| Thursday Thrashing | |
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| Topic Started: Jan 26 2017, 12:18 PM (448 Views) | |
| ragnarokio | Jan 27 2017, 01:41 AM Post #21 |
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Postmaster General
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how do we think we can? i slept for 13 hours and rubik messaged me a lot while i was asleep
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| Rubik | Jan 27 2017, 01:50 AM Post #22 |
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Apprentice
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I'm in class |
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| yeti | Jan 27 2017, 03:41 AM Post #23 |
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Master
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such that it passes at a similar rate and in a similar direction for everyone on the planet simultaneously also dat Rubik |
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| pantsukun | Jan 27 2017, 04:17 AM Post #24 |
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Postmaster General
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i am awake again dang those epic messages |
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| yeti | Jan 27 2017, 04:26 AM Post #25 |
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Master
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good morning Pantsu! |
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| pantsukun | Jan 27 2017, 04:29 AM Post #26 |
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Postmaster General
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good mornight 2017
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| ragnarokio | Jan 27 2017, 09:28 AM Post #27 |
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Postmaster General
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depending on what you consider as time, it does, for the most part. If you take any two people and give them a machine that buzzes after 10 hours, and then tell them to press a button once the clock finishes counting down, they'll probably consistently press it around the same time even though they are seperated geographically, because the machine keeps track of time. |
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| pantsukun | Jan 27 2017, 09:47 AM Post #28 |
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Postmaster General
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and there's the stuff w/the passing of time depending on the observer or w/e thing and if one person travelled near the speed of light they would only age a day while the other person aged 69 years or w/e that whole thing is about |
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| ragnarokio | Jan 27 2017, 10:45 AM Post #29 |
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Postmaster General
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i think that involves relativity physics, which I don't know too much about. I think the gist of it is that if you take two identical very sturdy clocks, and accelerate one to nearly the speed of light, then it will tick much more slowly than the stationary clock, such that by the time the stationary clock has had its hand move a million times, the moving clock's hand may have only moved once. An identical clock will also move at different speeds in different parts of the world, but the part relativity has to play in that is probably negligible. Things like temperature are probably bigger factors, and it could be that one machine designed to buzz after 10 hours, when set up in two different places, will end up buzzing at noticeably different times. Time on earth is centralized though. We have one "clock" which is rigorously maintained, and then communicate to other parts of the world the time on that clock, so that any discrepancies that occur in how much time has passed due to temperature or relativity or anything else can be fixed by adjusting to the time the "central clock" says it is. |
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| ragnarokio | Jan 27 2017, 10:52 AM Post #30 |
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Postmaster General
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they tried to create a definition for "one second" that would remain the same no matter in which context it was measured, and the definition they came up with was "The duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom." I don't know exactly what this means, but it has something to do with the radiation mechanics of atoms. Presumably they generate some sort of wave which can be measured, and which has a period which remains constant. They found out before too long though that the period didn't actually remain constant because of relativity. They eventually changed it to only refer to cesium atoms that have no velocity and a temperature of absolute zero. Under these conditions, the period presumably remains the same. |
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