Timeline for Have there been studies of "old photons" to see just how constant things like Planck constant has been?
Current License: CC BY-SA 4.0
6 events
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| Aug 13, 2021 at 1:27 | vote | accept | uhoh | ||
| Mar 2, 2020 at 12:52 | comment | added | Catarina Alves | @uhoh, that is a good and important paper in this area. Additionally, more instruments are currently improving our constrain on $\alpha$ variation, for example [EXPRESSO][1]. From my experience, not many people believe the constants vary but nevertheless, it is important to test it. In Physics you can never prove anything, you can only disprove. [1]: eso.org/sci/facilities/paranal/instruments/espresso/… | |
| Mar 1, 2020 at 2:05 | history | bounty ended | uhoh | ||
| Feb 26, 2020 at 23:54 | comment | added | uhoh | but as far as an actual answer to this particular question, I wonder if something in arxiv.org/abs/astro-ph/0012539v3 applies? (found by searching for the string "astr" here) fyi I've relaxed the constraints of the question somewhat to allow for instructive answers. | |
| Feb 26, 2020 at 21:48 | comment | added | uhoh |
Thank you for your answer and +1 because this certainly sounds right though I can't yet understand what a "smart change of coordinates (system of units)" might be. Perhaps I'll ask for clarification on that in Physics SE. If so I'll ping you here in case you'd like to join and answer there. Sometimes I don't understand answers to my question there and sometimes I have to post answers to my own questions. In the mean time I'll check out these links.
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| Feb 26, 2020 at 14:56 | history | answered | Catarina Alves | CC BY-SA 4.0 |