The answer to time travel?

[Tiesto]

Forgive me if you think i'm crazy, i think i may have cracked Time Travel subject to a few theories which could well be wrong.

If it were possible for Nasa to put a spaceship into orbit and accelerate constantly, would this ship eventually not speed up to the point where it would be travelling faster than the speed of light hence travelling back through time, and if the ship could then land before it actually took off???? 

 

[Andrew_2004]

but on a serious note, if you were to tie a person / space craft to a piece of rope and start rotaing it about a point at a constant speed, as you increased the length of rope the velocity (angular velocity) at which the person is travelling would increase , therefore, if you had an infintite length of rope you would, and you constantly increased its length you would get to a point where the person will be travelling at an angular velocity exceeding the speed of light.

 

Well the theory is sound :o)

[Andrew_2004]

why did that post three times ! i must have time travelled 3 times and written in again and again! lol :o)

[Diablod666]

wow my little 14 year old brain hurts... but i think i sort of understand it... a bit :S

Firstly, Bernard said he knows someone that has travelled a year back or forwards in time. This is bu*l. hope i dont get penalised for that. Noone can travel that far forward/back in time. even i know that.

wow... so let me get this straight... The faster someone/thing is travelling, the slower time gets. Or is it the slower time SEEMS to get? And if a person had a watch on synchronised with a watch that was stationary, and s/he travelled as fast as possible for a long long time, then when s/he got back, the watch that had moved would be... 100th of a second or so behind the watch that was stationary. yeah? could someone plz explain the reason how this happens in a slightly more easily digestible way? and could someone please repeat the formulae used to show this?

Thanks

[bernardo]

Hello Diablod666 - don't worry - that was just a little joke about someone I know who had his birthday on Friday (he was 21 on Thursday and 22 on Friday).  So he was a whole year further into the future on Friday compared with Thursday.

[magicdice]

Andrew_2004 you are wrong, sorry, the person on the string wouldn't exceed the speed of light, they'd get heavier & squished

[Dagman]

This is the answer; Timetravel is not possible as people from the future would be coming back to present day! Speaks for itself!

[Fat Boy]

dagman - that only suggests you can't go backwards thru time.  doesn't prove someone won't work out how to go forward in time

[magicdice]

dagman if you could travel through time would you really go into the past?

really

think about this carefully. you can go forward, return & place some huge bet & get rich as anything, you can investigate unknown things - or you can go & live in history

yeah

[professor68]

time travel is not possible.  period.  time plods along everywhere at the same, um... time.  where is the physical proof that the faster you travel the more mass you have?  from where does this "extra" mass come?  and why light waves?  why not gamma waves, or micro waves, or even ocean waves? 

[helghast]

it is NOT possible to travel backwards in time for Gods sake!!!!!!!!!!!!!!

Even if it was why would anyone want to come back to the year 2004 it is so crap.

The faster you go, the slower time seems to go for YOU. The guy on the space station went a fraction of a second forward in time and is therefore a fraction of a second younger than he should be at that paticular time.

[Dagman]

Well magicdice I see your point but, going forwards is a huge risk in that you may appear in a hostile future so would people do it?, and you answered your own question would people go into the past with 'go and live in history! You could choose a fantastic lifetime by checking history data and go to an era you wish, perhaps where there's no wars, disease etc.  If it was possible be assured that greed in human nature would see people travelling to all times to exploit regardless of risk to their own future existence. I'll believe it when I see it but I don't think I will somehow!  Scientists would be clambering over each other to work on the concept but they're not cos they know it's not possible!

[Zen82]

Time travel can't be possible or else someone from the future would have been back here and we would have the technology.  The possibility, if true, tells us that the world will end before the discovery is made, so drink up and think that over.