Timeline for Coordinates for FLRW metric
Current License: CC BY-SA 3.0
11 events
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| Apr 13, 2017 at 12:40 | history | edited | CommunityBot |
replaced http://physics.stackexchange.com/ with https://physics.stackexchange.com/
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| Jan 26, 2015 at 20:19 | comment | added | Shadumu | spatial slicing means the spatial part of the metric at some constant time right? then if in two coordinates the time part in the metric is different, when we calculate the distances between two stars (set dt=0), we will get different results. | |
| Jan 26, 2015 at 20:09 | comment | added | Christoph | @user3229471: it will not vary between coordinates that agree on spatial slicing | |
| Jan 26, 2015 at 19:59 | comment | added | Shadumu | the distance within a spatial slice is not the proper distance. it clearly varies in different coordinates | |
| Jan 26, 2015 at 19:56 | comment | added | Christoph | @user3229471: the distance within a spatial slice is well-defined; length-contraction is only possible because observers in relative motion do not agree on spatial slicing... | |
| Jan 26, 2015 at 19:42 | comment | added | Shadumu | i think the distance within spatial slice at some constant time is not the same in different coordinates, just like length contraction. Hence, in some coordinates, the universe could be not expanding as a(t), is there a notion of expanding universe independent of coordinates. | |
| Jan 26, 2015 at 18:34 | history | edited | Christoph | CC BY-SA 3.0 |
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| Jan 26, 2015 at 18:34 | history | rollback | Christoph |
Rollback to Revision 2
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| Jan 26, 2015 at 18:30 | history | edited | Christoph | CC BY-SA 3.0 |
link to Jerry's answer
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| Jan 26, 2015 at 17:44 | history | edited | Christoph | CC BY-SA 3.0 |
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| Jan 26, 2015 at 17:37 | history | answered | Christoph | CC BY-SA 3.0 |