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Time Travel, is it possible?

watch these videos and tell me time travel is impossible!!! and guess what, lasers are involved!!!

[media]http://youtube.com/watch?v=X02WMNoHSm8[/media]

[media]http://youtube.com/watch?v=oRWwI61so5Q&feature=related[/media]
 





I like Michio. If more physicists had his personality and ability to communicate in layman's terms I think more people would be involved in physics. I don't know if he is still there but he was at the City University of New York.

Way back in the day I had a physics professor who was involved in theoretical particle physics and spent anytime he wasn't at the University at CERN in Switzerland. The guy so wrapped up in physics that he had absolutely no personality and could barely dress himself. What was worse is his wife was also a theoretical physicist. I can just imagine conversation over dinner.
 
Is there somewhere that I can read about that laser vortex? Cause right now, I don't see how just a bunch of lasers making a nice pattern creates time travel :-[

Also, how does time travel work in the sense that if you move close to the speed of light, you will age slowly while earthlings age quickly? Would you just leave in your shuttle and then reappear in a couple of seconds? on earth and in your pod, only a couple of seconds have passed? I wold like to think this is correct, but obviously I am taking something the wrong way :-/
 
I believe the physicist has a book out on the subject. Check Google as I have no clue what it would be called. He's not the most popular physicist in the physics world due to many of his time travel ideas.
 
"Physics of the Impossible" is the name of the book. I think I'll do some reading on quantum theory before checking that book out, though. It said you have to have a good understanding of quantum theory and general relativity.
 
Yeah time travel is a piece of cake...


Just bust out a telescope one a clear night and *bam* you are way in the past...

(ok not really, but in a way it definately applies)

However the theory that one could travel back in time would not coincide with many accepted threories on the way that our universe acts.

The way I picture the universe in an enormous explosion, in which the fragments of the blasts clumped together to form everything that we can, this explosion is expanding...as time goes on its size is larger...

In order to go back into the past or future, you would have to somehow shrink or expand this universe to achieve this...IMHO way beyond the capabilitites of our species atleast at thsi point in time.

However going by a sort of "wormhole" theory it may ba possible to go back in time, however in another dimension, that has still not come to our point of expansion (time)


Well thats my 0.02 of rambling...


brtaman
 
Abray said:
Is there somewhere that I can read about that laser vortex? Cause right now, I don't see how just a bunch of lasers making a nice pattern creates time travel  :-[

Also, how does time travel work in the sense that if you move close to the speed of light, you will age slowly while earthlings age quickly? Would you just leave in your shuttle and then reappear in a couple of seconds? on earth and in your pod, only a couple of seconds have passed? I wold like to think this is correct, but obviously I am taking something the wrong way  :-/
Click to expand...

Well you would leave in your shuttle, and travel nearly the speed of light, but due to time dilation time for you slows down, so 4 hours to you might be 100 years to the people on the ground therfore when you arrive back at what you think is 4 hours later is actually 100 years later.

Diachi
 
Here's the thing that will twist your melon: Time slows down for you relative to everyone else. In your spacecraft your clock is ticking away second by second as if nothing were different.
 
FrothyChimp said:
Here's the thing that will twist your melon: Time slows down for you relative to everyone else. In your spacecraft your clock is ticking away second by second as if nothing were different.
Click to expand...


Please leave my melon out of this...
 
FrothyChimp said:
Here's the thing that will twist your melon: Time slows down for you relative to everyone else. In your spacecraft your clock is ticking away second by second as if nothing were different.
Click to expand...

so things dont just go faster, only YOU/ ME perceive the time differences?
 
Yeah, this is true from an inertial point of view IIRC (been a while since i've done any reading into special/general relativity), it is different when gravitational time dilation occurs..

Please someone more into these aspects of physics correct me if I am wrong

Thanks
brtaman
 
Well gravitation time dilation is caused when gravity bends time, because it can bend everything, light and time included. thats my understanding of it anyway, probably wrong.

Diachi
 
Yeah I agree with you diachi, the bending of time, space and light, as is visualized by our species as a grid that gets bent (distorted), to make funnel shaped indents...(lol veeery scientific), does in fact (or should by our theories), bend time, one of the many things preventing us from getting a glimpse of whats beyond those black holes...singularity, new dimensions...???????

But the thing is that this physics is so far out here, almost no theories can be conclusively proved or disproved, so a bit of to each his own :) Thats why I like it, should really start reading into a bit more again, makes for great reading if physics is your thing

brtaman
 
I love physics, it makes me think a lot, thats why I want to do a degree in physics or laser physics, or both. I am interested in how everything works, from the universe, to the CD player, to the keyboard I am typing on now, I always want to know how things work, and find a reason for things. I am also quite big headed, I love proving people wrong, I dont mind being wrong myself, I learn from my mistakes, but I constantly want more knowlege than everone around me.

Diachi
 
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