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Author Topic:   General Relativity.
Xeriar
Inactive Member


Message 18 of 129 (244965)
09-19-2005 3:48 PM
Reply to: Message 16 by madeofstarstuff
09-17-2005 1:17 PM


Re: Spatial density
quote:
What confuses me about this idea though, is with this increase in density of space around an object with mass, why does your speed increase when you have to traverse more space? I’ll clarify; if you are traveling at a constant velocity, I assume this means that you are flowing through a certain number of spatial units per unit time and this ratio is constant, regardless of an increase in spatial density (I don’t want to misuse the term metric-field, but perhaps this is what it is). If you approach an object with mass, this number of spatial units is becoming more numerous and there are more “lines of magnitude” of a metric-field, I suppose.
It does. You perceive time to slow down in a gravitational field or, more appropriately, a 3rd observer from afar would see your clock ticking a bit faster than theirs.
This makes sense up to items crossing an event horizon of a black hole, where a 3rd observer would see you fall in, but you would never perceive reaching it.

This message is a reply to:
 Message 16 by madeofstarstuff, posted 09-17-2005 1:17 PM madeofstarstuff has replied

Replies to this message:
 Message 19 by cavediver, posted 09-19-2005 7:51 PM Xeriar has replied
 Message 22 by madeofstarstuff, posted 09-21-2005 11:57 AM Xeriar has not replied

  
Xeriar
Inactive Member


Message 20 of 129 (245022)
09-19-2005 8:52 PM
Reply to: Message 19 by cavediver
09-19-2005 7:51 PM


Re: Spatial density
Bah
Where did I get that mixup from!?
Anyways, GPS satellites already have to correct for this difference.

This message is a reply to:
 Message 19 by cavediver, posted 09-19-2005 7:51 PM cavediver has not replied

  
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