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What is meant by Fabric of the Universe?

 
 
Reply Sat 31 May, 2014 01:44 pm
Is it possible for events to cause or create effects measurable at speeds greater than that of light?
For example:
Andromeda Galaxy is reportedly about 2.5 million light years away. What are the hypothetical possibilities relating to communication or travel in a shorter period of time?
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Type: Question • Score: 2 • Views: 929 • Replies: 18
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bobsal u1553115
 
  2  
Reply Sat 31 May, 2014 06:18 pm
Denim. But don't tell everyone.
tsarstepan
 
  1  
Reply Sat 31 May, 2014 06:21 pm
@bobsal u1553115,
bobsal u1553115 wrote:

Denim. But don't tell everyone.

I was under the impression it was black taffeta.
bobsal u1553115
 
  1  
Reply Sat 31 May, 2014 06:23 pm
@tsarstepan,
Only after Labor day.
0 Replies
 
neologist
 
  1  
Reply Sun 1 Jun, 2014 12:42 am
@bobsal u1553115,
Yeah, but what does that mean?
rosborne979
 
  1  
Reply Sun 1 Jun, 2014 05:50 am
@neologist,
Where did you hear that phrase "fabric of the universe"? Can you present it in the original context?
timur
 
  1  
Reply Sun 1 Jun, 2014 06:32 am
@rosborne979,
Religious stuff:

http://ecx.images-amazon.com/images/I/71FKRH%2BvrkL.jpg
0 Replies
 
neologist
 
  1  
Reply Sun 1 Jun, 2014 10:15 am
@rosborne979,
rosborne979 wrote:
Where did you hear that phrase "fabric of the universe"? Can you present it in the original context?
Should I have said fabric of the cosmos?
Sorry, I thought using a comparable word would bring more response
tsarstepan
 
  2  
Reply Sun 1 Jun, 2014 10:34 am
@neologist,
bobsal u1553115 wrote:

Denim. But don't tell everyone.


neologist wrote:

Yeah, but what does that mean?


Life is meant to be one very long Levi's Jeans commercial. All good looking 20 somethings having feelings and such.
dalehileman
 
  1  
Reply Sun 1 Jun, 2014 01:48 pm
@neologist,
It means, Neo, about the whole 9 yards

But what does this have to do with the speed of light

Presumably a particle having mass is limited to velocity c though some "processes" are thought to go faster but they can't carry any info

https://www.google.com/#q=exceeds+speed+of+light
neologist
 
  1  
Reply Sun 1 Jun, 2014 01:55 pm
@tsarstepan,
I wrote:
What is meant by Fabric of the Universe?
bobsal u1553115 wrote:
Denim. But don't tell everyone.
Then, I wrote:
Yeah, but what does that mean?
tsarstepan wrote:
Life is meant to be one very long Levi's Jeans commercial. All good looking 20 somethings having feelings and such.
Drat! I've been trying to lose enough weight to get back into my 38 38 501s. Now you say that's only for 20 somethings?
0 Replies
 
neologist
 
  1  
Reply Sun 1 Jun, 2014 01:59 pm
@dalehileman,
dalehileman wrote:
It means, Neo, about the whole 9 yards

But what does this have to do with the speed of light
Wait?
Nine yards of denim? I was thinking of something more like the space-time continuum, curved space, and speculations such as that.
0 Replies
 
rosborne979
 
  1  
Reply Sun 1 Jun, 2014 02:39 pm
@neologist,
Brian Greene's mention of the Fabric of the Universe, is an analogy for a structural characteristic of space-time predicted by Einstein and demonstrated by the effect called Frame Dragging (which has been measured by gyroscopic satellites).
neologist
 
  1  
Reply Sun 1 Jun, 2014 02:51 pm
@rosborne979,
Is space bent or does it simply appear to be bent, depending on the observer?
Does time move more slowly, or does it simply appear to move more slowly, depending on the observer?
If you travel in a straight line indefinitely, will you eventually return to your origin?
Ticomaya
 
  2  
Reply Sun 1 Jun, 2014 02:55 pm
@tsarstepan,
tsarstepan wrote:
bobsal u1553115 wrote:
Denim. But don't tell everyone.
I was under the impression it was black taffeta.

No, it's cotton.

"The touch, the feel of cotton ..."
0 Replies
 
rosborne979
 
  1  
Reply Sun 1 Jun, 2014 04:59 pm
@neologist,
neologist wrote:

Is space bent or does it simply appear to be bent, depending on the observer?

Mass warps space. This is demonstrated in many ways, but gravitational lensing is one observed phenomena which exactly matches predictions by General Relativity.
neologist wrote:
Does time move more slowly, or does it simply appear to move more slowly, depending on the observer?

Clocks in a higher gravitational field show a change which exactly matches the changes predicted by General Relativity.
neologist wrote:

If you travel in a straight line indefinitely, will you eventually return to your origin?

I don't know. I've lost track of which cosmological topology is currently on top of the probability list, but I think the most recent answer is "no" based on the accelerating expansion which was observed back in the late 90's.
neologist
 
  1  
Reply Sun 1 Jun, 2014 05:19 pm
@rosborne979,
Does speculation about the Higgs Field fit in anywhere here?
rosborne979
 
  1  
Reply Sun 1 Jun, 2014 07:27 pm
@neologist,
neologist wrote:

Does speculation about the Higgs Field fit in anywhere here?
Not directly. The Higgs Field is supposed to be what gives energy (and matter) mass. The "Fabric" of the Universe is more of an analogy to a structural characteristic of space-time as represented by General Relativity.
0 Replies
 
bobsal u1553115
 
  2  
Reply Mon 2 Jun, 2014 08:36 am
@dalehileman,
Quote:
It means, Neo, about the whole 9 yards


See? Denim.
0 Replies
 
 

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