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LAN_403

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Sun Jul 02 2006, 01:00AM

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I mean if everything doubled in size over night.
Would you know?

Chris Russell

Sun Jul 02 2006, 01:28AM

... not Russel!
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Well, size is relative, too. Relative to some fixed measurement. In order for your question to make sense, you'll have to indicate some fixed measurement that did not also "double in size." Otherwise the question is meaningless, equivalent to asking "if all time stopped for a billion years, freezing everything in the universe, and then started again, would we know?"

ragnar

Sun Jul 02 2006, 01:30AM

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I suppose if the universe was only one day old, then light travelled for another day... wait a second.. what?

Ah, redshifting and notable change of intergalactic distances?

HV Enthusiast

Sun Jul 02 2006, 03:12AM

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The question, is, "if the universe doubled in size overnight, how would you tell?"

Although this question may seem meaningless on the outside, its one of the most classic questions presented on the topic.

Geesh, i remember we spent two weeks worth of lectures debating this single question in an advanced physics course back in my college days . . .

Carbon_Rod

Sun Jul 02 2006, 05:26AM

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"I mean if everything doubled in size over night. Would you know?"

If you are referring to homogeneity in space would imply a conservation of energy -- then yes it could be evident.

Steve Conner

Sun Jul 02 2006, 09:58AM

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If nothing can travel faster than light, then it's just not possible for the universe to double in size overnight, because it's too big. (We measure distances between stars in light-years.) So the question is meaningless and you shouldn't expect to be able to find an answer.

HV Enthusiast

Sun Jul 02 2006, 12:36PM

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Steve Conner wrote ...

If nothing can travel faster than light, then it's just not possible for the universe to double in size overnight, because it's too big. (We measure distances between stars in light-years.) So the question is meaningless and you shouldn't expect to be able to find an answer.

Ah, so if nothing can travel faster than light, how do you explain the big bang. The universe went from practically a singularity to an entire universe in under a microsecond.

So again, I ask, if a similar process took place, hypothetically of course, and the space expanded by a factor of 2 (i.e. doubled in size) overnight, is there anyway you could tell it had occurred ? ? ?

Marko

Sun Jul 02 2006, 12:47PM

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Ah, so if nothing can travel faster than light, how do you explain the big bang. The universe went from practically a singularity to an entire universe in under a microsecond.

Universe was *much* smaller during inflation than today, but expansion took some incredibly small amount of time.

Mechanism is a bit more complicated but nothing ever gone nor will be going by speed of light or more. Inflation was driven by expansion of 'space' itself, and insinde it nothing actually moved at speed of light.

I just figured out that your question was osmething like 'if we could repeat inflation in our universe today, and double it's size, what would happen'?

From our point I think nothing would be visible to us, if thinking of it like big-bang inflation thing.

cbfull

Sun Jul 02 2006, 03:32PM

Registered Member #187 Joined: Thu Feb 16 2006, 02:54PM
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I agree that the flux theory website I linked to is not without it's flaws, but it's more the concept that I am after.

I personally believe that everything in the universe is made out of sub-dimensional wavelengths/waveshapes. With this theory, there is a much simpler explanation for just about everything in the universe. The reference to a dodecahedron as a model for what space is filled with is nothing new. It's a concept for visualization, not a real thing.

I think that guys site could use a lot of work, but the basic concepts are worth reading through. His explanation for the force of gravity is very sloppy, and doesn't really seem to explain anything.

HV Enthusiast

Sun Jul 02 2006, 05:54PM

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I still vote that we are just in giant snow globe owned by some autistic child. Just like that show St. Elsewhere . . .

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