Timeline for How to explain apparent acceleration due to the expansion of the universe and inertial reference frames?
Current License: CC BY-SA 4.0
10 events
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| Mar 1, 2021 at 10:42 | comment | added | timm | "I am also interested in the question if these two objects should be considered to exist in the same inertial reference frame." No, not in the same. In FLRW-spacetime you can assume local inertial frames in the vicinity of A and B but not one which covers both. Note this doesn't hold in our inhomogeneous universe. | |
| Mar 1, 2021 at 10:24 | comment | added | timm | "After a certain period of time, the space between the two objects is measured to have expanded." Correct. Expanding space means that the proper distances between comoving observers (who see the universe isotropic) are increasing proportional to the scale factor. You can imagine such (uncharged) observers between A and B and as they don't feel the electrostatic force their proper distances would increase. In other words they would participate in the expansion of the universe (in contrast to A and B). | |
| Mar 1, 2021 at 10:06 | comment | added | timm | "Two spherical objects A and B are at rest in empty space and are charged in such a way that the net force between them (gravitational and electromagnetic) is exactly zero." Yes this is correct (with some caveats). See my comments to @Dale. | |
| Feb 28, 2021 at 20:12 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
edited tags; edited title
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| Feb 28, 2021 at 19:57 | answer | added | Cort Ammon | timeline score: 0 | |
| Feb 28, 2021 at 9:52 | history | became hot network question | |||
| Feb 28, 2021 at 5:16 | answer | added | benrg | timeline score: 5 | |
| Feb 28, 2021 at 2:56 | history | edited | Dale | CC BY-SA 4.0 |
edited body
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| Feb 28, 2021 at 2:13 | answer | added | Dale | timeline score: 4 | |
| Feb 28, 2021 at 1:52 | history | asked | Eoin | CC BY-SA 4.0 |