anyone here building a time machine?

IIRC, you can use some very complex maths (sorry for the pun) to show that relativistic effects preclude time travel through the use of anything except possibly wormholes (you'd have to move faster than the speed of light, but then your travel backwards in time would actually just be travel forwards in time, but with opposite direction). Oh, and those linked particles that transfer their quantum states instantly... which are only time travel by relativistic definitions (ie, transferring data at faster than light speeds).
 
wilko49 said:
IIRC, you can use some very complex maths (sorry for the pun) to show that relativistic effects preclude time travel through the use of anything except possibly wormholes (you'd have to move faster than the speed of light, but then your travel backwards in time would actually just be travel forwards in time, but with opposite direction). Oh, and those linked particles that transfer their quantum states instantly... which are only time travel by relativistic definitions (ie, transferring data at faster than light speeds).
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Problem with wormholes is feedback of course, which would only increase as you increased the size of them to something you could realistically travel through.
 
well, i'm positive that time travel is impossible (except for relativistic effects) but this paper is pretty rubbish - they are just connecting 2 unconnected things, its nonsense.
 
wilko49 said:
IIRC, you can use some very complex maths (sorry for the pun) to show that relativistic effects preclude time travel through the use of anything except possibly wormholes (you'd have to move faster than the speed of light, but then your travel backwards in time would actually just be travel forwards in time, but with opposite direction). Oh, and those linked particles that transfer their quantum states instantly... which are only time travel by relativistic definitions (ie, transferring data at faster than light speeds).
Click to expand...

Of more concern:

Imagine you are sitting in your time traveling machine on planet earth and you go back in time 100 years. The earth rotating about the sun, and the sun rotating about the galaxy, and the universe expanding etc etc. The earth isn't in the same point in space anymore!

So when you travel in time, you also have to travel in space exactly according to a fixed point of reference. If you are off by a tiny, tiny amount, your flotsam in space.
 
I work with physicists. We're quite regularly talking about how to build a time machine :D

BunnyKillBot said:
Of more concern:

Imagine you are sitting in your time traveling machine on planet earth and you go back in time 100 years. The earth rotating about the sun, and the sun rotating about the galaxy, and the universe expanding etc etc. The earth isn't in the same point in space anymore!

So when you travel in time, you also have to travel in space exactly according to a fixed point of reference. If you are off by a tiny, tiny amount, your flotsam in space.
Click to expand...
Interesting, not considered that one :eek:
 
John Titor would disagree with these scientists.

Edit: It's bad that I can forget names of people I have met, but can remember the name John Titor.
Curse you internet, curse you.
 
Anyway, we have done some time travel at work. Kind of. We sync'd up two atomic clocks, we knew what the difference in time would be between the two after x amount of time. One sat here in the lab while the other one was flown round the world. Then the times were compared and the one that had been flying showed a different time to what was predicted. Time flies when you're measuring relativity ;)
 
Monserrat said:
Yes I have a time machine. I travelled back in time from 2037 so that I could post on OcUK. I can inform you computer enthusiasts that the average computer in 2037 will have a clock speed of 72GHz with a minimum of 48 cores. The average RAM is a terabyte while the average hard disk is an exabyte. Monitors are so thin that you can roll it up like parchment.
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I dreamed a dream.
 
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