Timeline for Why do we say that light travels at a speed?
Current License: CC BY-SA 3.0
8 events
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| Jul 16, 2014 at 6:56 | comment | added | DarioP | @DerekRoberts you are confusing the two frames of references. Just drop the invalid one. Things like "I existed outside of time" are just meaningless. It is neither predicted nor allowed by the relativity equations. You have to come up with a stronger theory before starting to reason about that. | |
| Jul 15, 2014 at 16:48 | comment | added | Derek Roberts | If you were able to measure me, you would measure that I was all three, I would be at the start point, I would be covering the entire length of the distance, and I would be at the end point, all in your single measurement. So you wouldn't be measuring my speed over a distance, you would be measuring my length over an infinitely small unit of time. | |
| Jul 15, 2014 at 16:15 | comment | added | Derek Roberts | For example, you might make an observation of where I started, and then make an observation of where I ended, and then calculate the distance between the points and the time that you observed me taking to travel that distance, and you come up with a velocity. But, since I existed outside of time, I could have traveled an infinite distance to infinite points in existence between the points where you observed me beginning and ending, because I would have made the entire trip and been at my destination while you were still observing me at my start point. How could you possibly know what happened? | |
| Jul 15, 2014 at 16:06 | comment | added | Derek Roberts | But once time ceased to exist for me, in my rocket, you are no longer able to measure, me or my rocket, because we no longer exist in your time. You can only measure my exhaust, because my exhaust is left behind, in your time. But me and my rocket, we don't exist in your reality anymore. | |
| Jul 15, 2014 at 15:59 | comment | added | DarioP | The time would just cease to exist only for you into your rocket. But who cares of you? You are too fast, both I and the third person measure the same speed and that's enough for us. (You can also "measure" single photons, especially at high energy) | |
| Jul 15, 2014 at 15:50 | comment | added | Derek Roberts | If my rocket were made of photons, when it was caused to exist, you and me and the person chasing me would all become frozen in time, and the photon rocket would run the course of it's purpose, and then it would cease to exist, and then time would continue after the photon was gone, and all you would see is visible light rippling through time behind the photon rocket, so how would you measure the photon rocket? You're only measuring visible light, not photons. | |
| Jul 15, 2014 at 15:42 | history | edited | DarioP | CC BY-SA 3.0 |
added 1 character in body
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| Jul 15, 2014 at 15:35 | history | answered | DarioP | CC BY-SA 3.0 |