponderant) ..... and that space
IS expanding where 'repulsive' gravity (pressure and temp are in greater proportion than Mass .. or the Cosmo Constant) dominates.
Rascal ... which in particular is Nobs question relating to ???
(we should really ask a moderator to transfer this to Roberts monthly theme ?? shouldn't we ??)
cool bananas ... greg