Timeline for How to calculate the time on planet B for an event that happened on planet A?
Current License: CC BY-SA 4.0
20 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 18, 2020 at 22:35 | vote | accept | JBH | ||
| Sep 20, 2020 at 17:37 | comment | added | Justin Thyme the Second | I am in total agreement that Ash's answer is competent, science-based, relevant, and pertinent. Much more fitting, however, to the question 'What are the pitfalls to any attempt to calculate the time on Planet B for an event that happened on Planet A, given the constraints and limits of Relativity as proposed by Einstein?' Using Quantum Mechanics principles, however, the question has a very different answer. You allude by your 'science-based' tag, without actually specifying it as a criteria, that all answers must adhere to Einstienian principles. I think that caused a lot of consternation. | |
| Sep 20, 2020 at 17:05 | comment | added | JBH | @JustinThymetheSecond I draw your attention to the fact that I'm not asking that the time on Plerte reflect the precise moment of an event on Earth. I am asking how to convert a time reference from Earth into a meaningful reference on Plerte. And considering my post's first paragraph, Ash's answer is the first that actually has any value (in fact, it could be used in a good scifi story). | |
| Sep 20, 2020 at 16:59 | comment | added | JBH | @user2754 Ditto what I just explained to Ton Day. | |
| Sep 20, 2020 at 16:59 | comment | added | JBH | @TonDay Real world questions are permitted on this site otherwise 80% of the questions would need to be closed as physics, history, anthropology, etc. questions more suitably asked elsewhere. | |
| Sep 20, 2020 at 15:57 | comment | added | Justin Thyme the Second | I would bring your attention to the 'Ladder paradox' in simultaneity. Even IN THE SAME RELATIVISTIC FRAMEWORK, the 'at the same time' time is different between two places. I presume that it is completely baloney. en.wikipedia.org/wiki/Ladder_paradox I defer to @Ash in his/her answer for a description of why the times are different and can not be computed - too many variables, too many unknowns, too many equations, unless you ignore relativity as positied by Einstein. | |
| Sep 20, 2020 at 9:13 | comment | added | user2754 | this is a physics problem phrased like a math problem on the wrong stack exchange for either -1 | |
| Sep 20, 2020 at 9:00 | answer | added | Ash | timeline score: 7 | |
| Sep 20, 2020 at 7:21 | comment | added | Ton Day | VTC because it feels like this is such a pure and simple physics problem you may as well just ask it on the physics stack exchange. | |
| Sep 20, 2020 at 6:36 | review | Close votes | |||
| Sep 20, 2020 at 19:33 | |||||
| Sep 20, 2020 at 6:06 | answer | added | Keith Morrison | timeline score: 0 | |
| Sep 20, 2020 at 4:19 | answer | added | N. Virgo | timeline score: 3 | |
| Sep 20, 2020 at 3:27 | comment | added | JBH | @JustinThymetheSecond There will never be a time "X" on planet B relative to planet A? I haven't had a chance to read through the various sources on simultaneity yet - but I know baloney when I hear it. By that logic, since there was never a time on Earth relative to the Big Bang, the estimated age of the universe is a universal hoax. What I've read so far about simultaneity suggests that you and AlexP are misapplying it. All it appears to suggest is that it's impossible to create a "universal time" for all planets, which is a truth that inspired this Q in the first place. | |
| Sep 20, 2020 at 1:06 | comment | added | Justin Thyme the Second | So if there is no way to determine simultaneity, then there is no way to determine what happened on planet B at exactly time X (say, three years, two months, three days, five hours, 10 minutes ago) planet A time), since there will never BE a 'time X' on planet B relaticve to planet A.. | |
| Sep 20, 2020 at 0:56 | comment | added | Justin Thyme the Second | There would, at the least, be one answer relative to planet A, and another answer relative to planet B, since it is impossible to establish or determine simultaneity. There would also be another answer relative to planet C, and so on. Time dilation just will not allow a trivial answer. In other words, there is no possibility, under your criteria, as an event happening on two planets several light years apart at the same time mutually relative to an observer on both planets. | |
| Sep 20, 2020 at 0:47 | comment | added | Justin Thyme the Second | I suggest what you are asking for, under the criteria that you have set, is, if not impossible, then certainl not trivial (there is more than one solution for x) . You discount simultaneity, FTL, instantaneous communications, and you state the information can not travel faster then the speed of light. Therefore, it is completely irrelevant as to the time on planet A that something happened on planet B, some several ligght years distant. Since you can not determine if something on planet A happened AT THE SAME TIME as something on planet B, why is it necessary to translate times? | |
| S Sep 19, 2020 at 15:43 | history | mod moved comments to chat | |||
| S Sep 19, 2020 at 15:43 | comment | added | L.Dutch♦ | Comments are not for extended discussion; this conversation has been moved to chat. | |
| Sep 19, 2020 at 4:06 | history | notice added | L.Dutch♦ | Hard Science | |
| Sep 19, 2020 at 3:14 | history | asked | JBH | CC BY-SA 4.0 |