Timeline for Is Stellar Aberration a one-way speed of light measurement?
Current License: CC BY-SA 4.0
17 events
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| May 31, 2022 at 7:39 | history | reopened |
jng224 John Rennie special-relativity Users with the special-relativity badge or a synonym can single-handedly close special-relativity questions as duplicates and reopen them as needed. |
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| May 31, 2022 at 7:38 | review | Reopen votes | |||
| May 31, 2022 at 7:39 | |||||
| May 31, 2022 at 1:05 | history | closed |
WillO Dale special-relativity Users with the special-relativity badge or a synonym can single-handedly close special-relativity questions as duplicates and reopen them as needed. |
Duplicate of Can One-Way Speed of Light be Instantaneous? | |
| May 27, 2022 at 5:16 | review | Close votes | |||
| May 28, 2022 at 19:39 | |||||
| Jan 29, 2022 at 23:42 | vote | accept | fishinear | ||
| Jan 29, 2022 at 22:26 | comment | added | fishinear | @WillO See the answer I just added a couple of hours ago. It's not really the usual arguments. | |
| Jan 29, 2022 at 20:20 | review | Close votes | |||
| Jan 31, 2022 at 16:23 | |||||
| Jan 29, 2022 at 19:57 | comment | added | WillO | Have you taken the trouble to work through the usual arguments for why it is impossible to measure the one-way speed of light, apply them to your specific proposal, and determine the exact step at which something seems to go wrong? | |
| Jan 29, 2022 at 18:01 | history | edited | Qmechanic♦ |
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| Jan 29, 2022 at 17:18 | answer | added | fishinear | timeline score: 4 | |
| Jan 19, 2022 at 11:41 | comment | added | fishinear | @GumbyTheGreen Correct. The question is not whether the speed of light measured from stellar aberration is equal to c. That has been verified many times over. The question is whether we measure the real one-way-speed of light in stellar aberration, or whether the measured result c is a consequence of us defining the one-way speed to be c during the derivation of Relativity. The latter is true for many other one-way speed of light measurements. | |
| Jan 19, 2022 at 3:10 | comment | added | Gumby The Green | But if it's true that the speed of light is always c "for the purpose of aberration" like you say, that effectively means that the experiment you proposed has been done and has confirmed the isotropy of the one-way speed (at least within a certain degree of precision), correct? | |
| Jan 19, 2022 at 3:09 | comment | added | Gumby The Green | I thought to ask because I saw a related question on there and a respected user commented on it that "this question has been historically important in astronomy, going back to the determination of the speed of light by Ole Rømer in 1676, using the eclipse data of the Jovian moon Io. So I feel that this question is appropriate on this site." And that question didn't even mention stellar aberration. | |
| Jan 18, 2022 at 13:58 | comment | added | fishinear | "Have you asked this question or one like it in the astronomy SE?" - no I have not. It would not make a difference for astronomy either way, as we know that the speed of light measures as c, also for the purpose of aberration. But I was just curious, because people seem so convinced that the one-way-speed is theoretically unmeasurable. | |
| Jan 18, 2022 at 4:18 | comment | added | Gumby The Green | Interesting idea. I don't see an issue with it in theory but I'm no expert on stellar aberration. And in practice, I wonder whether it would be accurate enough to confirm isotropy in the speed of light (although it might find a large enough anisotropy), especially since annual aberration is only one of several types that have to be considered. Have you asked this question or one like it in the astronomy SE? | |
| Jul 15, 2021 at 17:32 | comment | added | user307025 | Every attempt is futile...I have tried it with looking to the sky. You would think that if the light had an infinite speed in one direction you would see different things in two directions. But no, you always end up with two ways. | |
| Jul 15, 2021 at 17:26 | history | asked | fishinear | CC BY-SA 4.0 |