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What is Gravity, how does it come about.

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JonF
Member (Idle past 189 days)
Posts: 6174
Joined: 06-23-2003

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Message 76 of 79 (96293)
03-31-2004 9:39 AM 		Reply to: Message 74 by Lizard Breath
03-31-2004 5:55 AM

Re: what is curved space
I am only understanding that a gravity bend would speed up anything with mass but not change the distance it has to travel
​
The distance is calculated differently in GR. In ordinary flat Euclidean space the shortest distance between two points is the 3D version of the Pythagorean theorem:
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distance = sqrt(x2 + y2 + z2)
​
In relativistic space-time, with the "t" coordinate added, the formula is different:
​
distance = sqrt(x2 + y2 + z2 - t2)
​
The minus sign on the "t" coordinate leads to all sorts of interesting stuff.
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V-Bird
Member (Idle past 5606 days)
Posts: 211
From: Great Britain
Joined: 03-22-2004

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Message 77 of 79 (96358)
03-31-2004 1:37 PM

Can we get on to Quantum loop gravity or are we just stuck at yet another impasse?
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Lizard Breath
Member (Idle past 6717 days)
Posts: 376
Joined: 10-19-2003

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Message 78 of 79 (96368)
03-31-2004 2:16 PM 		Reply to: Message 77 by V-Bird
03-31-2004 1:37 PM

impasse
Is that a planear impasse or a curved gravity type?
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V-Bird
Member (Idle past 5606 days)
Posts: 211
From: Great Britain
Joined: 03-22-2004

V-Bird Posts Only
Message 79 of 79 (96477)
03-31-2004 8:18 PM 		Reply to: Message 78 by Lizard Breath
03-31-2004 2:16 PM

Re: impasse
No QLG proposes space-foam no less... 'The universe in a soap-sud' as I kindly called it recently...
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