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Janus
#16
Mar25-05, 05:35 PM
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Quote Quote by Dropout
From the colony's ship point of view during that 1 year. Colony Ship B gets on the radio and transmits across space to Colony Ship A, "Hey thats amazing, our scientists were correct about time dialation, your clock is running slow Colony ship A, since you accelerated towards us and are now traveling at 99.99999999999999% the speed of light."

PLanet C listens to Colony Ship B's transmission and starts to think, "WTF are they talking about? Colony Ship B is suppose to experience time dialation." A great debate begins on Planet C about the validity of their theories on time dialation after listening to that broadcast.
Only if the inhabitants of planet C had no understanding of Relativity. If they understood Relativity and what it predicts, they would have no problem with this at all.



















From the colony's ship point of view during that 1 year. Colony Ship B gets on the radio and transmits across space to Colony Ship A, "What is going on Colony ship A? We are reading you accelerated towards us at 99.99999999999999% the speed of light, you should be experiencing time dialation, but we are actually the ones experiencing time dialation. We must already be traveling at 99.99999999999999% the speed of light and you actually slowed down to the universal speed of stop. We will build a telescope to see if we are passing any galaxies up, oh look we just passed a planet C."

PLanet C listens to Colony Ship B's transmission and starts to think, "Yeah thats right, our scientists were right about relativity."
Again, this would happen only if all the participants did not understand Relativity. For one, in SR there is no such thing as a "universal speed of stop", or absolute frame of rest. If these "scientist's" version of Relativity includes such a frame, then it is not SR.















I used three numbers for mathematical simplicity.

A) They are 1 lightyear apart from their point of view, so if they travelled at the speed of light it would take 1 year to get there.

B) Acceleration is nearly isntant, for simplicity purposes I wouldnt have to get anal about exactly how much time passes during acceleration. Make it 0 to light speed in 1 minute, yeah it would make mush of their bodies but its not theoretically impossible.

C) Top speed is 99.9999999999999999999999999999999999999999999% the speed of light after acceleration, again its not theoretically impossible for matter to travel that fast.

So one or the other will age 1 year. Its either one or the other that experiences time dialation. It doesnt really matter what happens enroute, simultaneuty doesnt matter, what matters is after they meet up and determine who experienced time dialation. Once those ships broadcast over the universe a radio wave about what they said, then its written in stone what exactly happened otherwise 2 universes are created each one with different radio waves transmitted across the universe.
You just can't disregard simultaneity, nor the observations of the participants during the trip like that, as they are integral to understanding Relativity. And Relativity says: That while all the participants will agree to what the respective clocks on ship A and B will read when they meet, They will not agree on how they got that way.