Time Travel - should we? - Page 3

23-05-2005, 18:19

Time travel is undoubtedly impossible!

However what is possible is that you can slow down time relative to you, according to Einstein anyway, and the theory of relativity. (I think)

According to Einstein's theories then anyone who is moving is actually in their own mini time warp - the time relative to them is actually slowed down, but at the speeds with which we are fimiliar the difference is negligible. When it does get noticed is at the speed of light where time slows down to such a level that if you took a ten year trip at the speed of light then returned to Earth, you will find that in Earth time you have been away for hundreds of years.

Or something like that anyway...

TheBlueRaja · 23-05-2005, 18:28

Quote:

Originally Posted by Raistlin

Not last week, sorry.

If it helps at all, you do manage to get me to raise my right hand next week.

Do i? Damn - i must have forgot again.
__________________

Quote:

Originally Posted by Diamond

Time travel is undoubtedly impossible!

However what is possible is that you can slow down time relative to you, according to Einstein anyway, and the theory of relativity. (I think)

According to Einstein's theories then anyone who is moving is actually in their own mini time warp - the time relative to them is actually slowed down, but at the speeds with which we are fimiliar the difference is negligible. When it does get noticed is at the speed of light where light slows down to such a level that if you took a ten year trip at the speed of light then returned to Earth, you will find that in Earth time you have been away for hundreds of years.

Or something like that anyway...

Time is relative to the person who is observing it - one theory is the grandfather clock theory in which a person standing next to a huge grandfather clock travels for one second at the speed of light away from the clock at precicely 12:00:00 he then is able to turn and observe the clock at the same time as he stops and it still shows 12:00:00 despite the fact he has been travelling for a second.

Also the closer you get to the speed of light the slower time becomes, this has actually been proven by using two atomic clocks, one on the ground and one on a plane. The one on the ground stays relative to the earths surface whilst the plane flies off for a while, when it returns there is a difference in the times displayed because the plane has been travelling closer to the speed of light than the clock on the ground.

**Damien** · 23-05-2005, 18:42

Technically, If yo go really really fast to america you can actually go back in time a few hours!

MetaWraith · 23-05-2005, 18:49

Quote:

Originally Posted by Diamond

Time travel is undoubtedly impossible!

However what is possible is that you can slow down time relative to you, according to Einstein anyway, and the theory of relativity. (I think)

According to Einstein's theories then anyone who is moving is actually in their own mini time warp - the time relative to them is actually slowed down, but at the speeds with which we are fimiliar the difference is negligible. When it does get noticed is at the speed of light where time slows down to such a level that if you took a ten year trip at the speed of light then returned to Earth, you will find that in Earth time you have been away for hundreds of years.

Or something like that anyway...

Not only that, objects moving at relatavistic speeds appear smaller, it's called the Lorentz Contraction.

AndrewJ · 23-05-2005, 18:54

They said flying was impossible.

They said going to the moon was impossible

People believed this, until it was done.

Raistlin · 23-05-2005, 19:07

Yeah, but there's no way they'd have worked out how to get that shuttle off the ground if I hadn't gone back and................

TheBlueRaja · 23-05-2005, 19:07

Forgot all about it?

Halcyon · 23-05-2005, 19:53

More to the point, would you really want go back in time ?
Dial up Internet connections ????

Noooooooooooooo !!!

zoombini · 23-05-2005, 22:14

Maybe we could go forward in time to 1gb wireless connections with no contention & no bandwidth restrictions.
wahayyyy!

Halcyon · 23-05-2005, 23:06

If it were possible, I'd love to go and see what it was like for my parents to live like when they were kids and also see great moments in history.

iron25 · 23-05-2005, 23:23

Okay let me start by saying that I'm no scientist, not even sure I spelt it right

but let me say once and for all, time travel is impossible and that's the bottom line 'cos stone cold said so

Subject closed

This idea about one clock in space and one on the ground sounds good in theory but all it shows is that some other force affected the clock. The only time you could ever come close to thinking time travel is possible would be if you were to fall into a coma and then wake up 5/10/20 years later. To you it would seem like a second but whilst you're asleep, the world has aged by 5/10/20 years instead of you jumping into the future. It's very similar when you're in a deep sleep, you fall asleep and the next time you wake up 12 hours have passed, you haven't travelled into the future, you've just been lying around whilst the earth rotates and ages by 12 hours.

Anyone know where I can get my hands on some plutonium because I've already seen a Delorean for sale

Halcyon · 24-05-2005, 00:08

There is also the problem that say you got hold of a time machine and went back in time, would you go back to what you were doing at that point in time if you were alive then, or become a new person there.
Plus what would happen to the time machine ? Would it stay with you ?
Becuase lets say I bought one tommorow and then went back to 1981, I would not own it and would therfore be stuck in that year.
Scary.

Raistlin · 24-05-2005, 00:18

Quote:

Originally Posted by Halcyon

There is also the problem that say you got hold of a time machine and went back in time, would you go back to what you were doing at that point in time if you were alive then, or become a new person there.
Plus what would happen to the time machine ? Would it stay with you ?
Becuase lets say I bought one tommorow and then went back to 1981, I would not own it and would therfore be stuck in that year.
Scary.

The version of you that was already in that time wouldn't own one, however you (as in the version of you that travelled back in time) would own one. It would go back with you, it would stay with you.

kronas · 24-05-2005, 00:59

time travel is not possible.....if it was then there would be people coming back and warning us of future catastrophic events or even change the course of history and effect civilisation on a dramatic scale.

iron25 · 24-05-2005, 01:04

Quote:

Originally Posted by Raistlin

The version of you that was already in that time wouldn't own one, however you (as in the version of you that travelled back in time) would own one. It would go back with you, it would stay with you.

We are made up of atoms so do you think it is possible for the same two atoms to co-exist in the same dimension

Where's Stephen Hawkin when you need him

__________________

Quote:

Originally Posted by kronas

time travel is not possible.....if it was then there would be people coming back and warning us of future catastrophic events or even change the course of history and effect civilisation on a dramatic scale.

Who's to say that Hitler did not travel back from the future to start the first world war so that the world could be ruled by the Nazi's

We could go on forever

So can you smell what the rock's cooking, time travel is impossible