Timeline for Can One-Way Speed of Light be Instantaneous?
Current License: CC BY-SA 4.0
35 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 30, 2022 at 9:15 | comment | added | m4r35n357 | Is there a useful global definition of "direction" that I have missed? Otherwise how can the speed of light be "directional" in any meaningful sense? I am amazed that this is not usually brought up in these discussions . . . | |
| Aug 3, 2022 at 6:00 | history | tweeted | twitter.com/StackPhysics/status/1554708644167647233 | ||
| Jul 12, 2022 at 2:26 | history | protected | Buzz♦ | ||
| Jul 11, 2022 at 21:14 | answer | added | Kenneth Davies | timeline score: -4 | |
| Dec 1, 2021 at 11:46 | history | edited | Qmechanic♦ |
edited tags
|
|
| Nov 2, 2021 at 8:35 | answer | added | Markoul11 | timeline score: -1 | |
| Nov 2, 2021 at 1:13 | answer | added | Martin Harris | timeline score: 2 | |
| Sep 15, 2021 at 0:26 | answer | added | Frogton | timeline score: -4 | |
| Jan 29, 2021 at 16:33 | answer | added | Andrew Steane | timeline score: 17 | |
| Jan 28, 2021 at 16:21 | answer | added | user287272 | timeline score: -4 | |
| S Nov 11, 2020 at 13:01 | history | bounty ended | CommunityBot | ||
| S Nov 11, 2020 at 13:01 | history | notice removed | CommunityBot | ||
| Nov 6, 2020 at 13:48 | comment | added | Criticizing Israel not allowed | @AdrianHoward and how is the vibration period affected if the atom is moving? | |
| Nov 6, 2020 at 3:02 | comment | added | Adrian Howard | @user253751 Ok then if c is direction dependent then Caesium 133 would vibrate back at 1/2 c then forwards instantaneously, no overall change | |
| Nov 5, 2020 at 13:15 | comment | added | Criticizing Israel not allowed | @AdrianHoward Yes and the caesium-133 atoms would vibrate in less time when the Earth was moving in one direction, because the vibration is an electromagnetic effect, affected by the speed of light... | |
| Nov 4, 2020 at 6:04 | vote | accept | FoundABetterName | ||
| Nov 4, 2020 at 4:27 | comment | added | FoundABetterName | how does that still help i don't get it @AdrianHoward We are concerned with measuring the difference not the exact definition of the second | |
| Nov 3, 2020 at 17:51 | comment | added | Adrian Howard | @user253751 Caesium 133 has a well established unperturbed transition frequency of 9,192,631,770 Hz, equal to 1 second. | |
| Nov 3, 2020 at 17:12 | answer | added | The_Sympathizer | timeline score: 7 | |
| Nov 3, 2020 at 16:41 | answer | added | user139020 | timeline score: 0 | |
| Nov 3, 2020 at 14:25 | history | edited | Dale | CC BY-SA 4.0 |
added 16 characters in body
|
| Nov 3, 2020 at 14:24 | answer | added | Dale | timeline score: 43 | |
| Nov 3, 2020 at 14:17 | comment | added | Criticizing Israel not allowed | @AdrianHoward don't forget that all our clocks would run faster when Earth was moving in one direction than in the other. How would we measure that it was 10 minutes out of sync? With clocks... | |
| S Nov 3, 2020 at 11:46 | history | bounty started | FoundABetterName | ||
| S Nov 3, 2020 at 11:46 | history | notice added | FoundABetterName | Authoritative reference needed | |
| Nov 1, 2020 at 15:59 | comment | added | FoundABetterName | @AdrianHoward I have not had any formal training in relativistic mechanics yet so my sole source for the question is the video which I presume you've watched reading your comments. Do you imply that the basic premise of the video is wrong that the postulation of light having equal speeds by Einstein isn't necessary as we can see with the Earth Mars observation? So when he says it can be anything in the 2 directions (within limits) he's technically lying and is it a already settled thing in physics that light has same speed in all directions not by convention but by proofs or observation? | |
| Nov 1, 2020 at 15:37 | comment | added | Adrian Howard | @FoundABetterName Mars orbit cannot physically change that much for no reason, our atomic clocks do not deviate that much, and Mars is observed to be where it is calculated to be in all points of its orbit. so light from Mars to Earth does not have a preferred direction. | |
| Nov 1, 2020 at 15:20 | review | Close votes | |||
| Nov 3, 2020 at 11:47 | |||||
| Nov 1, 2020 at 14:25 | comment | added | FoundABetterName | How are we certain it does not? and why would it every time wouldn't we measure and align clocks just once? @AdrianHoward | |
| Nov 1, 2020 at 14:20 | comment | added | Adrian Howard | Also he never brought up the Michelson - Morley experiment. | |
| Nov 1, 2020 at 14:13 | comment | added | Adrian Howard | If what the video said were true then Mars orbit would oscillate at least 10 minutes out of sync every 180 degrees, it does not. | |
| Nov 1, 2020 at 11:18 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
edited body; edited tags; edited title
|
| Nov 1, 2020 at 10:20 | comment | added | FoundABetterName | oh understood @NiharKarve | |
| Nov 1, 2020 at 10:17 | comment | added | FoundABetterName | I reckon then that this postulate must be at the core of all our modern theories which incorporate relativity @NiharKarve | |
| Nov 1, 2020 at 9:55 | history | asked | FoundABetterName | CC BY-SA 4.0 |