Time Travel Question

TT23,

Yes, in theory, time travel is possible.

But we have two daunting problems that have to be over come before we can move forward.

General Relativity is a theory of gravity. It is valid, has been proven to be true at every turn of events...but it can't in its present form be combined successfully with quantum mechanics.

Quantum mechanics is a theory of probability in physical events at the tiniest scales. It is valid, has been proven to be true at every turn of events...but it cannot explain gravity and cannot be combined with General Relativity in its present form. If you add gravity into quantum mechanics the formulas (and the universe) "blow up."

If we are to understand the true nature of time and how the universe "really" works we have to develop a new theory of relativity that combines GTR and QM. From that new theory GTR and QM should "pop" out of the solution just like Newtonian Mechanics "pops' out of GTR as a limiting case.

Once we do that we will have a concise answer to the time travel question.

That will probably be the (relatively) easy part of the problem. Having a valid theory of time travel that is firmly based on the theoretical physics that evolves won't get us into the past. The real problem will then fall to the future Rainman's sector...engineering.

A host of very competent scientist-engineers will then have to look at the science, take the puzzle to the drawing boards and find a way to translate theory into practice. Whole new schools of engineering will have to be developed. It will be very expensive but there will be spin-off technologies that can assist with the funding. I'd love to be around to see the spin-off PC technology from that venture. /ttiforum/images/graemlins/smile.gif
 
Interesting that the theory of relativity is being questioned openly in some circles about how it is flawed and recent supernovae observed haved blown the relativity bubble apart. Still, if some scientists wish to continue working in the dark ages, who am I to stop them? They don't bother me, I just go merrily on my way, doing my own thing, not getting my funding, <thinks> d'oh!
 
id have to say based on Einstiens theory time travel in the past is not possible because V=D/T you travel at the speed of light time slows for you so it takes 5 seconds to tie your shoe, traveling at the speed of light it would be like 500 years or so in everyone elses time. Velocity is the only thing that is constant. Distance and time changes so the above theory to test 20mph= 20 miles/one hour is also = 20mph= 40 miles/30 minutes the velosity stayed the same but time and distance changed. so if you could go like -186,000 MPS you possibly could go back in time, but it is not possible to go negative 186,000 MPS. if you say go in reverse you are still going 186,000 MPS just backwards
 
id have to say based on Einstiens theory time travel in the past is not possible because V=D/T you travel at the speed of light time slows for you so it takes 5 seconds to tie your shoe, traveling at the speed of light it would be like 500 years or so in everyone elses time. Velocity is the only thing that is constant. Distance and time changes so the above theory to test 20mph= 20 miles/one hour is also = 20mph= 40 miles/30 minutes the velosity stayed the same but time and distance changed. so if you could go like -186,000 MPS you possibly could go back in time, but it is not possible to go negative 186,000 MPS. if you say go in reverse you are still going 186,000 MPS just backwards
 
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