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Anonymous Tue Jul 26 04:52:36 2011 No.3452721 [Reply] [Original]

Hi, /sci/, I have a serious physics question for you. WHY does FTL imply time travel? I never understood that.
pic semirelated.

>>	Anonymous Tue Jul 26 04:55:36 2011 No.3452733 Go read Einstein's paper. No short answer will do it enough justice.

>>	Anonymous Tue Jul 26 04:55:36 2011 No.3452738 >>3452721 Because moving in space implies moving in time. That's why Einstein described the universe as being composed of "space time." >>3452733 short enough for you?

>>	Anonymous Tue Jul 26 04:55:36 2011 No.3452739 >>3452733 Can you give me a link to a proper english variant of it?

>>	Anonymous Tue Jul 26 04:56:36 2011 No.3452743 > Lorentz transformations. because special relativity.

>>	Anonymous Tue Jul 26 04:58:36 2011 No.3452751 >>3452738 Erm, I think that it's not it. >>3452743 Could you explain it in more details and not just spewing out names?

>>	Anonymous Tue Jul 26 04:58:36 2011 No.3452752 >>3452739 go to your library tomorrow >in b4 OMGWTFBOOKS?! Seriously, they ought to have something on it that einstein wrote himself. he wrote a bunch of books, donchaknow?

>>	Anonymous Tue Jul 26 04:59:36 2011 No.3452756 >>3452752 Eh well, I'll check for it when I go outside next time.

Anonymous Tue Jul 26 10:21:36 2011 No.3453770

I remember reading about this one test. There were 2 extremely precise clocks that were COMPLETELY synched up. They put one of them in a jet and it went for a cruise. When the plane landed, the clock in the jet was behind the clock that stayed outside.

Time moves slower the faster you go. Although, I wouldn't argue that you could go backwards through time with it. Just slow it down.

Which is also why if we ever did get FTL travel down, we could actually live long enough to make it to the nearest star. But only because that 100 light years would not feel like 100 years to the people inside the ship. However... all of your loved ones will be long dead, and in all honesty, earth will probably be gone. You would be like one way colonists.

>>	Anonymous Tue Jul 26 10:23:36 2011 No.3453780 >>3452752 right, so which fucking book? or should i just read every book ever written by einstein?

>>	Anonymous Tue Jul 26 10:24:36 2011 No.3453783 http://en.wikipedia.org/wiki/Minkowski_diagram#The_speed_of_light_as_a_limit

>>	Anonymous Tue Jul 26 10:26:36 2011 No.3453793 >>3453780 >right, so which fucking book? http://www.amazon.com/Relativity-Special-General-Albert-Einstein/dp/0517884410

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