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Originally Posted by ZrByte
That doesnt work. Time is relative so the person caught in the slower passage of time will see everything else running faster. i.e. the person in the rocket will see the people on Earth moving quicker than they infact are (This includes clocks  ) It is only the person on Earth that will see the clock on the rocket running slowly (Not Both) as I said they worded that paragraph incorectly. The episode of Red Dwarf season 4 episode 4 'White Hole' is a good example of this (I can provide a link to the small segment of the show if anybody is interested). |
I know it doesn't work, that's the point - it's a paradox. As the 2nd link says, the problem states that using special relativity, *both* people will observe the other person's clock to be running slowly.
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Originally Posted by http://www.phys.unsw.edu.au/~jw/twin.html
The twin paradox was raised in an attempt to use symmetry and time dilation to show that Special Relativity was inconsistent. Here is the paradox: Jane travels in a straight line at a relativistic speed v to some distant location. She then decelerates and returns. Her twin brother Joe stays at home on Earth. The situation is shown in the diagram, which is not to scale.
Joe observes that Jane's on-board clocks (including her biological one), which run at Jane's proper time, run slowly on both outbound and return leg. He therefore concludes that she will be younger than he will be when she returns. On the outward leg Jane observes Joe's clock to run slowly, and she observes that it ticks slowly on the return run. So will Jane conclude that Joe will have aged less? And if she does, who is correct? According to the proponents of the paradox, there is a symmetry between the two observers, so, using relativity, each will predict that the other is younger. This cannot be simultaneously true for both so, if the argument is correct, relativity is wrong.
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The article in the link then goes on to say how it is solved. End result: yes, only Jane's clock is running slowly, as time is slower for her due to time dilation (but, the initial paradox does say both run slowly - hence why it's a paradox).
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Originally Posted by ZrByte
as mentioned in this snipet from your second link... unless im missing something  |
Yeah, that bit is another solution for the paradox - it takes into account General Relativity (gravity), instead of only Special Relativity, & shows that only Jane's clock will be running slowly.
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Originally Posted by ZrByte
Though before I will bother explaining this sister theory I have a question...
How do we calculate the distance between sol and its neighbours?
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A quick Google came up with....parallax
http://www.wonderquest.com/parallax.htm
http://www.physlink.com/Education/AskExperts/ae71.cfm
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Originally Posted by ZrByte
Shouldnt that be the other way around?
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Sorry, I didn't word that very well. General relativity says that clocks run slower in high gravity (& so faster in lower gravity). This has actually been shown....e.g. The clocks in GPS satellites have a slight speed-up due to being in lower gravity, & GPS devices have to take this into account. Although there are other, competing, factors, so this is not always true.
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Originally Posted by loz-enge
For the sake of this please dont worry about paradoxes, time dilation or any adverse effects from killing your grandfathers etc.
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LOL, sorry. Back On Topic....
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Originally Posted by loz-enge
What if you were to go back in time, what time would you go back to & what would you take with you?
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I'd like to go back to Ancient Greece or Egypt. Also be interesting to see the time of the Incas, Aztecs, Maya, etc in South/Central America.