Talk:Twin paradox/Archive 10

message: [Section removed as not relevant to the talk page.]KrytenKoro 21:05, 8 August 2007 (UTC)
thread_title:  Never ending story 

message: [Section removed as not relevant to the talk page.  Sorry Gscshoyru—you probably weren't aware that the comment you replied to had been removed repeatedly as utterly irrelevant soapboxing by a repeated problem user.  I only removed your reply because it wouldn't have made any sense without the original.] — SCZenz 12:17, 8 August 2007 (UTC)
replies: text: I know... I've been watching the debate... I was attempting to reason with him, even though the past history of this makes it seem unlikely... Gscshoyru 12:20, 8 August 2007 (UTC)
replies: text:   More irrlevancy was removed.  --EMS | Talk 19:03, 8 August 2007 (UTC)
thread_title:  One Year is One Year for Everybody in the Universe 

message: I know, there is no time travel in the sense of science fiction. But what does "travel" mean? Time is passed. The amount of time passed is measured by counting the ticks of a clock. That implies: there is an observer and there is a clock and a counter. Newtons physics are based on the preassumption, that time is universal, that is, two independent systems of observer, clock and counter count the same amount of ticks between two comperations of the counters, whatever they do in between. Experience (measuring velocity of light) showed this preassumption can not be true and lead to the SRT. From the invariance of speed of light follows, that time passes as a function of the velocity profile of the systems. Therefore, when comparing the counters -to do this, both systems have to be in one place at relative rest), they can have different values. That should be the basis of any conversation. If we do not agree on this, we should use the right words, without changing the sense. Only than it makes sense to go on and decide, if it is possible to compare the counters without being in on place or at relative rest. Otherwise, I better drill a hole in my knee and plant a flower! ErNa 11:09, 17 August 2007 (UTC)
replies: text: Einstein specified a synchronization procedure for this:  A light beam gets sent out by an inertial obsrver and (at?) time t1, gets reflected at some event and returns to the emitter at time t2.  The observer who emitted the light and recieved the reflections can infer that the event of the reflection occurred as time (t1 + t2)/2 in his temporal coordinate system.  That is how a clock gets extended in SR.  --EMS | Talk 16:12, 17 August 2007 (UTC)

text: ErNa - you should be able to figure that out yourself.  Besides, this has nothing to do with the article itself. --EMS | Talk 20:56, 17 August 2007 (UTC)

text: (t2 - t1)/2 half of the *difference* between the times of the events.  The reflection occurs at half of the difference after t1.  So the reflelction occurs at time t1 + t2/2 - t1/2 = (t1+ t2)/2.  I also would point out that if stuff like this confuses you then you are in poor shape to take on relativity theory.  Kindly make your point and stop beating around the bushes.  In case you have not noticed, I am losing my patience with this stuff. --EMS | Talk 23:27, 19 August 2007 (UTC)
thread_title:  Edit shortcut