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Top Poster: glsammy (13,193) | | Welcome to our newest member, ega | | |
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28-01-2009, 12:12 PM
| | Frozen | | Join Date: Jan 2009 Location: UK, Manchester, Denton
Posts: 24
| | | Other way to look at the Universe's Expansion? An often-used model for universe's centerless expanding, is a rubber ball or balloon with dots painted on it, representing galaxies (or clusters of galaxies). When the ball grows larger, the distances between the dots grow.
It would seem to me that on a real inflating ball, dots painted on it would grow proportionally - to have it represent the expansion of the universe more accurate, the dots should be remaining their original size, while the ball grows.
Now, a growing ball with dots remaining the same size equals a ball remaining the same size with shrinking dots on it: if you only look at the size of the ball and the size of the dots, there is no way to distinguish between the two.
So I was wondering to what extent the expansion of the universe could also be regarding as a 'shrinking in' on the local levels (galaxies, clusters).
Would looking at the universe's expansion this way - let's coin this 'the shrinking dot' model -
1. be in harmony with the observed redshift?
2. imply that the fundamental forces shrink accordingly? (because we don't experience any change on our local level, so if matter is shrinking, the forces holding it all together should be shrinking proportionally to maintain their relative strenghths)
This 'shrinking dot model' would be similar to saying the earth is the unmoving center of the solar system, with the sun circling it, and the other planets circling the sun. Or saying that, when Chuck Norris walks, he remains where is, while the earth moves under his feet (apparently moving the entire universe with it). Not really untrue, but unnecessary elaborate.
Nevertheless, I am curious if this 'shrinking dot' model is a valid (be it not necessarily the most useful) way to look at it. If so, I think it would be easier for me to visualize what happened on the grand scale. | | Thread Tools | | | | Display Modes | Threaded Mode |
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